#3605: Dll's freeze with -threaded
-----------------------------+----------------------------------------------
Reporter: NeilMitchell | Owner:
Type: bug | Status: new
Priority: normal | Component: Compiler
Version: 6.12.1 RC1 | Severity: normal
Keywords: | Testcase:
Os: Unknown/Multiple | Architecture: Unknown/Multiple
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Attached are two source files (one .c, one .hs), which are compiled (using
mk.sh) into DsoHsDemo.dll. When this library is loaded, using the
following C snippet:
{{{
int main(int argc, char* argv[])
{
printf("Started LoadLibrary\n");
LoadLibrary("DsoHsDemo.dll");
printf("Finished LoadLibrary\n");
}
}}}
The program freezes:
{{{
$ ./mk.sh && ./CSnippet
The Glorious Glasgow Haskell Compilation System, version 6.12.0.20091010
Creating library file: DsoHsDemo.dll.a
Started LoadLibrary
pre hs_init
<program freezes>
}}}
The freeze only occurs when the dll is linked with -threaded, and happens
within either startupHaskell, or (if you call hs_init/hs_add_root instead)
within hs_add_root. This happens with GHC 6.10.4 and 6.12rc1 on Windows
XP.
This bug appears to make it impossible to successfully build a DLL for
multithreaded use.
--
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/3605>
GHC <http://www.haskell.org/ghc/>
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