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#include <stdlib.h>
#include <limits.h>
#include <stdio.h>
#ifndef GC_IGNORE_WARN
/* Ignore misleading "Out of Memory!" warning (which is printed on */
/* every GC_MALLOC call below) by defining this macro before "gc.h" */
/* inclusion. */
# define GC_IGNORE_WARN
#endif
#ifndef GC_MAXIMUM_HEAP_SIZE
# define GC_MAXIMUM_HEAP_SIZE (100 * 1024 * 1024)
# define GC_INITIAL_HEAP_SIZE (GC_MAXIMUM_HEAP_SIZE / 20)
/* Otherwise heap expansion aborts when deallocating large block. */
/* That's OK. We test this corner case mostly to make sure that */
/* it fails predictably. */
#endif
#ifndef GC_ATTR_ALLOC_SIZE
/* Omit alloc_size attribute to avoid compiler warnings about */
/* exceeding maximum object size when values close to GC_SWORD_MAX */
/* are passed to GC_MALLOC. */
# define GC_ATTR_ALLOC_SIZE(argnum) /* empty */
#endif
#include "gc.h"
/*
* Check that very large allocation requests fail. "Success" would usually
* indicate that the size was somehow converted to a negative
* number. Clients shouldn't do this, but we should fail in the
* expected manner.
*/
#define CHECK_ALLOC_FAILED(r, sz_str) \
do { \
if (NULL != (r)) { \
fprintf(stderr, \
"Size " sz_str " allocation unexpectedly succeeded\n"); \
exit(1); \
} \
} while (0)
#define GC_WORD_MAX ((GC_word)-1)
#define GC_SWORD_MAX ((GC_signed_word)(GC_WORD_MAX >> 1))
int main(void)
{
GC_INIT();
CHECK_ALLOC_FAILED(GC_MALLOC(GC_SWORD_MAX - 1024), "SWORD_MAX-1024");
CHECK_ALLOC_FAILED(GC_MALLOC(GC_SWORD_MAX), "SWORD_MAX");
/* Skip other checks to avoid "exceeds maximum object size" gcc warning. */
# if !defined(_FORTIFY_SOURCE)
CHECK_ALLOC_FAILED(GC_MALLOC((GC_word)GC_SWORD_MAX + 1), "SWORD_MAX+1");
CHECK_ALLOC_FAILED(GC_MALLOC((GC_word)GC_SWORD_MAX + 1024),
"SWORD_MAX+1024");
CHECK_ALLOC_FAILED(GC_MALLOC(GC_WORD_MAX - 1024), "WORD_MAX-1024");
CHECK_ALLOC_FAILED(GC_MALLOC(GC_WORD_MAX - 16), "WORD_MAX-16");
CHECK_ALLOC_FAILED(GC_MALLOC(GC_WORD_MAX - 8), "WORD_MAX-8");
CHECK_ALLOC_FAILED(GC_MALLOC(GC_WORD_MAX - 4), "WORD_MAX-4");
CHECK_ALLOC_FAILED(GC_MALLOC(GC_WORD_MAX), "WORD_MAX");
# endif
return 0;
}
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