Assume C89 or later.

* configure.in (AC_C_PROTOTYPES, AC_C_VOLATILE, AC_C_CONST)
(POINTER_TYPE, PROTOTYPES): Remove.
* admin/CPP-DEFINES: Remove NULL, const.
* lib-src/etags.c (static, const): Remove macros.
(PTR): Remove; all uses replaced with void *.  Omit needless casts.
* src/alloc.c, src/buffer.c, lisp.h: Replace POINTER_TYPE with void.
* alloc.c (overrun_check_malloc, overrun_check_realloc, xmalloc)
(xrealloc):
* buffer.c (mmap_free_1, mmap_enlarge): Omit needless casts.
* editfns.c, fns.c, gmalloc.c, insdel.c, sysdep.c, termcap.c (NULL):
* textprop.c, tparam.c (NULL): Remove.
* ralloc.c, vm-limit.c (POINTER): Assume void * works.
* regex.c (SIGN_EXTEND_CHAR): Assume signed char works.
* regex.h (_RE_ARGS): Remove.  All uses rewritten to use prototypes.
* unexelf.c (ElfBitsW): Assume c89 preprocessor or better.
* xterm.c (input_signal_count): Assume volatile works.

1 files changed, 4 insertions, 4 deletions

diff --git a/src/lisp.h b/src/lisp.h
index 6376862949a..fd5219adf4c 100644
--- a/src/lisp.h
+++ b/src/lisp.h
@@ -2780,7 +2780,7 @@ extern int pos_visible_p (struct window *, EMACS_INT, int *,
 extern void syms_of_xsettings (void);
 
 /* Defined in vm-limit.c.  */
-extern void memory_warnings (POINTER_TYPE *, void (*warnfun) (const char *));
+extern void memory_warnings (void *, void (*warnfun) (const char *));
 
 /* Defined in alloc.c */
 extern void check_pure_size (void);
@@ -3597,9 +3597,9 @@ extern int initialized;
 
 extern int immediate_quit;          /* Nonzero means ^G can quit instantly */
 
-extern POINTER_TYPE *xmalloc (size_t);
-extern POINTER_TYPE *xrealloc (POINTER_TYPE *, size_t);
-extern void xfree (POINTER_TYPE *);
+extern void *xmalloc (size_t);
+extern void *xrealloc (void *, size_t);
+extern void xfree (void *);
 extern void *xnmalloc (ptrdiff_t, ptrdiff_t);
 extern void *xnrealloc (void *, ptrdiff_t, ptrdiff_t);
 extern void *xpalloc (void *, ptrdiff_t *, ptrdiff_t, ptrdiff_t, ptrdiff_t);