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| author | David Terei <davidterei@gmail.com> | 2011-07-20 11:09:03 -0700 |
|---|---|---|
| committer | David Terei <davidterei@gmail.com> | 2011-07-20 11:26:35 -0700 |
| commit | 16514f272fb42af6e9c7674a9bd6c9dce369231f (patch) | |
| tree | e4f332b45fe65e2a7a2451be5674f887b42bf199 /testsuite/tests/codeGen/should_run/Cgrun067A.hs | |
| parent | ebd422aed41048476aa61dd4c520d43becd78682 (diff) | |
| download | haskell-16514f272fb42af6e9c7674a9bd6c9dce369231f.tar.gz | |
Move tests from tests/ghc-regress/* to just tests/*
Diffstat (limited to 'testsuite/tests/codeGen/should_run/Cgrun067A.hs')
| -rw-r--r-- | testsuite/tests/codeGen/should_run/Cgrun067A.hs | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/testsuite/tests/codeGen/should_run/Cgrun067A.hs b/testsuite/tests/codeGen/should_run/Cgrun067A.hs new file mode 100644 index 0000000000..96e944ed25 --- /dev/null +++ b/testsuite/tests/codeGen/should_run/Cgrun067A.hs @@ -0,0 +1,16 @@ +-- Bug doesn't show up on -O0 +{-# OPTIONS_GHC -O #-} +module Cgrun067A (miscompiledFn) where + +import Foreign.C +import Foreign + +miscompiledFn :: CString -> IO String +miscompiledFn cp = do + l <- lengthArray0 0 cp + if l <= 0 then return "" else loop "" (l-1) + where + loop s i = do + xval <- peekElemOff cp i + let val = castCCharToChar xval + val `seq` if i <= 0 then return (val:s) else loop (val:s) (i-1) |