Re: alloca redeclaration warning on MinGW

[Hrvoje Niksic]

Stepan Kasal writes:

> > #if HAVE_ALLOCA_H
> > # include <alloca.h>
> > #elif defined __GNUC__
> > # define alloca __builtin_alloca
> > 
> > The problem is that MinGW is using GNU C, but also #defines alloca to
> > __builtin_alloca in malloc.h, presumably to be compatible with MS VC.
> 
> what about the following patch?
[...]

Won't make a difference because alloca is defined in malloc.h, which
(along with other system includes) is included after config.h, not
before.  I'm now using this:

#if HAVE_ALLOCA_H
# include <alloca.h>
#elif defined _MSC_VER || defined __BORLANDC__ || defined __MINGW32__
# include <malloc.h>
#elif defined __GNUC__
# define alloca __builtin_alloca
#elif defined _AIX
# define alloca __alloca
#else
# include <stddef.h>
# ifdef  __cplusplus
extern "C"
# endif
void *alloca (size_t);
#endif