76 lines · cpp
1// RUN: %clangxx_scudo %s -lstdc++ -o %t2// RUN: %env_scudo_opts=allocator_may_return_null=0 not %run %t malloc 2>&1 | FileCheck %s --check-prefix=CHECK-max3// RUN: %env_scudo_opts=allocator_may_return_null=1 %run %t malloc 2>&14// RUN: %env_scudo_opts=allocator_may_return_null=0 not %run %t calloc 2>&1 | FileCheck %s --check-prefix=CHECK-calloc5// RUN: %env_scudo_opts=allocator_may_return_null=1 %run %t calloc 2>&16// RUN: %env_scudo_opts=allocator_may_return_null=0 not %run %t new 2>&1 | FileCheck %s --check-prefix=CHECK-max7// RUN: %env_scudo_opts=allocator_may_return_null=1 not %run %t new 2>&1 | FileCheck %s --check-prefix=CHECK-oom8// RUN: %env_scudo_opts=allocator_may_return_null=0 not %run %t new-nothrow 2>&1 | FileCheck %s --check-prefix=CHECK-max9// RUN: %env_scudo_opts=allocator_may_return_null=1 %run %t new-nothrow 2>&110// RUN: %run %t usable 2>&111 12// Tests for various edge cases related to sizes, notably the maximum size the13// allocator can allocate. Tests that an integer overflow in the parameters of14// calloc is caught.15 16#include <assert.h>17#include <malloc.h>18#include <stdlib.h>19#include <string.h>20 21#include <limits>22#include <new>23 24#include <sanitizer/allocator_interface.h>25 26int main(int argc, char **argv) {27 assert(argc == 2);28 29#if __LP64__ || defined(_WIN64)30 static const size_t kMaxAllowedMallocSize = 1ULL << 40;31 static const size_t kChunkHeaderSize = 16;32#else33 static const size_t kMaxAllowedMallocSize = 2UL << 30;34 static const size_t kChunkHeaderSize = 8;35#endif36 37 if (!strcmp(argv[1], "malloc")) {38 void *p = malloc(kMaxAllowedMallocSize);39 assert(!p);40 p = malloc(kMaxAllowedMallocSize - kChunkHeaderSize);41 assert(!p);42 } else if (!strcmp(argv[1], "calloc")) {43 // Trigger an overflow in calloc.44 size_t size = std::numeric_limits<size_t>::max();45 void *p = calloc((size / 0x1000) + 1, 0x1000);46 assert(!p);47 } else if (!strcmp(argv[1], "new")) {48 void *p = operator new(kMaxAllowedMallocSize);49 assert(!p);50 } else if (!strcmp(argv[1], "new-nothrow")) {51 void *p = operator new(kMaxAllowedMallocSize, std::nothrow);52 assert(!p);53 } else if (!strcmp(argv[1], "usable")) {54 // Playing with the actual usable size of a chunk.55 void *p = malloc(1007);56 assert(p);57 size_t size = __sanitizer_get_allocated_size(p);58 assert(size >= 1007);59 memset(p, 'A', size);60 p = realloc(p, 2014);61 assert(p);62 size = __sanitizer_get_allocated_size(p);63 assert(size >= 2014);64 memset(p, 'B', size);65 free(p);66 } else {67 assert(0);68 }69 70 return 0;71}72 73// CHECK-max: {{Scudo ERROR: requested allocation size .* exceeds maximum supported size}}74// CHECK-oom: Scudo ERROR: allocator is out of memory75// CHECK-calloc: Scudo ERROR: calloc parameters overflow76