Compiler panic on invalid syntax (unterminated pragma)
The following minimal example causes a compiler panic.
{-# OPTIONS_GHC -O1 }
"
#-}
ghc-stage2.exe: panic! (the 'impossible' happened)
(GHC version 8.5.20180413 for x86_64-unknown-mingw32):
getOptions'.parseToks: Couldn't read "\r\n\"\r\n " as String
Please report this as a GHC bug: http://www.haskell.org/ghc/reportabug
Happens in HEAD and 8.2.2 at least. Double quotes seem to confuse the parser. Also panics if there are two doublequotes.
Trac metadata
Trac field | Value |
---|---|
Version | 8.2.2 |
Type | Bug |
TypeOfFailure | OtherFailure |
Priority | normal |
Resolution | Unresolved |
Component | Compiler (Parser) |
Test case | |
Differential revisions | |
BlockedBy | |
Related | |
Blocking | |
CC | |
Operating system | |
Architecture |