Clean up the fix for unexec build on GNU/Linux

* src/conf_post.h [HYBRID_MALLOC || DARWIN_OS && HAVE_UNEXEC]:
Include <stdlib.h> here, before redirecting 'malloc' and friends
to their hybrid_* and unexec_* equivalents.  #undef malloc and
friends before redefining.  Provide prototypes for the
replacements.  Suggested by Paul Eggert <eggert@cs.ucla.edu>.
* src/gmalloc.c [HYBRID_MALLOC]: Remove declarations of 'malloc'
and friends, as they are now redundant: we include <stdlib.h> in
conf_post.h before redefining 'malloc' etc., and that provides
prototypes from system headers.

* configure.ac (HYBRID_MALLOC): Remove kludge to avoid replacement
of 'free' by Gnulib.  (Bug#36649)

1 files changed, 0 insertions, 10 deletions

diff --git a/src/gmalloc.c b/src/gmalloc.c
index 66008ea69b2..dedd25fa22f 100644
--- a/src/gmalloc.c
+++ b/src/gmalloc.c
@@ -1690,16 +1690,6 @@ valloc (size_t size)
 #undef free
 
 #ifdef HYBRID_MALLOC
-/* Declare system malloc and friends.  */
-extern void *malloc (size_t size);
-extern void *realloc (void *ptr, size_t size);
-extern void *calloc (size_t nmemb, size_t size);
-extern void free (void *ptr);
-#ifdef HAVE_ALIGNED_ALLOC
-extern void *aligned_alloc (size_t alignment, size_t size);
-#elif defined HAVE_POSIX_MEMALIGN
-extern int posix_memalign (void **memptr, size_t alignment, size_t size);
-#endif
 
 /* Assuming PTR was allocated via the hybrid malloc, return true if
    PTR was allocated via gmalloc, not the system malloc.  Also, return