Function acl_default_realloc

lib_acl/src/stdlib/memory/acl_default_malloc.c:251–321

/* acl_default_realloc - reallocate memory or bust */

void *acl_default_realloc(const char *filename, int line,
	void *ptr, size_t len)
{
	const char *myname = "acl_default_realloc";
	MBLOCK *real_ptr;
	size_t old_len, new_len;
	const char *pname = NULL;

	if (filename && *filename) {
		SET_FILE(pname, filename);
	} else {
		pname = __FILENAME_UNKNOWN;
	}

#ifndef NO_SHARED_EMPTY_STRINGS
	if (ptr == empty_string) {
		return acl_default_malloc(pname, line, len);
	}
#endif

	if (len < 1) {
		acl_msg_warn("%s(%d)->%s: realloc: requested length %ld",
			pname, line, myname, (long) len);
		acl_trace_info();
		len = 128;
	}

	if (ptr == NULL) {
		return acl_default_malloc(pname, line, len);
	}

	CHECK_IN_PTR(ptr, real_ptr, old_len, pname, line);

	new_len = SPACE_FOR(len);
	if (new_len <= 0) {
		acl_msg_fatal("%s(%d): new_len(%d) <= 0",
			myname, __LINE__, (int) new_len);
	} else if (new_len >= __malloc_limit) {
		acl_msg_warn("%s(%d): new_len(%d) too large",
			myname, __LINE__, (int) new_len);
		acl_trace_info();
	}

#ifdef 	DEBUG_MEM
	if (ptr)
		__nrealloc++;
	else
		__nmalloc++;
	__nsize += len;
	__nsize -= old_len;
#endif

#ifdef	_USE_GLIB
	if ((real_ptr = (MBLOCK *) g_realloc((char *) real_ptr, new_len)) == 0) {
		acl_msg_fatal("%s(%d)->%s: realloc: insufficient memory: %s",
			pname, line, myname, strerror(errno));
	}
#else