SI-6426, importable _.

[backport]
Prohibit `_` as an identifier, it can only bring badness.

2 files changed, 6 insertions, 6 deletions

diff --git a/src/compiler/scala/tools/nsc/ast/parser/Parsers.scala b/src/compiler/scala/tools/nsc/ast/parser/Parsers.scala
index 33db4ee2d5..c508e14343 100644
--- a/src/compiler/scala/tools/nsc/ast/parser/Parsers.scala
+++ b/src/compiler/scala/tools/nsc/ast/parser/Parsers.scala
@@ -980,11 +980,8 @@ self =>
 
     /** Assumed (provisionally) to be TermNames. */
     def ident(skipIt: Boolean): Name =
-      if (isIdent) {
-        val name = in.name.encode
-        in.nextToken()
-        name
-      } else {
+      if (isIdent) rawIdent().encode
+      else {
         syntaxErrorOrIncomplete(expectedMsg(IDENTIFIER), skipIt)
         nme.ERROR
       }
diff --git a/src/compiler/scala/tools/nsc/ast/parser/Scanners.scala b/src/compiler/scala/tools/nsc/ast/parser/Scanners.scala
index 4f564c5d0b..45df318e40 100644
--- a/src/compiler/scala/tools/nsc/ast/parser/Scanners.scala
+++ b/src/compiler/scala/tools/nsc/ast/parser/Scanners.scala
@@ -607,7 +607,10 @@ trait Scanners extends ScannersCommon {
       if (ch == '`') {
         nextChar()
         finishNamed(BACKQUOTED_IDENT)
-        if (name.length == 0) syntaxError("empty quoted identifier")
+        if (name.length == 0)
+          syntaxError("empty quoted identifier")
+        else if (name == nme.WILDCARD)
+          syntaxError("wildcard invalid as backquoted identifier")
       }
       else syntaxError("unclosed quoted identifier")
     }