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