Re: [Mingw-users] mingw gcc-3.2.3: multiple definition of `strcasecmp'

[<dan...@ya...>]

Thanks Greg,  I thinke we  need to poison "extern __inline__" throughout
the mingw headers because it will cause even more bugs when C99 standard
interpretation of "extern inline" is enforced rather than the current
GNUC extension meaning.  "static inline" is much safer and stanadrd.  

I wonder why this has triggered a bug before.

Danny


 --- Greg Chicares <chi...@mi...> wrote: > Test case below produces multiple
definition of this symbol.
> There's probably a similar problem with strncasecmp().
> 
> Is this just a cockpit error, e.g. because I've incorrectly
> patched the 3.2.3 prerelease? If not...
> 
> Should this be fixed by removing the __inline__ definitions?
> Is a formal sf.net bug report desired?
> 
> *** Analysis:
> 
> strcasecmp() is defined in the 'oldname' libraries:
> 
>   C:/MinGW/lib[0]$nm --print-file-name lib*.a |grep strcasecmp
>   libbfd.a:archures.o:         U _strcasecmp
>   libcoldname.a:string_old.o:00000000 T _strcasecmp
>   libmoldname.a:string_old.o:00000000 T _strcasecmp
>   libmoldnamed.a:string_old.o:00000000 T _strcasecmp
> 
> but it's defined inline too:
> 
> include/string.h
> 
>   /*
>    * Non-underscored versions of non-ANSI functions. They live in liboldnames.a
>    * and provide a little extra portability. Also a few extra UNIX-isms like
>    * strcasecmp.
>    */
>   [...]
>   extern __inline__ int __cdecl
>   strcasecmp (const char * __sz1, const char * __sz2)
>     {return _stricmp (__sz1, __sz2);}
> 
> *** Test case:
> 
>   /* foo.cpp */
>   int foo();
>   int main()
>   {
>     return foo();
>   }
> 
>   /* lib_foo.cpp */
>   #include <bfd.h>
>   #include <string.h>
>   int foo()
>   {
>     bfd_hash_table_free(0);  // force link to libbfd.a
>     return strcasecmp(0, 0); // don't run this--just demonstrate link error
>   }
> 
> C:/tmp[0]$g++ -c lib_foo.cpp
> C:/tmp[0]$ar ruv libfoo.a lib_foo.o
> a - lib_foo.o
> C:/tmp[0]$ranlib libfoo.a
> C:/tmp[0]$g++ foo.cpp -L. -lfoo -lbfd -liberty
> /MinGW/bin/../lib/gcc-lib/mingw32/3.2.3/../../../libmoldname.a(string_old.o)(.te
> xt+0x0):string_old.c: multiple definition of `strcasecmp'
> ./libfoo.a(lib_foo.o)(.text$strcasecmp+0x0):lib_foo.cpp: first defined here
> C:/tmp[1]$
> 
> 
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