d937b0a10c
Summary: Initially, Scudo had a monolithic design where both C and C++ functions were living in the same library. This was not necessarily ideal, and with the work on -fsanitize=scudo, it became more apparent that this needed to change. We are splitting the new/delete interceptor in their own C++ library. This allows more flexibility, notably with regard to std::bad_alloc when the work is done. This also allows us to not link new & delete when using pure C. Additionally, we add the UBSan runtimes with Scudo, in order to be able to have a -fsanitize=scudo,undefined in Clang (see work in D39334). The changes in this patch: - split the cxx specific code in the scudo cmake file into a new library; (remove the spurious foreach loop, that was not necessary) - add the UBSan runtimes (both C and C++); - change the test cmake file to allow for specific C & C++ tests; - make C tests pure C, rename their extension accordingly. Reviewers: alekseyshl Reviewed By: alekseyshl Subscribers: srhines, mgorny, llvm-commits Differential Revision: https://reviews.llvm.org/D39461 llvm-svn: 317097
74 lines
2.5 KiB
C++
74 lines
2.5 KiB
C++
// RUN: %clangxx_scudo %s -lstdc++ -o %t
|
|
// RUN: %env_scudo_opts=allocator_may_return_null=0 not %run %t malloc 2>&1 | FileCheck %s
|
|
// RUN: %env_scudo_opts=allocator_may_return_null=1 %run %t malloc 2>&1
|
|
// RUN: %env_scudo_opts=allocator_may_return_null=0 not %run %t calloc 2>&1 | FileCheck %s
|
|
// RUN: %env_scudo_opts=allocator_may_return_null=1 %run %t calloc 2>&1
|
|
// RUN: %env_scudo_opts=allocator_may_return_null=0 not %run %t new 2>&1 | FileCheck %s
|
|
// RUN: %env_scudo_opts=allocator_may_return_null=1 not %run %t new 2>&1 | FileCheck %s
|
|
// RUN: %env_scudo_opts=allocator_may_return_null=0 not %run %t new-nothrow 2>&1 | FileCheck %s
|
|
// RUN: %env_scudo_opts=allocator_may_return_null=1 %run %t new-nothrow 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>
|
|
|
|
int main(int argc, char **argv) {
|
|
assert(argc == 2);
|
|
const char *action = argv[1];
|
|
fprintf(stderr, "%s:\n", action);
|
|
|
|
#if __LP64__ || defined(_WIN64)
|
|
static const size_t kMaxAllowedMallocSize = 1ULL << 40;
|
|
static const size_t kChunkHeaderSize = 16;
|
|
#else
|
|
static const size_t kMaxAllowedMallocSize = 2UL << 30;
|
|
static const size_t kChunkHeaderSize = 8;
|
|
#endif
|
|
|
|
if (!strcmp(action, "malloc")) {
|
|
void *p = malloc(kMaxAllowedMallocSize);
|
|
assert(!p);
|
|
p = malloc(kMaxAllowedMallocSize - kChunkHeaderSize);
|
|
assert(!p);
|
|
} else if (!strcmp(action, "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(action, "new")) {
|
|
void *p = operator new(kMaxAllowedMallocSize);
|
|
assert(!p);
|
|
} else if (!strcmp(action, "new-nothrow")) {
|
|
void *p = operator new(kMaxAllowedMallocSize, std::nothrow);
|
|
assert(!p);
|
|
} else if (!strcmp(action, "usable")) {
|
|
// Playing with the actual usable size of a chunk.
|
|
void *p = malloc(1007);
|
|
assert(p);
|
|
size_t size = malloc_usable_size(p);
|
|
assert(size >= 1007);
|
|
memset(p, 'A', size);
|
|
p = realloc(p, 2014);
|
|
assert(p);
|
|
size = malloc_usable_size(p);
|
|
assert(size >= 2014);
|
|
memset(p, 'B', size);
|
|
free(p);
|
|
} else {
|
|
assert(0);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
// CHECK: allocator is terminating the process
|