diff options
61 files changed, 1155 insertions, 121 deletions
diff --git a/src/compiler/scala/tools/nsc/CompileServer.scala b/src/compiler/scala/tools/nsc/CompileServer.scala index c23c1e6154..7a0a072bb8 100644 --- a/src/compiler/scala/tools/nsc/CompileServer.scala +++ b/src/compiler/scala/tools/nsc/CompileServer.scala @@ -92,10 +92,11 @@ class StandardCompileServer extends SocketServer { val args = input.split("\0", -1).toList val newSettings = new FscSettings(fscError) - this.verbose = newSettings.verbose.value val command = newOfflineCompilerCommand(args, newSettings) + this.verbose = newSettings.verbose.value info("Settings after normalizing paths: " + newSettings) + if (!command.files.isEmpty) info("Input files after normalizing paths: " + (command.files mkString ",")) printMemoryStats() // Update the idle timeout if given @@ -173,11 +174,22 @@ object CompileServer extends StandardCompileServer { /** A directory holding redirected output */ private lazy val redirectDir = (compileSocket.tmpDir / "output-redirects").createDirectory() - private def redirect(setter: PrintStream => Unit, filename: String) { - setter(new PrintStream((redirectDir / filename).createFile().bufferedOutput())) - } - - def main(args: Array[String]) { + private def createRedirect(filename: String) = + new PrintStream((redirectDir / filename).createFile().bufferedOutput()) + + def main(args: Array[String]) = + execute(() => (), args) + + /** + * Used for internal testing. The callback is called upon + * server start, notifying the caller that the server is + * ready to run. WARNING: the callback runs in the + * server's thread, blocking the server from doing any work + * until the callback is finished. Callbacks should be kept + * simple and clients should not try to interact with the + * server while the callback is processing. + */ + def execute(startupCallback : () => Unit, args: Array[String]) { val debug = args contains "-v" if (debug) { @@ -185,14 +197,16 @@ object CompileServer extends StandardCompileServer { echo("Redirect dir is " + redirectDir) } - redirect(System.setOut, "scala-compile-server-out.log") - redirect(System.setErr, "scala-compile-server-err.log") - System.err.println("...starting server on socket "+port+"...") - System.err.flush() - compileSocket setPort port - run() - - compileSocket deletePort port - sys exit 0 + Console.withErr(createRedirect("scala-compile-server-err.log")) { + Console.withOut(createRedirect("scala-compile-server-out.log")) { + Console.err.println("...starting server on socket "+port+"...") + Console.err.flush() + compileSocket setPort port + startupCallback() + run() + + compileSocket deletePort port + } + } } } diff --git a/src/compiler/scala/tools/nsc/interpreter/IMain.scala b/src/compiler/scala/tools/nsc/interpreter/IMain.scala index b46d28dec3..a55f0af116 100644 --- a/src/compiler/scala/tools/nsc/interpreter/IMain.scala +++ b/src/compiler/scala/tools/nsc/interpreter/IMain.scala @@ -386,6 +386,7 @@ class IMain(initialSettings: Settings, protected val out: JPrintWriter) extends oldReq <- definedNameMap get name.companionName newSym <- req.definedSymbols get name oldSym <- oldReq.definedSymbols get name.companionName + if Seq(oldSym, newSym).permutations exists { case Seq(s1, s2) => s1.isClass && s2.isModule } } { afterTyper(replwarn(s"warning: previously defined $oldSym is not a companion to $newSym.")) replwarn("Companions must be defined together; you may wish to use :paste mode for this.") @@ -970,7 +971,7 @@ class IMain(initialSettings: Settings, protected val out: JPrintWriter) extends // } lazy val definedSymbols = ( termNames.map(x => x -> applyToResultMember(x, x => x)) ++ - typeNames.map(x => x -> compilerTypeOf(x).typeSymbol) + typeNames.map(x => x -> compilerTypeOf(x).typeSymbolDirect) ).toMap[Name, Symbol] withDefaultValue NoSymbol lazy val typesOfDefinedTerms = mapFrom[Name, Name, Type](termNames)(x => applyToResultMember(x, _.tpe)) diff --git a/src/compiler/scala/tools/nsc/transform/CleanUp.scala b/src/compiler/scala/tools/nsc/transform/CleanUp.scala index 0c9cb31d58..44510ab0c2 100644 --- a/src/compiler/scala/tools/nsc/transform/CleanUp.scala +++ b/src/compiler/scala/tools/nsc/transform/CleanUp.scala @@ -15,6 +15,7 @@ abstract class CleanUp extends Transform with ast.TreeDSL { import global._ import definitions._ import CODE._ + import treeInfo.StripCast /** the following two members override abstract members in Transform */ val phaseName: String = "cleanup" @@ -206,12 +207,17 @@ abstract class CleanUp extends Transform with ast.TreeDSL { var reflPoly$Cache: SoftReference[scala.runtime.MethodCache] = new SoftReference(new EmptyMethodCache()) def reflMethod$Method(forReceiver: JClass[_]): JMethod = { - var method: JMethod = reflPoly$Cache.find(forReceiver) - if (method != null) + var methodCache: MethodCache = reflPoly$Cache.find(forReceiver) + if (methodCache eq null) { + methodCache = new EmptyMethodCache + reflPoly$Cache = new SoftReference(methodCache) + } + var method: JMethod = methodCache.find(forReceiver) + if (method ne null) return method else { method = ScalaRunTime.ensureAccessible(forReceiver.getMethod("xyz", reflParams$Cache)) - reflPoly$Cache = new SoftReference(reflPoly$Cache.get.add(forReceiver, method)) + reflPoly$Cache = new SoftReference(methodCache.add(forReceiver, method)) return method } } @@ -228,16 +234,22 @@ abstract class CleanUp extends Transform with ast.TreeDSL { def getPolyCache = gen.mkCast(fn(REF(reflPolyCacheSym), nme.get), MethodCacheClass.tpe) addStaticMethodToClass((reflMethodSym, forReceiverSym) => { + val methodCache = reflMethodSym.newVariable(mkTerm("methodCache"), ad.pos) setInfo MethodCacheClass.tpe val methodSym = reflMethodSym.newVariable(mkTerm("method"), ad.pos) setInfo MethodClass.tpe BLOCK( - IF (getPolyCache OBJ_EQ NULL) THEN (REF(reflPolyCacheSym) === mkNewPolyCache) ENDIF, - VAL(methodSym) === ((getPolyCache DOT methodCache_find)(REF(forReceiverSym))) , - IF (REF(methodSym) OBJ_!= NULL) . + VAR(methodCache) === getPolyCache, + IF (REF(methodCache) OBJ_EQ NULL) THEN BLOCK( + REF(methodCache) === NEW(TypeTree(EmptyMethodCacheClass.tpe)), + REF(reflPolyCacheSym) === gen.mkSoftRef(REF(methodCache)) + ) ENDIF, + + VAR(methodSym) === (REF(methodCache) DOT methodCache_find)(REF(forReceiverSym)), + IF (REF(methodSym) OBJ_NE NULL) . THEN (Return(REF(methodSym))) ELSE { def methodSymRHS = ((REF(forReceiverSym) DOT Class_getMethod)(LIT(method), REF(reflParamsCacheSym))) - def cacheRHS = ((getPolyCache DOT methodCache_add)(REF(forReceiverSym), REF(methodSym))) + def cacheRHS = ((REF(methodCache) DOT methodCache_add)(REF(forReceiverSym), REF(methodSym))) BLOCK( REF(methodSym) === (REF(ensureAccessibleMethod) APPLY (methodSymRHS)), REF(reflPolyCacheSym) === gen.mkSoftRef(cacheRHS), @@ -246,6 +258,7 @@ abstract class CleanUp extends Transform with ast.TreeDSL { } ) }) + } /* ### HANDLING METHODS NORMALLY COMPILED TO OPERATORS ### */ @@ -606,14 +619,16 @@ abstract class CleanUp extends Transform with ast.TreeDSL { } transformApply - // This transform replaces Array(Predef.wrapArray(Array(...)), <tag>) - // with just Array(...) - case Apply(appMeth, List(Apply(wrapRefArrayMeth, List(array)), _)) - if (wrapRefArrayMeth.symbol == Predef_wrapRefArray && - appMeth.symbol == ArrayModule_overloadedApply.suchThat { - _.tpe.resultType.dealias.typeSymbol == ObjectClass - }) => - super.transform(array) + // Replaces `Array(Predef.wrapArray(ArrayValue(...).$asInstanceOf[...]), <tag>)` + // with just `ArrayValue(...).$asInstanceOf[...]` + // + // See SI-6611; we must *only* do this for literal vararg arrays. + case Apply(appMeth, List(Apply(wrapRefArrayMeth, List(arg @ StripCast(ArrayValue(_, _)))), _)) + if wrapRefArrayMeth.symbol == Predef_wrapRefArray && appMeth.symbol == ArrayModule_genericApply => + super.transform(arg) + case Apply(appMeth, List(elem0, Apply(wrapArrayMeth, List(rest @ ArrayValue(elemtpt, _))))) + if wrapArrayMeth.symbol == Predef_wrapArray(elemtpt.tpe) && appMeth.symbol == ArrayModule_apply(elemtpt.tpe) => + super.transform(treeCopy.ArrayValue(rest, rest.elemtpt, elem0 :: rest.elems)) case _ => super.transform(tree) diff --git a/src/compiler/scala/tools/nsc/transform/Erasure.scala b/src/compiler/scala/tools/nsc/transform/Erasure.scala index 41aada473a..889d309ba9 100644 --- a/src/compiler/scala/tools/nsc/transform/Erasure.scala +++ b/src/compiler/scala/tools/nsc/transform/Erasure.scala @@ -1057,17 +1057,17 @@ abstract class Erasure extends AddInterfaces Apply(Select(qual, cmpOp), List(gen.mkAttributedQualifier(targ.tpe))) } case RefinedType(parents, decls) if (parents.length >= 2) => - // Optimization: don't generate isInstanceOf tests if the static type - // conforms, because it always succeeds. (Or at least it had better.) - // At this writing the pattern matcher generates some instance tests - // involving intersections where at least one parent is statically known true. - // That needs fixing, but filtering the parents here adds an additional - // level of robustness (in addition to the short term fix.) - val parentTests = parents filterNot (qual.tpe <:< _) - - if (parentTests.isEmpty) Literal(Constant(true)) - else gen.evalOnce(qual, currentOwner, unit) { q => - atPos(tree.pos) { + gen.evalOnce(qual, currentOwner, unit) { q => + // Optimization: don't generate isInstanceOf tests if the static type + // conforms, because it always succeeds. (Or at least it had better.) + // At this writing the pattern matcher generates some instance tests + // involving intersections where at least one parent is statically known true. + // That needs fixing, but filtering the parents here adds an additional + // level of robustness (in addition to the short term fix.) + val parentTests = parents filterNot (qual.tpe <:< _) + + if (parentTests.isEmpty) Literal(Constant(true)) + else atPos(tree.pos) { parentTests map mkIsInstanceOf(q) reduceRight gen.mkAnd } } diff --git a/src/compiler/scala/tools/nsc/transform/ExtensionMethods.scala b/src/compiler/scala/tools/nsc/transform/ExtensionMethods.scala index 79e51d5daa..39e16c3f58 100644 --- a/src/compiler/scala/tools/nsc/transform/ExtensionMethods.scala +++ b/src/compiler/scala/tools/nsc/transform/ExtensionMethods.scala @@ -64,14 +64,18 @@ abstract class ExtensionMethods extends Transform with TypingTransformers { } } - /** Return the extension method that corresponds to given instance method `meth`. - */ + private def companionModuleForce(sym: Symbol) = { + sym.andAlso(_.owner.initialize) // See SI-6976. `companionModule` only calls `rawInfo`. (Why?) + sym.companionModule + } + + /** Return the extension method that corresponds to given instance method `meth`. */ def extensionMethod(imeth: Symbol): Symbol = atPhase(currentRun.refchecksPhase) { - val companionInfo = imeth.owner.companionModule.info + val companionInfo = companionModuleForce(imeth.owner).info val candidates = extensionNames(imeth) map (companionInfo.decl(_)) filter (_.exists) val matching = candidates filter (alt => normalize(alt.tpe, imeth.owner) matches imeth.tpe) assert(matching.nonEmpty, - s"no extension method found for $imeth:${imeth.tpe} among ${candidates map (c => c.name+":"+c.tpe)} / ${extensionNames(imeth)}") + s"no extension method found for $imeth:${imeth.tpe} among ${candidates.map(c => c.name+":"+c.tpe).toList} / ${extensionNames(imeth).toList}") matching.head } diff --git a/src/compiler/scala/tools/nsc/transform/LambdaLift.scala b/src/compiler/scala/tools/nsc/transform/LambdaLift.scala index cd2bffcfde..952ca96f54 100644 --- a/src/compiler/scala/tools/nsc/transform/LambdaLift.scala +++ b/src/compiler/scala/tools/nsc/transform/LambdaLift.scala @@ -320,12 +320,24 @@ abstract class LambdaLift extends InfoTransform { private def memberRef(sym: Symbol) = { val clazz = sym.owner.enclClass //Console.println("memberRef from "+currentClass+" to "+sym+" in "+clazz) - val qual = if (clazz == currentClass) gen.mkAttributedThis(clazz) - else { - sym resetFlag(LOCAL | PRIVATE) - if (clazz.isStaticOwner) gen.mkAttributedQualifier(clazz.thisType) - else outerPath(outerValue, currentClass.outerClass, clazz) - } + def prematureSelfReference() { + val what = + if (clazz.isStaticOwner) clazz.fullLocationString + else s"the unconstructed `this` of ${clazz.fullLocationString}" + val msg = s"Implementation restriction: access of ${sym.fullLocationString} from ${currentClass.fullLocationString}, would require illegal premature access to $what" + currentUnit.error(curTree.pos, msg) + } + val qual = + if (clazz == currentClass) gen.mkAttributedThis(clazz) + else { + sym resetFlag (LOCAL | PRIVATE) + if (selfOrSuperCalls exists (_.owner == clazz)) { + prematureSelfReference() + EmptyTree + } + else if (clazz.isStaticOwner) gen.mkAttributedQualifier(clazz.thisType) + else outerPath(outerValue, currentClass.outerClass, clazz) + } Select(qual, sym) setType sym.tpe } @@ -496,13 +508,25 @@ abstract class LambdaLift extends InfoTransform { private def preTransform(tree: Tree) = super.transform(tree) setType lifted(tree.tpe) + /** The stack of constructor symbols in which a call to this() or to the super + * constructor is active. + */ + private val selfOrSuperCalls = mutable.Stack[Symbol]() + @inline private def inSelfOrSuperCall[A](sym: Symbol)(a: => A) = try { + selfOrSuperCalls push sym + a + } finally selfOrSuperCalls.pop() + override def transform(tree: Tree): Tree = tree match { case Select(ReferenceToBoxed(idt), elem) if elem == nme.elem => postTransform(preTransform(idt), isBoxedRef = false) case ReferenceToBoxed(idt) => postTransform(preTransform(idt), isBoxedRef = true) case _ => - postTransform(preTransform(tree)) + def transformTree = postTransform(preTransform(tree)) + if (treeInfo isSelfOrSuperConstrCall tree) + inSelfOrSuperCall(currentOwner)(transformTree) + else transformTree } /** Transform statements and add lifted definitions to them. */ diff --git a/src/compiler/scala/tools/nsc/transform/SpecializeTypes.scala b/src/compiler/scala/tools/nsc/transform/SpecializeTypes.scala index bbab545d9e..64051b56ec 100644 --- a/src/compiler/scala/tools/nsc/transform/SpecializeTypes.scala +++ b/src/compiler/scala/tools/nsc/transform/SpecializeTypes.scala @@ -1360,7 +1360,7 @@ abstract class SpecializeTypes extends InfoTransform with TypingTransformers { debuglog("obtained env: " + e) e.keySet == env.keySet } catch { - case _ => + case _: Throwable => debuglog("Could not unify.") false } diff --git a/src/compiler/scala/tools/nsc/typechecker/ContextErrors.scala b/src/compiler/scala/tools/nsc/typechecker/ContextErrors.scala index 4268398081..dc367b11fd 100644 --- a/src/compiler/scala/tools/nsc/typechecker/ContextErrors.scala +++ b/src/compiler/scala/tools/nsc/typechecker/ContextErrors.scala @@ -730,7 +730,7 @@ trait ContextErrors { } catch { // the code above tries various tricks to detect the relevant portion of the stack trace // if these tricks fail, just fall back to uninformative, but better than nothing, getMessage - case NonFatal(ex) => + case NonFatal(ex) => // currently giving a spurious warning, see SI-6994 macroLogVerbose("got an exception when processing a macro generated exception\n" + "offender = " + stackTraceString(realex) + "\n" + "error = " + stackTraceString(ex)) diff --git a/src/compiler/scala/tools/nsc/typechecker/PatternMatching.scala b/src/compiler/scala/tools/nsc/typechecker/PatternMatching.scala index f1c70f46d8..69bbab6e42 100644 --- a/src/compiler/scala/tools/nsc/typechecker/PatternMatching.scala +++ b/src/compiler/scala/tools/nsc/typechecker/PatternMatching.scala @@ -1954,7 +1954,8 @@ trait PatternMatching extends Transform with TypingTransformers with ast.TreeDSL // // TODO: for V1 representing x1 and V2 standing for x1.head, encode that // V1 = Nil implies -(V2 = Ci) for all Ci in V2's domain (i.e., it is unassignable) - def removeVarEq(props: List[Prop], modelNull: Boolean = false): (Prop, List[Prop]) = { + // may throw an AnalysisBudget.Exception + def removeVarEq(props: List[Prop], modelNull: Boolean = false): (Formula, List[Formula]) = { val start = if (Statistics.canEnable) Statistics.startTimer(patmatAnaVarEq) else null val vars = new scala.collection.mutable.HashSet[Var] @@ -1978,10 +1979,10 @@ trait PatternMatching extends Transform with TypingTransformers with ast.TreeDSL props foreach gatherEqualities.apply if (modelNull) vars foreach (_.registerNull) - val pure = props map rewriteEqualsToProp.apply + val pure = props map (p => eqFreePropToSolvable(rewriteEqualsToProp(p))) - var eqAxioms: Prop = True - def addAxiom(p: Prop) = eqAxioms = And(eqAxioms, p) + val eqAxioms = formulaBuilder + @inline def addAxiom(p: Prop) = addFormula(eqAxioms, eqFreePropToSolvable(p)) patmatDebug("removeVarEq vars: "+ vars) vars.foreach { v => @@ -2007,23 +2008,37 @@ trait PatternMatching extends Transform with TypingTransformers with ast.TreeDSL } } - patmatDebug("eqAxioms:\n"+ cnfString(eqFreePropToSolvable(eqAxioms))) - patmatDebug("pure:"+ pure.map(p => cnfString(eqFreePropToSolvable(p))).mkString("\n")) + patmatDebug("eqAxioms:\n"+ cnfString(toFormula(eqAxioms))) + patmatDebug("pure:"+ pure.map(p => cnfString(p)).mkString("\n")) if (Statistics.canEnable) Statistics.stopTimer(patmatAnaVarEq, start) - (eqAxioms, pure) + (toFormula(eqAxioms), pure) } + // an interface that should be suitable for feeding a SAT solver when the time comes type Formula + type FormulaBuilder + + // creates an empty formula builder to which more formulae can be added + def formulaBuilder: FormulaBuilder + + // val f = formulaBuilder; addFormula(f, f1); ... addFormula(f, fN) + // toFormula(f) == andFormula(f1, andFormula(..., fN)) + def addFormula(buff: FormulaBuilder, f: Formula): Unit + def toFormula(buff: FormulaBuilder): Formula + + // the conjunction of formulae `a` and `b` def andFormula(a: Formula, b: Formula): Formula + // equivalent formula to `a`, but simplified in a lightweight way (drop duplicate clauses) + def simplifyFormula(a: Formula): Formula // may throw an AnalysisBudget.Exception def propToSolvable(p: Prop): Formula = { val (eqAxioms, pure :: Nil) = removeVarEq(List(p), modelNull = false) - eqFreePropToSolvable(And(eqAxioms, pure)) + andFormula(eqAxioms, pure) } // may throw an AnalysisBudget.Exception @@ -2039,24 +2054,34 @@ trait PatternMatching extends Transform