forked from OSchip/llvm-project
62 lines
1.7 KiB
C++
62 lines
1.7 KiB
C++
// 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
|