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| author | Martin Odersky <odersky@gmail.com> | 2015-03-03 10:37:29 +0100 |
|---|---|---|
| committer | Dmitry Petrashko <dmitry.petrashko@gmail.com> | 2015-03-18 11:14:13 +0100 |
| commit | 6220d5c0a31d513cfcb28dba1df14176d527201d (patch) | |
| tree | 0ad91c8b3515102d87ba234905004c5ecfdc7dbd /src/dotty/tools/dotc/typer/Namer.scala | |
| parent | 6dc3d62d68d7135c055da9589456d27eee89de80 (diff) | |
| download | dotty-6220d5c0a31d513cfcb28dba1df14176d527201d.tar.gz dotty-6220d5c0a31d513cfcb28dba1df14176d527201d.tar.bz2 dotty-6220d5c0a31d513cfcb28dba1df14176d527201d.zip | |
Better tracking of unhygienic closure types
We have two unhygienic closures left - one in t1957.scala the other in Typer.scala.
This commit leaves some printlns that can be uncommented to get more info on these.
It would be better to fix them but I am running out of time to do so. Maybe someone
else can pick up with the info this commit allows to recover.
Diffstat (limited to 'src/dotty/tools/dotc/typer/Namer.scala')
| -rw-r--r-- | src/dotty/tools/dotc/typer/Namer.scala | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/src/dotty/tools/dotc/typer/Namer.scala b/src/dotty/tools/dotc/typer/Namer.scala index 8fe47582b..04f648c00 100644 --- a/src/dotty/tools/dotc/typer/Namer.scala +++ b/src/dotty/tools/dotc/typer/Namer.scala @@ -664,8 +664,11 @@ class Namer { typer: Typer => mdef match { case mdef: DefDef if mdef.name == nme.ANON_FUN => val hygienicType = avoid(rhsType, paramss.flatten) - hygienicType <:< tpt.tpe - typr.println(i"lifting $rhsType over $paramss -> $hygienicType = ${tpt.tpe}") + if (!(hygienicType <:< tpt.tpe)) + ctx.error(i"return type ${tpt.tpe} of lambda cannot be made hygienic;\n" + + i"it is not a supertype of the hygienic type $hygienicType", mdef.pos) + //println(i"lifting $rhsType over $paramss -> $hygienicType = ${tpt.tpe}") + //println(TypeComparer.explained { implicit ctx => hygienicType <:< tpt.tpe }) case _ => } WildcardType |