#2469: Linking fails with "multiple definition of `deRefStablePtr'"
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Reporter: meteficha | Owner: simonmar
Type: bug | Status: new
Priority: high | Milestone: 6.10.1
Component: Compiler (FFI) | Version: 6.8.2
Severity: normal | Resolution:
Keywords: linker ffi stableptr | Difficulty: Unknown
Testcase: | Architecture: Unknown
Os: Multiple |
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Changes (by simonmar):
* owner: => simonmar
Comment:
`deRefStablePtr` is defined like this:
{{{
#if defined(__GNUC__)
# ifndef RTS_STABLE_C
extern inline
# endif
StgPtr deRefStablePtr(StgStablePtr sp)
{
ASSERT(stable_ptr_table[(StgWord)sp].ref > 0);
return stable_ptr_table[(StgWord)sp].addr;
}
#else
/* No support for 'extern inline' */
extern StgPtr deRefStablePtr(StgStablePtr sp);
#endif
}}}
and `extern inline` is supposed to treat the definition as a macro; that
is, it never gets emitted into the object file, which is what we want.
This seems to be working correctly with the various gcc versions I have
here.
What gcc versions are installed on the boxes that fail?
--
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/2469#comment:4>
GHC <http://www.haskell.org/ghc/>
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