with TypingTransformers with ast.TreeDSL } trait CNF extends Logic { - // CNF: a formula is a conjunction of clauses - type Formula = Array[Clause] /** Override Array creation for efficiency (to not go through reflection). */ private implicit val clauseTag: scala.reflect.ClassTag[Clause] = new scala.reflect.ClassTag[Clause] { def runtimeClass: java.lang.Class[Clause] = classOf[Clause] final override def newArray(len: Int): Array[Clause] = new Array[Clause](len) } - def formula(c: Clause*): Formula = c.toArray - def andFormula(a: Formula, b: Formula): Formula = a ++ b + import scala.collection.mutable.ArrayBuffer + type FormulaBuilder = ArrayBuffer[Clause] + def formulaBuilder = ArrayBuffer[Clause]() + def addFormula(buff: FormulaBuilder, f: Formula): Unit = buff ++= f + def toFormula(buff: FormulaBuilder): Formula = buff + + // CNF: a formula is a conjunction of clauses + type Formula = FormulaBuilder + def formula(c: Clause*): Formula = ArrayBuffer(c: _*) + + type Clause = Set[Lit] // a clause is a disjunction of distinct literals - type Clause = Set[Lit] def clause(l: Lit*): Clause = l.toSet - private def merge(a: Clause, b: Clause) = a ++ b type Lit def Lit(sym: Sym, pos: Boolean = true): Lit + def andFormula(a: Formula, b: Formula): Formula = a ++ b + def simplifyFormula(a: Formula): Formula = a.distinct + + private def merge(a: Clause, b: Clause) = a ++ b + // throws an AnalysisBudget.Exception when the prop results in a CNF that's too big // TODO: be smarter/more efficient about this (http://lara.epfl.ch/w/sav09:tseitin_s_encoding) def eqFreePropToSolvable(p: Prop): Formula = { @@ -2621,23 +2646,22 @@ trait PatternMatching extends Transform with TypingTransformers with ast.TreeDSL val propsCasesOk = testCasesOk map (t => symbolicCase(t, modelNull = true)) val propsCasesFail = testCasesFail map (t => Not(symbolicCase(t, modelNull = true))) - val (eqAxiomsFail, symbolicCasesFail) = removeVarEq(propsCasesFail, modelNull = true) - val (eqAxiomsOk, symbolicCasesOk) = removeVarEq(propsCasesOk, modelNull = true) try { - // most of the time eqAxiomsFail == eqAxiomsOk, but the different approximations might cause different variables to disapper in general - val eqAxiomsCNF = - if (eqAxiomsFail == eqAxiomsOk) eqFreePropToSolvable(eqAxiomsFail) - else eqFreePropToSolvable(And(eqAxiomsFail, eqAxiomsOk)) + val (eqAxiomsFail, symbolicCasesFail) = removeVarEq(propsCasesFail, modelNull = true) + val (eqAxiomsOk, symbolicCasesOk) = removeVarEq(propsCasesOk, modelNull = true) + val eqAxioms = simplifyFormula(andFormula(eqAxiomsOk, eqAxiomsFail)) // I'm pretty sure eqAxiomsOk == eqAxiomsFail, but not 100% sure. + + val prefix = formulaBuilder + addFormula(prefix, eqAxioms) - var prefix = eqAxiomsCNF var prefixRest = symbolicCasesFail var current = symbolicCasesOk var reachable = true var caseIndex = 0 patmatDebug("reachability, vars:\n"+ ((propsCasesFail flatMap gatherVariables).distinct map (_.describe) mkString ("\n"))) - patmatDebug("equality axioms:\n"+ cnfString(eqAxiomsCNF)) + patmatDebug("equality axioms:\n"+ cnfString(eqAxiomsOk)) // invariant (prefixRest.length == current.length) && (prefix.reverse ++ prefixRest == symbolicCasesFail) // termination: prefixRest.length decreases by 1 @@ -2647,11 +2671,11 @@ trait PatternMatching extends Transform with TypingTransformers with ast.TreeDSL prefixRest = prefixRest.tail if (prefixRest.isEmpty) reachable = true else { - prefix = andFormula(eqFreePropToSolvable(prefHead), prefix) + addFormula(prefix, prefHead) current = current.tail - val model = findModelFor(andFormula(eqFreePropToSolvable(current.head), prefix)) + val model = findModelFor(andFormula(current.head, toFormula(prefix))) - // patmatDebug("trying to reach:\n"+ cnfString(eqFreePropToSolvable(current.head)) +"\nunder prefix:\n"+ cnfString(prefix)) + // patmatDebug("trying to reach:\n"+ cnfString(current.head) +"\nunder prefix:\n"+ cnfString(prefix)) // if (NoModel ne model) patmatDebug("reached: "+ modelString(model)) reachable = NoModel ne model @@ -3220,6 +3244,7 @@ trait PatternMatching extends Transform with TypingTransformers with ast.TreeDSL // TODO: make more fine-grained, as we don't always need to jump def canJump: Boolean + /** Should exhaustivity analysis be skipped? */ def unchecked: Boolean @@ -3453,12 +3478,10 @@ trait PatternMatching extends Transform with TypingTransformers with ast.TreeDSL case Some(cds) => cds } - val allReachable = unchecked || { - // a switch with duplicate cases yields a verify error, - // and a switch with duplicate cases and guards cannot soundly be rewritten to an unguarded switch - // (even though the verify error would disappear, the behaviour would change) - unreachableCase(caseDefsWithGuards) map (cd => reportUnreachable(cd.body.pos)) isEmpty - } + // a switch with duplicate cases yields a verify error, + // and a switch with duplicate cases and guards cannot soundly be rewritten to an unguarded switch + // (even though the verify error would disappear, the behaviour would change) + val allReachable = unreachableCase(caseDefsWithGuards) map (cd => reportUnreachable(cd.body.pos)) isEmpty if (!allReachable) Nil else if (noGuards(caseDefsWithGuards)) { @@ -3707,10 +3730,10 @@ trait PatternMatching extends Transform with TypingTransformers with ast.TreeDSL with SymbolicMatchAnalysis with DPLLSolver { self: TreeMakers => override def optimizeCases(prevBinder: Symbol, cases: List[List[TreeMaker]], pt: Type, unchecked: Boolean): (List[List[TreeMaker]], List[Tree]) = { + unreachableCase(prevBinder, cases, pt) foreach { caseIndex => + reportUnreachable(cases(caseIndex).last.pos) + } if (!unchecked) { - unreachableCase(prevBinder, cases, pt) foreach { caseIndex => - reportUnreachable(cases(caseIndex).last.pos) - } val counterExamples = exhaustive(prevBinder, cases, pt) if (counterExamples.nonEmpty) reportMissingCases(prevBinder.pos, counterExamples) diff --git a/src/compiler/scala/tools/nsc/typechecker/RefChecks.scala b/src/compiler/scala/tools/nsc/typechecker/RefChecks.scala index 7118375b82..969bb8aceb 100644 --- a/src/compiler/scala/tools/nsc/typechecker/RefChecks.scala +++ b/src/compiler/scala/tools/nsc/typechecker/RefChecks.scala @@ -1062,6 +1062,12 @@ abstract class RefChecks extends InfoTransform with scala.reflect.internal.trans def apply(tp: Type) = mapOver(tp).normalize } + def checkImplicitViewOptionApply(pos: Position, fn: Tree, args: List[Tree]): Unit = if (settings.lint.value) (fn, args) match { + case (tap@TypeApply(fun, targs), List(view: ApplyImplicitView)) if fun.symbol == Option_apply => + unit.warning(pos, s"Suspicious application of an implicit view (${view.fun}) in the argument to Option.apply.") // SI-6567 + case _ => + } + def checkSensible(pos: Position, fn: Tree, args: List[Tree]) = fn match { case Select(qual, name @ (nme.EQ | nme.NE | nme.eq | nme.ne)) if args.length == 1 => def isReferenceOp = name == nme.eq || name == nme.ne @@ -1563,7 +1569,10 @@ abstract class RefChecks extends InfoTransform with scala.reflect.internal.trans case Apply(fn, args) => // sensicality should be subsumed by the unreachability/exhaustivity/irrefutability analyses in the pattern matcher - if (!inPattern) checkSensible(tree.pos, fn, args) + if (!inPattern) { + checkImplicitViewOptionApply(tree.pos, fn, args) + checkSensible(tree.pos, fn, args) + } currentApplication = tree tree } diff --git a/src/compiler/scala/tools/nsc/typechecker/Typers.scala b/src/compiler/scala/tools/nsc/typechecker/Typers.scala index cbcddba487..553583e6b7 100644 --- a/src/compiler/scala/tools/nsc/typechecker/Typers.scala +++ b/src/compiler/scala/tools/nsc/typechecker/Typers.scala @@ -1748,8 +1748,8 @@ trait Typers extends Modes with Adaptations with Tags { */ def validateParentClasses(parents: List[Tree], selfType: Type) { val pending = ListBuffer[AbsTypeError]() - def validateDynamicParent(parent: Symbol) = - if (parent == DynamicClass) checkFeature(parent.pos, DynamicsFeature) + def validateDynamicParent(parent: Symbol, parentPos: Position) = + if (parent == DynamicClass) checkFeature(parentPos, DynamicsFeature) def validateParentClass(parent: Tree, superclazz: Symbol) = if (!parent.isErrorTyped) { @@ -1799,7 +1799,7 @@ trait Typers extends Modes with Adaptations with Tags { if (parents exists (p => p != parent && p.tpe.typeSymbol == psym && !psym.isError)) pending += ParentInheritedTwiceError(parent, psym) - validateDynamicParent(psym) + validateDynamicParent(psym, parent.pos) } if (!parents.isEmpty && parents.forall(!