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Diffstat (limited to 'test/hwasan/TestCases/sizes.cpp')
-rw-r--r-- | test/hwasan/TestCases/sizes.cpp | 80 |
1 files changed, 80 insertions, 0 deletions
diff --git a/test/hwasan/TestCases/sizes.cpp b/test/hwasan/TestCases/sizes.cpp new file mode 100644 index 000000000..52217de74 --- /dev/null +++ b/test/hwasan/TestCases/sizes.cpp @@ -0,0 +1,80 @@ +// RUN: %clangxx_hwasan %s -lstdc++ -o %t +// RUN: %env_hwasan_opts=allocator_may_return_null=0 not %run %t malloc 2>&1 | FileCheck %s --check-prefix=CHECK-max +// RUN: %env_hwasan_opts=allocator_may_return_null=1 %run %t malloc 2>&1 +// RUN: %env_hwasan_opts=allocator_may_return_null=0 not %run %t malloc max 2>&1 | FileCheck %s --check-prefix=CHECK-max +// RUN: %env_hwasan_opts=allocator_may_return_null=1 %run %t malloc max 2>&1 +// RUN: %env_hwasan_opts=allocator_may_return_null=0 not %run %t calloc 2>&1 | FileCheck %s --check-prefix=CHECK-calloc +// RUN: %env_hwasan_opts=allocator_may_return_null=1 %run %t calloc 2>&1 +// RUN: %env_hwasan_opts=allocator_may_return_null=0 not %run %t new 2>&1 | FileCheck %s --check-prefix=CHECK-max +// RUN: %env_hwasan_opts=allocator_may_return_null=1 not %run %t new 2>&1 | FileCheck %s --check-prefix=CHECK-oom +// RUN: %env_hwasan_opts=allocator_may_return_null=0 not %run %t new max 2>&1 | FileCheck %s --check-prefix=CHECK-max +// RUN: %env_hwasan_opts=allocator_may_return_null=1 not %run %t new max 2>&1 | FileCheck %s --check-prefix=CHECK-oom +// RUN: %env_hwasan_opts=allocator_may_return_null=0 not %run %t new-nothrow 2>&1 | FileCheck %s --check-prefix=CHECK-max +// RUN: %env_hwasan_opts=allocator_may_return_null=1 %run %t new-nothrow 2>&1 +// RUN: %env_hwasan_opts=allocator_may_return_null=0 not %run %t new-nothrow max 2>&1 | FileCheck %s --check-prefix=CHECK-max +// RUN: %env_hwasan_opts=allocator_may_return_null=1 %run %t new-nothrow max 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> +#include <new> + +#include <sanitizer/allocator_interface.h> + +int main(int argc, char **argv) { + assert(argc <= 3); + bool test_size_max = argc == 3 && !strcmp(argv[2], "max"); + + static const size_t kMaxAllowedMallocSize = 1ULL << 40; + static const size_t kChunkHeaderSize = 16; + + size_t MallocSize = test_size_max ? std::numeric_limits<size_t>::max() + : kMaxAllowedMallocSize; + + if (!strcmp(argv[1], "malloc")) { + void *p = malloc(MallocSize); + assert(!p); + p = malloc(kMaxAllowedMallocSize - kChunkHeaderSize); + assert(!p); + } else 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); + assert(!p); + } else if (!strcmp(argv[1], "new")) { + void *p = operator new(MallocSize); + assert(!p); + } else if (!strcmp(argv[1], "new-nothrow")) { + void *p = operator new(MallocSize, std::nothrow); + assert(!p); + } else if (!strcmp(argv[1], "usable")) { + // Playing with the actual usable size of a chunk. + void *p = malloc(1007); + assert(p); + size_t size = __sanitizer_get_allocated_size(p); + assert(size >= 1007); + memset(p, 'A', size); + p = realloc(p, 2014); + assert(p); + size = __sanitizer_get_allocated_size(p); + assert(size >= 2014); + memset(p, 'B', size); + free(p); + } else { + assert(0); + } + + return 0; +} + +// CHECK-max: {{ERROR: HWAddressSanitizer: requested allocation size .* exceeds maximum supported size}} +// CHECK-oom: ERROR: HWAddressSanitizer: allocator is out of memory +// CHECK-calloc: ERROR: HWAddressSanitizer: calloc parameters overflow |