src/jemalloc/test/integration/overflow.c

   1 #include "test/jemalloc_test.h"
   2
   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
  44 main(void)
  45 {
  46
  47         return (test(
  48             test_overflow));
  49 }