_.isErrorTyped)) { @@ -5367,7 +5367,7 @@ trait Typers extends Modes with Adaptations with Tags { var block1 = typed(tree.block, pt) var catches1 = typedCases(tree.catches, ThrowableClass.tpe, pt) - for (cdef <- catches1 if cdef.guard.isEmpty) { + for (cdef <- catches1 if !isPastTyper && cdef.guard.isEmpty) { def warn(name: Name) = context.warning(cdef.pat.pos, s"This catches all Throwables. If this is really intended, use `case ${name.decoded} : Throwable` to clear this warning.") def unbound(t: Tree) = t.symbol == null || t.symbol == NoSymbol cdef.pat match { diff --git a/src/compiler/scala/tools/util/SocketServer.scala b/src/compiler/scala/tools/util/SocketServer.scala index d29a370c28..1b06ce2ff2 100644 --- a/src/compiler/scala/tools/util/SocketServer.scala +++ b/src/compiler/scala/tools/util/SocketServer.scala @@ -16,8 +16,8 @@ trait CompileOutputCommon { def verbose: Boolean def info(msg: String) = if (verbose) echo(msg) - def echo(msg: String) = Console println msg - def warn(msg: String) = System.err println msg + def echo(msg: String) = {Console println msg; Console.flush} + def warn(msg: String) = {Console.err println msg; Console.flush} def fatal(msg: String) = { warn(msg) ; sys.exit(1) } } diff --git a/src/library/scala/Array.scala b/src/library/scala/Array.scala index 90684b5fdd..b9f51803ec 100644 --- a/src/library/scala/Array.scala +++ b/src/library/scala/Array.scala @@ -115,6 +115,8 @@ object Array extends FallbackArrayBuilding { * @param xs the elements to put in the array * @return an array containing all elements from xs. */ + // Subject to a compiler optimization in Cleanup. + // Array(e0, ..., en) is translated to { val a = new Array(3); a(i) = ei; a } def apply[T: ClassTag](xs: T*): Array[T] = { val array = new Array[T](xs.length) var i = 0 @@ -123,6 +125,7 @@ object Array extends FallbackArrayBuilding { } /** Creates an array of `Boolean` objects */ + // Subject to a compiler optimization in Cleanup, see above. def apply(x: Boolean, xs: Boolean*): Array[Boolean] = { val array = new Array[Boolean](xs.length + 1) array(0) = x @@ -132,6 +135,7 @@ object Array extends FallbackArrayBuilding { } /** Creates an array of `Byte` objects */ + // Subject to a compiler optimization in Cleanup, see above. def apply(x: Byte, xs: Byte*): Array[Byte] = { val array = new Array[Byte](xs.length + 1) array(0) = x @@ -141,6 +145,7 @@ object Array extends FallbackArrayBuilding { } /** Creates an array of `Short` objects */ + // Subject to a compiler optimization in Cleanup, see above. def apply(x: Short, xs: Short*): Array[Short] = { val array = new Array[Short](xs.length + 1) array(0) = x @@ -150,6 +155,7 @@ object Array extends FallbackArrayBuilding { } /** Creates an array of `Char` objects */ + // Subject to a compiler optimization in Cleanup, see above. def apply(x: Char, xs: Char*): Array[Char] = { val array = new Array[Char](xs.length + 1) array(0) = x @@ -159,6 +165,7 @@ object Array extends FallbackArrayBuilding { } /** Creates an array of `Int` objects */ + // Subject to a compiler optimization in Cleanup, see above. def apply(x: Int, xs: Int*): Array[Int] = { val array = new Array[Int](xs.length + 1) array(0) = x @@ -168,6 +175,7 @@ object Array extends FallbackArrayBuilding { } /** Creates an array of `Long` objects */ + // Subject to a compiler optimization in Cleanup, see above. def apply(x: Long, xs: Long*): Array[Long] = { val array = new Array[Long](xs.length + 1) array(0) = x @@ -177,6 +185,7 @@ object Array extends FallbackArrayBuilding { } /** Creates an array of `Float` objects */ + // Subject to a compiler optimization in Cleanup, see above. def apply(x: Float, xs: Float*): Array[Float] = { val array = new Array[Float](xs.length + 1) array(0) = x @@ -186,6 +195,7 @@ object Array extends FallbackArrayBuilding { } /** Creates an array of `Double` objects */ + // Subject to a compiler optimization in Cleanup, see above. def apply(x: Double, xs: Double*): Array[Double] = { val array = new Array[Double](xs.length + 1) array(0) = x diff --git a/src/library/scala/collection/mutable/HashSet.scala b/src/library/scala/collection/mutable/HashSet.scala index 74f2a6c762..c60e363f8f 100644 --- a/src/library/scala/collection/mutable/HashSet.scala +++ b/src/library/scala/collection/mutable/HashSet.scala @@ -88,7 +88,7 @@ extends AbstractSet[A] } private def readObject(in: java.io.ObjectInputStream) { - init(in, x => x) + init(in, x => ()) } /** Toggles whether a size map is used to track hash map statistics. diff --git a/src/library/scala/collection/parallel/mutable/ParArray.scala b/src/library/scala/collection/parallel/mutable/ParArray.scala index e4c8e5fae2..0a4f30131f 100644 --- a/src/library/scala/collection/parallel/mutable/ParArray.scala +++ b/src/library/scala/collection/parallel/mutable/ParArray.scala @@ -469,7 +469,6 @@ self => Array.copy(arr, i, targetarr, 0, until - i) pac.buff.size = pac.buff.size + until - i pac.buff.lastPtr.size = until - i - pac } otherwise { copy2builder_quick(cb, arr, until, i) i = until @@ -531,7 +530,6 @@ self => val targetarr: Array[Any] = pac.lastbuff.internalArray.asInstanceOf[Array[Any]] reverse2combiner_quick(targetarr, arr, 0, i, until) pac.lastbuff.setInternalSize(sz) - pac } otherwise { cb.ifIs[UnrolledParArrayCombiner[T]] { pac => @@ -542,7 +540,6 @@ self => reverse2combiner_quick(targetarr, arr, 0, i, until) pac.buff.size = pac.buff.size + sz pac.buff.lastPtr.size = sz - pac } otherwise super.reverse2combiner(cb) } cb diff --git a/src/library/scala/collection/parallel/mutable/ParHashSet.scala b/src/library/scala/collection/parallel/mutable/ParHashSet.scala index 3b1278f3be..57fab57348 100644 --- a/src/library/scala/collection/parallel/mutable/ParHashSet.scala +++ b/src/library/scala/collection/parallel/mutable/ParHashSet.scala @@ -85,7 +85,7 @@ extends ParSet[T] } private def readObject(in: java.io.ObjectInputStream) { - init(in, x => x) + init(in, x => ()) } import scala.collection.DebugUtils._ diff --git a/src/partest/scala/tools/partest/PartestTask.scala b/src/partest/scala/tools/partest/PartestTask.scala index d9f2bfe765..0199400ada 100644 --- a/src/partest/scala/tools/partest/PartestTask.scala +++ b/src/partest/scala/tools/partest/PartestTask.scala @@ -355,7 +355,7 @@ class PartestTask extends Task with CompilationPathProperty { javacmd foreach (x => antFileManager.JAVACMD = x.getAbsolutePath) javaccmd foreach (x => antFileManager.JAVAC_CMD = x.getAbsolutePath) - scalacArgsFlat foreach (antFileManager.SCALAC_OPTS = _) + scalacArgsFlat foreach (antFileManager.SCALAC_OPTS ++= _) timeout foreach (antFileManager.timeout = _) type TFSet = (Array[File], String, String) diff --git a/src/partest/scala/tools/partest/javaagent/ASMTransformer.java b/src/partest/scala/tools/partest/javaagent/ASMTransformer.java index 494a5a99be..878c8613d5 100644 --- a/src/partest/scala/tools/partest/javaagent/ASMTransformer.java +++ b/src/partest/scala/tools/partest/javaagent/ASMTransformer.java @@ -26,9 +26,18 @@ public class ASMTransformer implements ClassFileTransformer { className.startsWith("instrumented/")); } - public byte[] transform(ClassLoader loader, String className, Class<?> classBeingRedefined, ProtectionDomain protectionDomain, byte[] classfileBuffer) { + public byte[] transform(final ClassLoader classLoader, final String className, Class<?> classBeingRedefined, ProtectionDomain protectionDomain, byte[] classfileBuffer) { if (shouldTransform(className)) { - ClassWriter writer = new ClassWriter(ClassWriter.COMPUTE_FRAMES | ClassWriter.COMPUTE_MAXS); + ClassWriter writer = new ClassWriter(ClassWriter.COMPUTE_MAXS) { + @Override protected String getCommonSuperClass(final String type1, final String type2) { + // Since we are not recomputing stack frame map, this should never be called we override this method because + // default implementation uses reflection for implementation and might try to load the class that we are + // currently processing. That leads to weird results like swallowed exceptions and classes being not + // transformed. + throw new RuntimeException("Unexpected call to getCommonSuperClass(" + type1 + ", " + type2 + + ") while transforming " + className); + } + }; ProfilerVisitor visitor = new ProfilerVisitor(writer); ClassReader reader = new ClassReader(classfileBuffer); reader.accept(visitor, 0); diff --git a/src/partest/scala/tools/partest/javaagent/ProfilerVisitor.java b/src/partest/scala/tools/partest/javaagent/ProfilerVisitor.java index ac83f66506..8306327b14 100644 --- a/src/partest/scala/tools/partest/javaagent/ProfilerVisitor.java +++ b/src/partest/scala/tools/partest/javaagent/ProfilerVisitor.java @@ -33,6 +33,19 @@ public class ProfilerVisitor extends ClassVisitor implements Opcodes { // only instrument non-abstract methods if((access & ACC_ABSTRACT) == 0) { assert(className != null); + /* The following instructions do not modify compressed stack frame map so + * we don't need to worry about recalculating stack frame map. Specifically, + * let's quote "ASM 4.0, A Java bytecode engineering library" guide (p. 40): + * + * In order to save space, a compiled method does not contain one frame per + * instruction: in fact it contains only the frames for the instructions + * that correspond to jump targets or exception handlers, or that follow + * unconditional jump instructions. Indeed the other frames can be easily + * and quickly inferred from these ones. + * + * Instructions below are just loading constants and calling a method so according + * to definition above they do not contribute to compressed stack frame map. + */ mv.visitLdcInsn(className); mv.visitLdcInsn(name); mv.visitLdcInsn(desc); diff --git a/src/partest/scala/tools/partest/javaagent/ProfilingAgent.java b/src/partest/scala/tools/partest/javaagent/ProfilingAgent.java index