gcc/libmudflap/testsuite/libmudflap.c/pass51-frag.c
Frank Ch. Eigler ddfabf89bb configure.ac: Check for more headers, functions.
2004-10-12  Frank Ch. Eigler  <fche@redhat.com>

	* configure.ac: Check for more headers, functions.
	* mf-hooks2.c (mkbuffer, unmkbuffer): New helper functions for
	tracking overridden FILE buffers.
	(fopen, setvbuf): New/revised hook functions for buffer overriding.
	(setbuf,setlinebuf,fdopen,freopen,fopen64,freopen64,fclose): Ditto.
	(fflush): Accept given NULL stream (means "all streams").
	* mf-runtime.h.in:
	* mf-runtime.c (__mfu_check): Accept accesses that span adjacent
	HEAP/GUESS objects.
	(LOOKUP_CACHE_SIZE_MAX): Raise to 64K entries tentatively.
	(__mf_adapt_cache): Use them all.
	* testsuite/libmudflap.c/pass35-frag.c: Update warning message.
	* testsuite/libmudflap.c++/ctors.exp: Ditto.
	* testsuite/libmudflap.c/{pass51,pass52}-frag.c: New tests.
	* configure, config.h.in: Regenerated.

From-SVN: r88996
2004-10-13 18:27:16 +00:00

42 lines
835 B
C

/* Test object-spanning accesses. This is most conveniently done with
mmap, thus the config.h specificity here. */
#include "../config.h"
#include <unistd.h>
#include <string.h>
#ifdef HAVE_SYS_MMAN_H
#include <sys/mman.h>
#endif
int main ()
{
#ifndef MAP_ANONYMOUS
#define MAP_ANONYMOUS MAP_ANON
#endif
#ifdef HAVE_MMAP
void *p;
unsigned pg = getpagesize ();
int rc;
p = mmap (NULL, 4 * pg, PROT_READ|PROT_WRITE,
MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);
if (p == NULL)
return 1;
memset (p, 0, 4*pg);
rc = munmap (p, pg);
if (rc < 0) return 1;
memset (p+pg, 0, 3*pg);
rc = munmap (p+pg, pg);
if (rc < 0) return 1;
memset (p+2*pg, 0, 2*pg);
rc = munmap (p+2*pg, pg);
if (rc < 0) return 1;
memset (p+3*pg, 0, pg);
rc = munmap (p+3*pg, pg);
if (rc < 0) return 1;
#endif
return 0;
}