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1 #include "test/jemalloc_test.h"
2 
TEST_BEGIN(test_overflow)3 TEST_BEGIN(test_overflow)
4 {
5 	unsigned nhchunks;
6 	size_t mib[4];
7 	size_t sz, miblen, max_size_class;
8 	void *p;
9 
10 	sz = sizeof(unsigned);
11 	assert_d_eq(mallctl("arenas.nhchunks", &nhchunks, &sz, NULL, 0), 0,
12 	    "Unexpected mallctl() error");
13 
14 	miblen = sizeof(mib) / sizeof(size_t);
15 	assert_d_eq(mallctlnametomib("arenas.hchunk.0.size", mib, &miblen), 0,
16 	    "Unexpected mallctlnametomib() error");
17 	mib[2] = nhchunks - 1;
18 
19 	sz = sizeof(size_t);
20 	assert_d_eq(mallctlbymib(mib, miblen, &max_size_class, &sz, NULL, 0), 0,
21 	    "Unexpected mallctlbymib() error");
22 
23 	assert_ptr_null(malloc(max_size_class + 1),
24 	    "Expected OOM due to over-sized allocation request");
25 	assert_ptr_null(malloc(SIZE_T_MAX),
26 	    "Expected OOM due to over-sized allocation request");
27 
28 	assert_ptr_null(calloc(1, max_size_class + 1),
29 	    "Expected OOM due to over-sized allocation request");
30 	assert_ptr_null(calloc(1, SIZE_T_MAX),
31 	    "Expected OOM due to over-sized allocation request");
32 
33 	p = malloc(1);
34 	assert_ptr_not_null(p, "Unexpected malloc() OOM");
35 	assert_ptr_null(realloc(p, max_size_class + 1),
36 	    "Expected OOM due to over-sized allocation request");
37 	assert_ptr_null(realloc(p, SIZE_T_MAX),
38 	    "Expected OOM due to over-sized allocation request");
39 	free(p);
40 }
41 TEST_END
42 
43 int
main(void)44 main(void)
45 {
46 
47 	return (test(
48 	    test_overflow));
49 }
50