c2e4dc69f4..3b18987040 100644 --- a/src/partest/scala/tools/partest/javaagent/ProfilingAgent.java +++ b/src/partest/scala/tools/partest/javaagent/ProfilingAgent.java @@ -20,6 +20,6 @@ public class ProfilingAgent { // and the test-case itself won't be loaded yet. We rely here on the fact that ASMTransformer does // not depend on Scala library. In case our assumptions are wrong we can always insert call to // inst.retransformClasses. - inst.addTransformer(new ASMTransformer(), true); + inst.addTransformer(new ASMTransformer(), false); } } diff --git a/src/partest/scala/tools/partest/nest/SBTRunner.scala b/src/partest/scala/tools/partest/nest/SBTRunner.scala index b0ce6579ac..20f9c701d5 100644 --- a/src/partest/scala/tools/partest/nest/SBTRunner.scala +++ b/src/partest/scala/tools/partest/nest/SBTRunner.scala @@ -46,7 +46,7 @@ object SBTRunner extends DirectRunner { case x => sys.error("Unknown command line options: " + x) } val config = parseArgs(args, CommandLineOptions()) - fileManager.SCALAC_OPTS = config.scalacOptions + fileManager.SCALAC_OPTS ++= config.scalacOptions fileManager.CLASSPATH = config.classpath getOrElse sys.error("No classpath set") def findClasspath(jar: String, name: String): Option[String] = { diff --git a/src/reflect/scala/reflect/internal/Definitions.scala b/src/reflect/scala/reflect/internal/Definitions.scala index 2a7b55cb5a..4269b65297 100644 --- a/src/reflect/scala/reflect/internal/Definitions.scala +++ b/src/reflect/scala/reflect/internal/Definitions.scala @@ -337,12 +337,13 @@ trait Definitions extends api.StandardDefinitions { lazy val PredefModule = requiredModule[scala.Predef.type] lazy val PredefModuleClass = PredefModule.moduleClass - def Predef_classOf = getMemberMethod(PredefModule, nme.classOf) - def Predef_identity = getMemberMethod(PredefModule, nme.identity) - def Predef_conforms = getMemberMethod(PredefModule, nme.conforms) - def Predef_wrapRefArray = getMemberMethod(PredefModule, nme.wrapRefArray) - def Predef_??? = getMemberMethod(PredefModule, nme.???) - def Predef_implicitly = getMemberMethod(PredefModule, nme.implicitly) + def Predef_classOf = getMemberMethod(PredefModule, nme.classOf) + def Predef_identity = getMemberMethod(PredefModule, nme.identity) + def Predef_conforms = getMemberMethod(PredefModule, nme.conforms) + def Predef_wrapRefArray = getMemberMethod(PredefModule, nme.wrapRefArray) + def Predef_wrapArray(tp: Type) = getMemberMethod(PredefModule, wrapArrayMethodName(tp)) + def Predef_??? = getMemberMethod(PredefModule, nme.???) + def Predef_implicitly = getMemberMethod(PredefModule, nme.implicitly) /** Is `sym` a member of Predef with the given name? * Note: DON't replace this by sym == Predef_conforms/etc, as Predef_conforms is a `def` @@ -466,6 +467,8 @@ trait Definitions extends api.StandardDefinitions { // arrays and their members lazy val ArrayModule = requiredModule[scala.Array.type] lazy val ArrayModule_overloadedApply = getMemberMethod(ArrayModule, nme.apply) + def ArrayModule_genericApply = ArrayModule_overloadedApply.suchThat(_.paramss.flatten.last.tpe.typeSymbol == ClassTagClass) // [T: ClassTag](xs: T*): Array[T] + def ArrayModule_apply(tp: Type) = ArrayModule_overloadedApply.suchThat(_.tpe.resultType =:= arrayType(tp)) // (p1: AnyVal1, ps: AnyVal1*): Array[AnyVal1] lazy val ArrayClass = getRequiredClass("scala.Array") // requiredClass[scala.Array[_]] lazy val Array_apply = getMemberMethod(ArrayClass, nme.apply) lazy val Array_update = getMemberMethod(ArrayClass, nme.update) @@ -536,10 +539,12 @@ trait Definitions extends api.StandardDefinitions { lazy val ScalaLongSignatureAnnotation = requiredClass[scala.reflect.ScalaLongSignature] // Option classes - lazy val OptionClass: ClassSymbol = requiredClass[Option[_]] - lazy val SomeClass: ClassSymbol = requiredClass[Some[_]] - lazy val NoneModule: ModuleSymbol = requiredModule[scala.None.type] - lazy val SomeModule: ModuleSymbol = requiredModule[scala.Some.type] + lazy val OptionClass: ClassSymbol = requiredClass[Option[_]] + lazy val OptionModule: ModuleSymbol = requiredModule[scala.Option.type] + lazy val Option_apply = getMemberMethod(OptionModule, nme.apply) + lazy val SomeClass: ClassSymbol = requiredClass[Some[_]] + lazy val NoneModule: ModuleSymbol = requiredModule[scala.None.type] + lazy val SomeModule: ModuleSymbol = requiredModule[scala.Some.type] def compilerTypeFromTag(tt: ApiUniverse # WeakTypeTag[_]): Type = tt.in(rootMirror).tpe def compilerSymbolFromTag(tt: ApiUniverse # WeakTypeTag[_]): Symbol = tt.in(rootMirror).tpe.typeSymbol diff --git a/src/reflect/scala/reflect/internal/TreeInfo.scala b/src/reflect/scala/reflect/internal/TreeInfo.scala index 8908036442..e1a18570b2 100644 --- a/src/reflect/scala/reflect/internal/TreeInfo.scala +++ b/src/reflect/scala/reflect/internal/TreeInfo.scala @@ -234,6 +234,20 @@ abstract class TreeInfo { tree } + /** Strips layers of `.asInstanceOf[T]` / `_.$asInstanceOf[T]()` from an expression */ + def stripCast(tree: Tree): Tree = tree match { + case TypeApply(sel @ Select(inner, _), _) if isCastSymbol(sel.symbol) => + stripCast(inner) + case Apply(TypeApply(sel @ Select(inner, _), _), Nil) if isCastSymbol(sel.symbol) => + stripCast(inner) + case t => + t + } + + object StripCast { + def unapply(tree: Tree): Some[Tree] = Some(stripCast(tree)) + } + /** Is tree a self or super constructor call? */ def isSelfOrSuperConstrCall(tree: Tree) = { // stripNamedApply for SI-3584: adaptToImplicitMethod in Typers creates a special context diff --git a/src/reflect/scala/reflect/internal/Types.scala b/src/reflect/scala/reflect/internal/Types.scala index c2637e6967..dbc00edb1a 100644 --- a/src/reflect/scala/reflect/internal/Types.scala +++ b/src/reflect/scala/reflect/internal/Types.scala @@ -2481,8 +2481,10 @@ trait Types extends api.Types { self: SymbolTable => // from (T1, T2) => R. targs match { case in :: out :: Nil if !isTupleType(in) => - // A => B => C should be (A => B) => C or A => (B => C) - val in_s = if (isFunctionType(in)) "(" + in + ")" else "" + in + // A => B => C should be (A => B) => C or A => (B => C). + // Also if A is byname, then we want (=> A) => B because => is right associative and => A => B + // would mean => (A => B) which is a different type + val in_s = if (isFunctionType(in) || isByNameParamType(in)) "(" + in + ")" else "" + in val out_s = if (isFunctionType(out)) "(" + out + ")" else "" + out in_s + " => " + out_s case xs => diff --git a/test/files/instrumented/t6611.check b/test/files/instrumented/t6611.check new file mode 100644 index 0000000000..5cd691e93a --- /dev/null +++ b/test/files/instrumented/t6611.check @@ -0,0 +1 @@ +Method call statistics: diff --git a/test/files/instrumented/t6611.scala b/test/files/instrumented/t6611.scala new file mode 100644 index 0000000000..4c52f8a5ef --- /dev/null +++ b/test/files/instrumented/t6611.scala @@ -0,0 +1,35 @@ +import scala.tools.partest.instrumented.Instrumentation._ + +object Test { + def main(args: Array[String]) { + startProfiling() + + // tests optimization in Cleanup for varargs reference arrays + Array("") + + + Array(true) + Array(true, false) + Array(1: Byte) + Array(1: Byte, 2: Byte) + Array(1: Short) + Array(1: Short, 2: Short) + Array(1) + Array(1, 2) + Array(1L) + Array(1L, 2L) + Array(1d) + Array(1d, 2d) + Array(1f) + Array(1f, 2f) + + /* Not currently optimized: + Array[Int](1, 2) etc + Array(()) + Array((), ()) + */ + + stopProfiling() + printStatistics() + } +} diff --git a/test/files/neg/t5753/Impls$class.class b/test/files/neg/t5753/Impls$class.class Binary files differdeleted file mode 100644 index 476329174e..0000000000 --- a/test/files/neg/t5753/Impls$class.class +++ /dev/null diff --git a/test/files/neg/t5753/Impls.class b/test/files/neg/t5753/Impls.class Binary files differdeleted file mode 100644 index dfcf89ed44..0000000000 --- a/test/files/neg/t5753/Impls.class +++ /dev/null diff --git a/test/files/neg/t6040.check b/test/files/neg/t6040.check index f6757f97e3..f91df0c46d 100644 --- a/test/files/neg/t6040.check +++ b/test/files/neg/t6040.check @@ -1,7 +1,9 @@ -error: extension of type scala.Dynamic needs to be enabled +t6040.scala:1: error: extension of type scala.Dynamic needs to be enabled by making the implicit value language.dynamics visible. This can be achieved by adding the import clause 'import scala.language.dynamics' or by setting the compiler option -language:dynamics. See the Scala docs for value scala.language.dynamics for a discussion why the feature needs to be explicitly enabled. +class X extends Dynamic + ^ one error found diff --git a/test/files/neg/t6567.check b/test/files/neg/t6567.check new file mode 100644 index 0000000000..4c513e64cd --- /dev/null +++ b/test/files/neg/t6567.check @@ -0,0 +1,7 @@ +t6567.scala:8: error: Suspicious application of an implicit view (Test.this.a2b) in the argument to Option.apply. + Option[B](a) + ^ +t6567.scala:10: error: Suspicious application of an implicit view (Test.this.a2b) in the argument to Option.apply. + val b: Option[B] = Option(a) + ^ +two errors found diff --git a/test/files/neg/t6567.flags b/test/files/neg/t6567.flags new file mode 100644 index 0000000000..e93641e931 --- /dev/null +++ b/test/files/neg/t6567.flags @@ -0,0 +1 @@ +-Xlint -Xfatal-warnings
