#5921: Two GHC linkers running in parallel on Windows goes wrong
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Reporter: NeilMitchell | Owner:
Type: bug | Status: new
Priority: normal | Milestone:
Component: Compiler | Version: 7.4.1
Keywords: | Os: Windows
Architecture: Unknown/Multiple | Failure: Compile-time crash
Difficulty: Unknown | Testcase:
Blockedby: | Blocking:
Related: |
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Changes (by simonmar):
* difficulty: => Unknown
Comment:
This is slightly amusing. It turns out the script has a bug:
"-o2/Main.exe" is wrong, it should be "-o 2/Main.exe". Why isn't there an
error about an unrecognised flag? Well, GHC passes anything that looks
like a filename along to the linker, and it decided that "-o2/Main.exe"
looked like a filename because it contains ".". You might expect `gcc` to
complain about "-o2/Main.exe", but it appears to ignore it (it's probably
a valid flag, I haven't trawled the gcc man page). The upshot is that the
command appears to work, but produces "Main.exe" instead of "2/Main.exe".
I'll change GHC to not pass args beginning with "-" to the linker and emit
an error instead.
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Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/5921#comment:2>
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