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// RUN: %clang_scudo %s -o %t
// RUN: SCUDO_OPTIONS=allocator_may_return_null=0 not %run %t malloc 2>&1 | FileCheck %s
// RUN: SCUDO_OPTIONS=allocator_may_return_null=1 %run %t malloc 2>&1
// RUN: SCUDO_OPTIONS=allocator_may_return_null=0 not %run %t calloc 2>&1 | FileCheck %s
// RUN: SCUDO_OPTIONS=allocator_may_return_null=1 %run %t calloc 2>&1
// RUN: %run %t usable 2>&1
// Tests for various edge cases related to sizes, notably the maximum size the
// allocator can allocate. Tests that an integer overflow in the parameters of
// calloc is caught.
#include <assert.h>
#include <malloc.h>
#include <stdlib.h>
#include <string.h>
#include <limits>
int main(int argc, char **argv)
{
assert(argc == 2);
if (!strcmp(argv[1], "malloc")) {
// Currently the maximum size the allocator can allocate is 1ULL<<40 bytes.
size_t size = std::numeric_limits<size_t>::max();
void *p = malloc(size);
if (p)
return 1;
size = (1ULL << 40) - 16;
p = malloc(size);
if (p)
return 1;
}
if (!strcmp(argv[1], "calloc")) {
// Trigger an overflow in calloc.
size_t size = std::numeric_limits<size_t>::max();
void *p = calloc((size / 0x1000) + 1, 0x1000);
if (p)
return 1;
}
if (!strcmp(argv[1], "usable")) {
// Playing with the actual usable size of a chunk.
void *p = malloc(1007);
if (!p)
return 1;
size_t size = malloc_usable_size(p);
if (size < 1007)
return 1;
memset(p, 'A', size);
p = realloc(p, 2014);
if (!p)
return 1;
size = malloc_usable_size(p);
if (size < 2014)
return 1;
memset(p, 'B', size);
free(p);
}
return 0;
}
// CHECK: allocator is terminating the process
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