\ No newline at end of file diff --git a/test/files/neg/t6567.scala b/test/files/neg/t6567.scala new file mode 100644 index 0000000000..650e5e39ae --- /dev/null +++ b/test/files/neg/t6567.scala @@ -0,0 +1,11 @@ +class A +class B + +object Test { + val a: A = null + implicit def a2b(a: A) = new B + + Option[B](a) + + val b: Option[B] = Option(a) +} diff --git a/test/files/neg/t6666.check b/test/files/neg/t6666.check new file mode 100644 index 0000000000..d0378173ea --- /dev/null +++ b/test/files/neg/t6666.check @@ -0,0 +1,40 @@ +t6666.scala:23: error: Implementation restriction: access of method x$2 in object O1 from anonymous class 2, would require illegal premature access to object O1 + F.byname(x) + ^ +t6666.scala:30: error: Implementation restriction: access of value x$3 in object O2 from anonymous class 3, would require illegal premature access to object O2 + F.byname(x) + ^ +t6666.scala:37: error: Implementation restriction: access of method x$4 in object O3 from anonymous class 4, would require illegal premature access to object O3 + F.hof(() => x) + ^ +t6666.scala:50: error: Implementation restriction: access of method x$6 in class C1 from anonymous class 7, would require illegal premature access to the unconstructed `this` of class C1 + F.byname(x) + ^ +t6666.scala:54: error: Implementation restriction: access of value x$7 in class C2 from anonymous class 8, would require illegal premature access to the unconstructed `this` of class C2 + F.byname(x) + ^ +t6666.scala:58: error: Implementation restriction: access of method x$8 in class C3 from anonymous class 9, would require illegal premature access to the unconstructed `this` of class C3 + F.hof(() => x) + ^ +t6666.scala:62: error: Implementation restriction: access of method x$9 in class C4 from object Nested$5, would require illegal premature access to the unconstructed `this` of class C4 + object Nested { def xx = x} + ^ +t6666.scala:68: error: Implementation restriction: access of method x$10 in class C5 from object Nested$6, would require illegal premature access to the unconstructed `this` of class C5 + object Nested { def xx = x} + ^ +t6666.scala:83: error: Implementation restriction: access of method x$12 in class C11 from anonymous class 12, would require illegal premature access to the unconstructed `this` of class C11 + F.byname(x) + ^ +t6666.scala:102: error: Implementation restriction: access of method x$13 in class C13 from anonymous class 13, would require illegal premature access to the unconstructed `this` of class C13 + F.hof(() => x) + ^ +t6666.scala:111: error: Implementation restriction: access of method x$14 in class C14 from object Nested$7, would require illegal premature access to the unconstructed `this` of class C14 + object Nested { def xx = x} + ^ +t6666.scala:122: error: Implementation restriction: access of method x$15 in class C15 from object Nested$8, would require illegal premature access to the unconstructed `this` of class C15 + object Nested { def xx = x} + ^ +t6666.scala:131: error: Implementation restriction: access of method foo$1 in class COuter from class CInner$1, would require illegal premature access to the unconstructed `this` of class COuter + class CInner extends C({foo}) + ^ +13 errors found diff --git a/test/files/neg/t6666.scala b/test/files/neg/t6666.scala new file mode 100644 index 0000000000..d37ffaf141 --- /dev/null +++ b/test/files/neg/t6666.scala @@ -0,0 +1,132 @@ +class C(a: Any) +object F { + def byname(a: => Any) = println(a) + def hof(a: () => Any) = println(a()) +} + +class COkay extends C(0) { + def this(a: Any) { + this() + def x = "".toString + F.byname(x) + } +} + +// +// The thunk's apply method accesses the MODULE$ +// field before it is set. +// +// 0: getstatic #23; //Field O1$.MODULE$:LO1$; +// 3: invokevirtual #26; //Method O1$.O1$$x$1:()Ljava/lang/String; +object O1 extends C({ + def x = "".toString + F.byname(x) +}) + +// java.lang.NullPointerException +// at O2$$anonfun$$init$$1.apply(<console>:11) +object O2 extends C({ + lazy val x = "".toString + F.byname(x) +}) + +// java.lang.NullPointerException +// at O3$$anonfun$$init$$1.apply(<console>:11) +object O3 extends C({ + def x = "".toString + F.hof(() => x) +}) + +// Okay, the nested classes don't get an outer pointer passed, +// just an extra param for `x: String`. +object O6 extends C({ + val x = "".toString + F.byname(x); F.hof(() => x); (new { val xx = x }.xx) +}) + + +class C1 extends C({ + def x = "".toString + F.byname(x) +}) +class C2 extends C({ + lazy val x = "".toString + F.byname(x) +}) +class C3 extends C({ + def x = "".toString + F.hof(() => x) +}) +class C4 extends C({ + def x = "".toString + object Nested { def xx = x} + Nested.xx +}) +class C5 extends C({ + def x = "".toString + val y = { + object Nested { def xx = x} + Nested.xx + } +}) + +// okay, for same reason as O6 +class C6 extends C({ + val x = "".toString + F.byname(x); F.hof(() => x); (new { val xx = x }.xx) +}) + +class C11(a: Any) { + def this() = { + this({ + def x = "".toString + F.byname(x) + }) + } +} + +// Crashes earlier in lazyVals. +// class C12(a: Any) { +// def this() = { +// this({ +// lazy val x = "".toString +// F.byname(x) +// }) +// } +// } + +class C13(a: Any) { + def this() = { + this({ + def x = "".toString + F.hof(() => x) + }) + } +} + +class C14(a: Any) { + def this() = { + this({ + def x = "".toString + object Nested { def xx = x} + Nested.xx + }) + } +} + +class C15(a: Any) { + def this() = { + this({ + def x = "".toString + val y = { + object Nested { def xx = x} + Nested.xx + } + }) + } +} + +class COuter extends C({ + def foo = 0 + class CInner extends C({foo}) +})
\ No newline at end of file diff --git a/test/files/neg/t6902.check b/test/files/neg/t6902.check new file mode 100644 index 0000000000..8ad7fd37f9 --- /dev/null +++ b/test/files/neg/t6902.check @@ -0,0 +1,10 @@ +t6902.scala:4: error: unreachable code + case Some(b) => 3 // no warning was emitted + ^ +t6902.scala:9: error: unreachable code + case Some(b) => 3 // no warning was emitted + ^ +t6902.scala:21: error: unreachable code + case 1 => 3 // crash + ^ +three errors found diff --git a/test/files/neg/t6902.flags b/test/files/neg/t6902.flags new file mode 100644 index 0000000000..e8fb65d50c --- /dev/null +++ b/test/files/neg/t6902.flags @@ -0,0 +1 @@ +-Xfatal-warnings
\ No newline at end of file diff --git a/test/files/neg/t6902.scala b/test/files/neg/t6902.scala new file mode 100644 index 0000000000..ce5ff8b6fb --- /dev/null +++ b/test/files/neg/t6902.scala @@ -0,0 +1,23 @@ +object Test { + Some(Some(1)) collect { + case Some(a) => 2 + case Some(b) => 3 // no warning was emitted + } + + (Some(1): @ unchecked) match { + case Some(a) => 2 + case Some(b) => 3 // no warning was emitted + } + + // A variation of SI-6011, which eluded the fix + // in 2.10.0. + // + // duplicate keys in SWITCH, can't pick arbitrarily one of them to evict, see SI-6011. + // at scala.reflect.internal.SymbolTable.abort(SymbolTable.scala:50) + // at scala.tools.nsc.Global.abort(Global.scala:249) + // at scala.tools.nsc.backend.jvm.GenASM$JPlainBuilder$jcode$.emitSWITCH(GenASM.scala:1850) + ((1: Byte): @unchecked @annotation.switch) match { + case 1 => 2 + case 1 => 3 // crash + } +} diff --git a/test/files/neg/t6952.check b/test/files/neg/t6952.check new file mode 100644 index 0000000000..f1e1881404 --- /dev/null +++ b/test/files/neg/t6952.check @@ -0,0 +1,13 @@ +t6952.scala:2: error: extension of type scala.Dynamic needs to be enabled +by making the implicit value language.dynamics visible. +This can be achieved by adding the import clause 'import scala.language.dynamics' +or by setting the compiler option -language:dynamics. +See the Scala docs for value scala.language.dynamics for a discussion +why the feature needs to be explicitly enabled. +trait B extends Dynamic + ^ +t6952.scala:3: error: extension of type scala.Dynamic needs to be enabled +by making the implicit value language.dynamics visible. +trait C extends A with Dynamic + ^ +two errors found diff --git a/test/files/neg/t6952.scala b/test/files/neg/t6952.scala new file mode 100644 index 0000000000..257ea3be68 --- /dev/null +++ b/test/files/neg/t6952.scala @@ -0,0 +1,4 @@ +trait A +trait B extends Dynamic +trait C extends A with Dynamic +trait D extends B diff --git a/test/files/pos/t6942.flags b/test/files/pos/t6942.flags new file mode 100644 index 0000000000..e8fb65d50c --- /dev/null +++ b/test/files/pos/t6942.flags @@ -0,0 +1 @@ +-Xfatal-warnings
