-O flag produces faulty code
The -O flag generates incorrect code in both 6.8.2 and 6.9.
I tested it myself on 6.8.2 - The -O flag causes the program to enter a 100% CPU endless loop
Heffalump also tested it on 6.9 - The -O flag causes it to segfault
Attached is a tgz file containing the code (and the input).
ghc --make -o obk Main.hs ; obk -> works
ghc --make -o obk -O Main.hs ; obk -> fails
Trac metadata
Trac field | Value |
---|---|
Version | 6.9 |
Type | Bug |
TypeOfFailure | OtherFailure |
Priority | normal |
Resolution | Unresolved |
Component | Compiler |
Test case | |
Differential revisions | |
BlockedBy | |
Related | |
Blocking | |
CC | |
Operating system | Unknown |
Architecture | Unknown |