\ No newline at end of file diff --git a/test/files/pos/t6942/Bar.java b/test/files/pos/t6942/Bar.java new file mode 100644 index 0000000000..592f62efb4 --- /dev/null +++ b/test/files/pos/t6942/Bar.java @@ -0,0 +1,235 @@ +package foo; + +public enum Bar { + ANGUILLA /*("US")*/, + ANTIGUA_AND_BARBUDA /*("US")*/, + ARGENTINA /*("US")*/, + ARUBA /*("US")*/, + BAHAMAS /*("US")*/, + BARBADOS /*("US")*/, + BELIZE /*("US")*/, + BERMUDA /*("US")*/, + BOLIVIA /*("US")*/, + BRAZIL /*("US")*/, + BRITISH_VIRGIN_ISLANDS /*("US")*/, + CANADA /*("US")*/, + CAYMAN_ISLANDS /*("US")*/, + CHILE /*("US")*/, + CHRISTMAS_ISLANDS /*("US")*/, + COCOS /*("US")*/, + COLOMBIA /*("US")*/, + COSTA_RICA /*("US")*/, + CUBA /*("US")*/, + DOMINICA /*("US")*/, + DOMINICAN_REPUBLIC /*("US")*/, + ECUADOR /*("US")*/, + EL_SALVADOR /*("US")*/, + FALKLAND_ISLANDS /*("US")*/, + GRENADA /*("US")*/, + GUADALOUPE /*("US")*/, + GUATEMALA /*("US")*/, + HAITI /*("US")*/, + HONDURAS /*("US")*/, + NETHERLANDS_ANTILLES /*("US")*/, + NICARAGUA /*("US")*/, + PANAMA /*("US")*/, + PARAGUAY /*("US")*/, + PERU /*("US")*/, + PUERTO_RICO /*("US")*/, + JAMAICA /*("US")*/, + MARTINIQUE /*("US")*/, + MEXICO /*("US")*/, + MONTSERRAT /*("US")*/, + ST_KITTS /*("US")*/, + ST_LUCIA /*("US")*/, + ST_VINCENT /*("US")*/, + SUPRA_NATIONAL /*("US")*/, + TRINIDAD /*("US")*/, + TURKS_AND_CAICOS /*("US")*/, + UNITED_STATES /*("US")*/, + URUGUAY /*("US")*/, + VENEZUELA /*("US")*/, + VIRGIN_ISLANDS /*("US")*/, + + AUSTRALIA /*("AP")*/, + BANGLADESH /*("AP")*/, + BHUTAN /*("AP")*/, + CAMBODIA /*("AP")*/, + CHINA /*("AP")*/, + COOK_ISLANDS /*("AP")*/, + EAST_TIMOR /*("AP")*/, + FIJI /*("AP")*/, + GUAM /*("AP")*/, + HONG_KONG /*("AP")*/, + INDIA /*("AP")*/, + INDONESIA /*("AP")*/, + JAPAN /*("AP")*/, + KIRIBATI /*("AP")*/, + LAOS /*("AP")*/, + MACAU /*("AP")*/, + MALAYSIA /*("AP")*/, + MICRONESIA /*("AP")*/, + MONGOLIA /*("AP")*/, + MYANMAR /*("AP")*/, + NEPAL /*("AP")*/, + NEW_CALEDONIA /*("AP")*/, + NEW_ZEALAND /*("AP")*/, + NORFOLK_ISLAND /*("AP")*/, + NORTH_KOREA /*("AP")*/, + PAKISTAN /*("AP")*/, + PALAU /*("AP")*/, + PAPUA_NEW_GUINEA /*("AP")*/, + PHILIPPINES /*("AP")*/, + PITCAIRN_ISLANDS /*("AP")*/, + SAMOA /*("AP")*/, + WEST_SAMOA /*("AP")*/, + SINGAPORE /*("AP")*/, + SOUTH_KOREA /*("AP")*/, + SRI_LANKA /*("AP")*/, + TAIWAN /*("AP")*/, + THAILAND /*("AP")*/, + TOKELAU /*("AP")*/, + TONGA /*("AP")*/, + TUVALU /*("AP")*/, + VANUATU /*("AP")*/, + VIETNAM /*("AP")*/, + + AFGHANISTAN /*("EU")*/, + ALBANIA /*("EU")*/, + ALGERIA /*("EU")*/, + ANDORRA /*("EU")*/, + ANGOLA /*("EU")*/, + ARMENIA /*("EU")*/, + AUSTRIA /*("EU")*/, + AZERBAIJAN /*("EU")*/, + BAHRAIN /*("EU")*/, + BELARUS /*("EU")*/, + BELGIUM /*("EU")*/, + BENIN /*("EU")*/, + BOSNIA_AND_HERZEGOVINA /*("EU")*/, + BOTSWANA /*("EU")*/, + BOUVET_ISLAND /*("EU")*/, + BRUNEI /*("EU")*/, + BULGARIA /*("EU")*/, + BURKINA_FASO /*("EU")*/, + BURUNDI /*("EU")*/, + CAMEROON /*("EU")*/, + CAPE_VERDE /*("EU")*/, + CHAD /*("EU")*/, + COMOROS /*("EU")*/, + CONGO /*("EU")*/, + CROATIA /*("EU")*/, + CYPRUS /*("EU")*/, + CZECH_REPUBLIC /*("EU")*/, + DR_CONGO /*("EU")*/, + DENMARK /*("EU")*/, + DJIBOUTI /*("EU")*/, + EGYPT /*("EU")*/, + EQUATORIAL_GUINEA /*("EU")*/, + ERITREA /*("EU")*/, + ESTONIA /*("EU")*/, + ETHIOPIA /*("EU")*/, + FAEROE_ISLANDS /*("EU")*/, + FINLAND /*("EU")*/, + FRANCE /*("EU")*/, + FRENCH_GUIANA /*("EU")*/, + GABON /*("EU")*/, + GAMBIA /*("EU")*/, + GEORGIA /*("EU")*/, + GERMANY /*("EU")*/, + GHANA /*("EU")*/, + GIBRALTAR /*("EU")*/, + GREAT_BRITAIN /*("EU")*/, + GREECE /*("EU")*/, + GREENLAND /*("EU")*/, + GUINEA /*("EU")*/, + GUINEA_BISSAU /*("EU")*/, + GUYANA /*("EU")*/, + HUNGARY /*("EU")*/, + ICELAND /*("EU")*/, + IRAN /*("EU")*/, + IRAQ /*("EU")*/, + IRELAND /*("EU")*/, + ISLE_OF_MAN /*("EU")*/, + ISRAEL /*("EU")*/, + ITALY /*("EU")*/, + IVORY_COAST /*("EU")*/, + JERSEY /*("EU")*/, + JORDAN /*("EU")*/, + KAZAKHSTAN /*("EU")*/, + KENYA /*("EU")*/, + KUWAIT /*("EU")*/, + KYRGYZSTAN /*("EU")*/, + LATVIA /*("EU")*/, + LEBANON /*("EU")*/, + LESOTHO /*("EU")*/, + LIBERIA /*("EU")*/, + LIBYA /*("EU")*/, + LIECHTENSTEIN /*("EU")*/, + LITHUANIA /*("EU")*/, + LUXEMBOURG /*("EU")*/, + MACEDONIA /*("EU")*/, + MADAGASCAR /*("EU")*/, + MALAWI /*("EU")*/, + MALDIVES /*("EU")*/, + MALI /*("EU")*/, + MALTA /*("EU")*/, + MARSHALL_ISLAND /*("EU")*/, + MAURITANIA /*("EU")*/, + MAURITIUS /*("EU")*/, + MAYOTTE /*("EU")*/, + MOLDOVA /*("EU")*/, + MONACO /*("EU")*/, + MOROCCO /*("EU")*/, + MOZAMBIQUE /*("EU")*/, + NAMIBIA /*("EU")*/, + NETHERLANDS /*("EU")*/, + NIGER_REPUBLIC /*("EU")*/, + NIGERIA /*("EU")*/, + NORWAY /*("EU")*/, + OMAN /*("EU")*/, + PALESTINE /*("EU")*/, + POLAND /*("EU")*/, + PORTUGAL /*("EU")*/, + QATAR /*("EU")*/, + REUNION /*("EU")*/, + ROMANIA /*("EU")*/, + RUSSIA /*("EU")*/, + RWANDA /*("EU")*/, + SAN_MARINO /*("EU")*/, + SAO_TOME /*("EU")*/, + SAUDI_ARABIA /*("EU")*/, + SENEGAL /*("EU")*/, + SERBIA /*("EU")*/, + SEYCHELLES /*("EU")*/, + SEIRRA_LEONE /*("EU")*/, + SLOVAKIA /*("EU")*/, + SLOVENIA /*("EU")*/, + SOMALIA /*("EU")*/, + SOUTH_AFRICA /*("EU")*/, + SPAIN /*("EU")*/, + ST_HELENA /*("EU")*/, + SUDAN /*("EU")*/, + SURINAME /*("EU")*/, + SVALBARD /*("EU")*/, + SWAZILAND /*("EU")*/, + SWEDEN /*("EU")*/, + SWITZERLAND /*("EU")*/, + SYRIA /*("EU")*/, + TAJIKSTAN /*("EU")*/, + TANZANIA /*("EU")*/, + TOGO /*("EU")*/, + TUNISIA /*("EU")*/, + TURKEY /*("EU")*/, + TURKMENISTAN /*("EU")*/, + UAE /*("EU")*/, + UGANDA /*("EU")*/, + UKRAINE /*("EU")*/, + UZBEKISTAN /*("EU")*/, + VATICAN_CITY /*("EU")*/, + WESTERN_SAHARA /*("EU")*/, + YEMEN /*("EU")*/, + ZAMBIA /*("EU")*/, + ZIMBABWE /*("EU")*/; + +}
\ No newline at end of file diff --git a/test/files/pos/t6942/t6942.scala b/test/files/pos/t6942/t6942.scala new file mode 100644 index 0000000000..77963d2634 --- /dev/null +++ b/test/files/pos/t6942/t6942.scala @@ -0,0 +1,64 @@ +// not a peep out of the pattern matcher's unreachability analysis +// its budget should suffice for these simple matches (they do have a large search space) +class Test { + import foo.Bar // a large enum + def exhaustUnreachabilitysStack_ENUM_STYLE = (null: Bar) match { + case Bar.BULGARIA => + case _ => + } + + // lots of strings + def exhaustUnreachabilitysStack_StringStyle = "foo" match { + case "a" => + case "b" => + case "c" => + case "d" => + case "e" => + case "f" => + case "aa" => + case "ba" => + case "ca" => + case "da" => + case "ea" => + case "f1a" => + case "a1a" => + case "b1a" => + case "c1a" => + case "d1a" => + case "e1a" => + case "f1a2" => + case "f1a0" => + case "a1a2" => + case "b1a2" => + case "c1a2" => + case "d1a2" => + case "e1a2" => + case "f1a3" => + case "_a" => + case "_b" => + case "_c" => + case "_d" => + case "_e" => + case "_f" => + case "_aa" => + case "_ba" => + case "_ca" => + case "_da" => + case "_ea" => + case "_f1a" => + case "_a1a" => + case "_b1a" => + case "_c1a" => + case "_d1a" => + case "_e1a" => + case "_f1a0" => + case "_f1a2" => + case "_a1a2" => + case "_b1a2" => + case "_c1a2" => + case "_d1a2" => + case "_e1a2" => + case "_f1a3" => + case _ => + } +} diff --git a/test/files/pos/t6976/Exts_1.scala b/test/files/pos/t6976/Exts_1.scala new file mode 100644 index 0000000000..9b3a69edd9 --- /dev/null +++ b/test/files/pos/t6976/Exts_1.scala @@ -0,0 +1,10 @@ +object Exts { + implicit class AnyExts[T](val o: T) extends AnyVal { + def moo = "moo!" + } +} + +trait Exts { + import language.implicitConversions + implicit def AnyExts[T](o: T) = Exts.AnyExts(o) +} diff --git a/test/files/pos/t6976/ImplicitBug_1.scala b/test/files/pos/t6976/ImplicitBug_1.scala new file mode 100644 index 0000000000..c9031bab2e --- /dev/null +++ b/test/files/pos/t6976/ImplicitBug_1.scala @@ -0,0 +1,27 @@ +// This one is weird and nasty. Not sure if this is scalac or sbt +// (tried with 0.12 & 0.12.2-RC2) bug. +// +// A level of indirection is required to trigger this bug. +// Exts seems to need to be defined in separate file. +// +// Steps to reproduce: +// 1. sbt clean +// 2. sbt run (it works) +// 3. Comment A & uncomment B. +// 4. sbt run (it fails) +// 5. Switch it back & sbt run. It still fails. +// +// In this project sbt clean helps. However in a large project where this +// bug was found compiler crashed even after doing sbt clean. The only +// way to work around this was to reference Exts object explicitly (C) in +// the source file using its implicit classes. + +// Lets suppose this is a mega-trait combining all sorts of helper +// functionality. +trait Support extends Exts + +object ImplicitsBug extends App with Support { // A +// object ImplicitsBug extends App with Exts { // B + //Exts // C) this reference helped in the large project. + println(3.moo) +} diff --git a/test/files/pos/t6976/ImplicitBug_2.scala b/test/files/pos/t6976/ImplicitBug_2.scala new file mode 100644 index 0000000000..2fea5e2993 --- /dev/null +++ b/test/files/pos/t6976/ImplicitBug_2.scala @@ -0,0 +1,7 @@ +trait Support extends Exts + +// object ImplicitsBug extends App with Support { // A +object ImplicitsBug extends App with Exts { // B + //Exts // C) this reference helped in the large project. + println(3.moo) +} diff --git a/test/files/pos/t6994.flags b/test/files/pos/t6994.flags new file mode 100644 index 0000000000..e8fb65d50c --- /dev/null +++ b/test/files/pos/t6994.flags @@ -0,0 +1 @@ +-Xfatal-warnings
\ No newline at end of file diff --git a/test/files/pos/t6994.scala b/test/files/pos/t6994.scala new file mode 100644 index 0000000000..d707196423 --- /dev/null +++ b/test/files/pos/t6994.scala @@ -0,0 +1,8 @@ +object Test { + object NF { + def unapply(t: Throwable): Option[Throwable] = None + } + val x = (try { None } catch { case NF(ex) => None }) getOrElse 0 + // Was emitting a spurious warning post typer: + // "This catches all Throwables. If this is really intended, use `case ex6 : Throwable` to clear this warning." +} diff --git a/test/files/run/reify_magicsymbols.check b/test/files/run/reify_magicsymbols.check index e2aa46a364..c9d892d793 100644 --- a/test/files/run/reify_magicsymbols.check +++ b/test/files/run/reify_magicsymbols.check @@ -10,4 +10,4 @@ List[Null] List[Nothing] AnyRef{def foo(x: Int): Int} Int* => Unit -=> Int => Unit +(=> Int) => Unit diff --git a/test/files/run/t6011c.scala b/test/files/run/t6011c.scala new file mode 100644 index 0000000000..0647e3f81a --- /dev/null +++ b/test/files/run/t6011c.scala @@ -0,0 +1,13 @@ +object Test extends App { + // A variation of SI-6011, which eluded the fix + // in 2.10.0. + // + // duplicate keys in SWITCH, can't pick arbitrarily one of them to evict, see SI-6011. + // at scala.reflect.internal.SymbolTable.abort(SymbolTable.scala:50) + // at scala.tools.nsc.Global.abort(Global.scala:249) + // at scala.tools.nsc.backend.jvm.GenASM$JPlainBuilder$jcode$.emitSWITCH(GenASM.scala:1850) + ((1: Byte): @unchecked @annotation.switch) match { + case 1 => 2 + case 1 => 3 // crash + } +} diff --git a/test/files/run/t6434.check b/test/files/run/t6434.check new file mode 100644 index 0000000000..f898b6b781 --- /dev/null +++ b/test/files/run/t6434.check @@ -0,0 +1,10 @@ +Type in expressions to have them evaluated. +Type :help for more information. + +scala> def f(x: => Int): Int = x +f: (x: => Int)Int + +scala> f _ +res0: (=> Int) => Int = <function1> + +scala> diff --git a/test/files/run/t6434.scala b/test/files/run/t6434.scala new file mode 100644 index 0000000000..e4a4579613 --- /dev/null +++ b/test/files/run/t6434.scala @@ -0,0 +1,8 @@ +import scala.tools.partest.ReplTest + +object Test extends ReplTest { + def code = +"""def f(x: => Int): Int = x +f _ +""" +} diff --git a/test/files/run/t6439.check b/test/files/run/t6439.check new file mode 100644 index 0000000000..178ea739f5 --- /dev/null +++ b/test/files/run/t6439.check @@ -0,0 +1,66 @@ +Type in expressions to have them evaluated. +Type :help for more information. + +scala> + +scala> class A +defined class A + +scala> object A // warn +defined module A +warning: previously defined class A is not a companion to object A. +Companions must be defined together; you may wish to use :paste mode for this. + +scala> trait B +defined trait B + +scala> object B // warn +defined module B +warning: previously defined trait B is not a companion to object B. +Companions must be defined together; you may wish to use :paste mode for this. + +scala> object C +defined module C + +scala> object Bippy +defined module Bippy + +scala> class C // warn +defined class C +warning: previously defined object C is not a companion to class C. +Companions must be defined together; you may wish to use :paste mode for this. + +scala> class D +defined class D + +scala> def D = 0 // no warn +D: Int + +scala> val D = 0 // no warn +D: Int = 0 + +scala> object E +defined module E + +scala> var E = 0 // no warn +E: Int = 0 + +scala> object F +defined module F + +scala> type F = Int // no warn +defined type alias F + +scala> :power +** Power User mode enabled - BEEP WHIR GYVE ** +** :phase has been set to 'typer'. ** +** scala.tools.nsc._ has been imported ** +** global._, definitions._ also imported ** +** Try :help, :vals, power.<tab> ** + +scala> intp("F") // this now works as a result of changing .typeSymbol to .typeSymbolDirect in IMain#Request#definedSymbols +res0: $r.intp.global.Symbol = type F + +scala> + +scala> diff --git a/test/files/run/t6439.scala b/test/files/run/t6439.scala new file mode 100644 index 0000000000..70a2dbafaf --- /dev/null +++ b/test/files/run/t6439.scala @@ -0,0 +1,22 @@ +import scala.tools.partest.ReplTest + +object Test extends ReplTest { + def code = """ +class A +object A // warn +trait B +object B // warn +object C +object Bippy +class C // warn +class D +def D = 0 // no warn +val D = 0 // no warn +object E +var E = 0 // no warn +object F +type F = Int // no warn +:power +intp("F") // this now works as a result of changing .typeSymbol to .typeSymbolDirect in IMain#Request#definedSymbols + """ +} diff --git a/test/files/run/t6611.scala b/test/files/run/t6611.scala new file mode 100644 index 0000000000..0947a48f90 --- /dev/null +++ b/test/files/run/t6611.scala @@ -0,0 +1,61 @@ +object Test extends App { + locally { + val a = Array("1") + val a2 = Array(a: _*) + assert(a ne a2) + } + + locally { + val a = Array("1": Object) + val a2 = Array[Object](a: _*) + assert(a ne a2) + } + + locally { + val a = Array(true) + val a2 = Array[Boolean](a: _*) + assert(a ne a2) + } + + locally { + val a = Array(1: Short) + val a2 = Array[Short](a: _*) + assert(a ne a2) + } + + locally { + val a = Array(1: Byte) + val a2 = Array[Byte](a: _*) + assert(a ne a2) + } + + locally { + val a = Array(1) + val a2 = Array[Int](a: _*) + assert(a ne a2) + } + + locally { + val a = Array(1L) + val a2 = Array[Long](a: _*) + assert(a ne a2) + } + + locally { + val a = Array(1f) + val a2 = Array[Float](a: _*) + assert(a ne a2) + } + + locally { + val a = Array(1d) + val a2 = Array[Double](a: _*) + assert(a ne a2) + } + + locally { + val a = Array(()) + val a2 = Array[Unit](a: _*) + assert(a ne a2) + } +} diff --git a/test/files/run/t6637.check b/test/files/run/t6637.check new file mode 100644 index 0000000000..9766475a41 --- /dev/null +++ b/test/files/run/t6637.check @@ -0,0 +1 @@ +ok diff --git a/test/files/run/t6637.scala b/test/files/run/t6637.scala new file mode 100644 index 0000000000..d3c380370b --- /dev/null +++ b/test/files/run/t6637.scala @@ -0,0 +1,8 @@ + +object Test extends App { + try { + class A ; class B ; List().head.isInstanceOf[A with B] + } catch { + case _ :java.util.NoSuchElementException => println("ok") + } +} diff --git a/test/files/run/t6969.check b/test/files/run/t6969.check new file mode 100644 index 0000000000..78297812c9 --- /dev/null +++ b/test/files/run/t6969.check @@ -0,0 +1 @@ +All threads completed. diff --git a/test/files/run/t6969.scala b/test/files/run/t6969.scala new file mode 100644 index 0000000000..8cfc28c1e5 --- /dev/null +++ b/test/files/run/t6969.scala @@ -0,0 +1,28 @@ +object Test { + private type Clearable = { def clear(): Unit } + private def choke() = { + try new Array[Object]((Runtime.getRuntime().maxMemory min Int.MaxValue).toInt) + catch { + case _: OutOfMemoryError => // what do you mean, out of memory? + case t: Throwable => println(t) + } + } + private def f(x: Clearable) = x.clear() + class Choker(id: Int) extends Thread { + private def g(iteration: Int) = { + val map = scala.collection.mutable.Map[Int, Int](1 -> 2) + try f(map) catch { case t: NullPointerException => println(s"Failed at $id/$iteration") ; throw t } + choke() + } + override def run() { + 1 to 50 foreach g + } + } + + def main(args: Array[String]): Unit = { + val threads = 1 to 3 map (id => new Choker(id)) + threads foreach (_.start()) + threads foreach (_.join()) + println("All threads completed.") + } +} diff --git a/test/files/run/t6987.check b/test/files/run/t6987.check new file mode 100644 index 0000000000..86fc96c679 --- /dev/null +++ b/test/files/run/t6987.check @@ -0,0 +1 @@ +got successful verbose results! diff --git a/test/files/run/t6987.scala b/test/files/run/t6987.scala new file mode 100644 index 0000000000..37e91d61ae --- /dev/null +++ b/test/files/run/t6987.scala @@ -0,0 +1,43 @@ +import java.io._ +import tools.nsc.{CompileClient, CompileServer} +import java.util.concurrent.{CountDownLatch, TimeUnit} + +object Test extends App { + val startupLatch = new CountDownLatch(1) + // we have to explicitly launch our server because when the client launches a server it uses + // the "scala" shell command meaning whatever version of scala (and whatever version of libraries) + // happens to be in the path gets used + val t = new Thread(new Runnable { + def run() = { + CompileServer.execute(() => startupLatch.countDown(), Array[String]()) + } + }) + t setDaemon true + t.start() + if (!startupLatch.await(2, TimeUnit.MINUTES)) + sys error "Timeout waiting for server to start" + + val baos = new ByteArrayOutputStream() + val ps = new PrintStream(baos) + + val success = (scala.Console withOut ps) { + // shut down the server via the client using the verbose flag + CompileClient.process(Array("-shutdown", "-verbose")) + } + + // now make sure we got success and a verbose result + val msg = baos.toString() + + if (success) { + if (msg contains "Settings after normalizing paths") { + println("got successful verbose results!") + } else { + println("did not get the string expected, full results were:") + println(msg) + } + } else { + println("got a failure. Full results were:") + println(msg) + } + scala.Console.flush +} diff --git a/test/partest b/test/partest index 8352f8a946..186c0d1580 100755 --- a/test/partest +++ b/test/partest @@ -77,7 +77,6 @@ fi # last arg wins, so if JAVA_OPTS already contains -Xmx or -Xms the # supplied argument will be used. JAVA_OPTS="-Xmx1024M -Xms64M $JAVA_OPTS" -[ -n "$SCALAC_OPTS" ] || SCALAC_OPTS="-deprecation" partestDebugStr="" if [ ! -z "${PARTEST_DEBUG}" ] ; then |