4adf24502e
Summary: The current `FailureHandler` mechanism was fairly opaque with regard to the failure reason due to using `CHECK(0)`. Scudo is a bit different from the other Sanitizers as it prefers to avoid spurious processing in its failure path. So we just `dieWithMessage` using a somewhat explicit string. Adapted the tests for the new strings. While this takes care of the `OnBadRequest` & `OnOOM` failures, the next step is probably to migrate the other Scudo failures in the same failes (header corruption, invalid state and so on). Reviewers: alekseyshl Reviewed By: alekseyshl Subscribers: filcab, mgorny, delcypher, #sanitizers, llvm-commits Differential Revision: https://reviews.llvm.org/D48199 llvm-svn: 334843
76 lines
2.8 KiB
C++
76 lines
2.8 KiB
C++
// RUN: %clangxx_scudo %s -lstdc++ -o %t
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// RUN: %env_scudo_opts=allocator_may_return_null=0 not %run %t malloc 2>&1 | FileCheck %s --check-prefix=CHECK-max
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// RUN: %env_scudo_opts=allocator_may_return_null=1 %run %t malloc 2>&1
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// RUN: %env_scudo_opts=allocator_may_return_null=0 not %run %t calloc 2>&1 | FileCheck %s --check-prefix=CHECK-calloc
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// RUN: %env_scudo_opts=allocator_may_return_null=1 %run %t calloc 2>&1
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// RUN: %env_scudo_opts=allocator_may_return_null=0 not %run %t new 2>&1 | FileCheck %s --check-prefix=CHECK-max
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// RUN: %env_scudo_opts=allocator_may_return_null=1 not %run %t new 2>&1 | FileCheck %s --check-prefix=CHECK-oom
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// RUN: %env_scudo_opts=allocator_may_return_null=0 not %run %t new-nothrow 2>&1 | FileCheck %s --check-prefix=CHECK-max
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// RUN: %env_scudo_opts=allocator_may_return_null=1 %run %t new-nothrow 2>&1
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// RUN: %run %t usable 2>&1
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// Tests for various edge cases related to sizes, notably the maximum size the
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// allocator can allocate. Tests that an integer overflow in the parameters of
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// calloc is caught.
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#include <assert.h>
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#include <malloc.h>
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#include <stdlib.h>
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#include <string.h>
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#include <limits>
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#include <new>
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#include <sanitizer/allocator_interface.h>
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int main(int argc, char **argv) {
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assert(argc == 2);
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#if __LP64__ || defined(_WIN64)
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static const size_t kMaxAllowedMallocSize = 1ULL << 40;
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static const size_t kChunkHeaderSize = 16;
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#else
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static const size_t kMaxAllowedMallocSize = 2UL << 30;
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static const size_t kChunkHeaderSize = 8;
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#endif
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if (!strcmp(argv[1], "malloc")) {
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void *p = malloc(kMaxAllowedMallocSize);
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assert(!p);
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p = malloc(kMaxAllowedMallocSize - kChunkHeaderSize);
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assert(!p);
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} else if (!strcmp(argv[1], "calloc")) {
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// Trigger an overflow in calloc.
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size_t size = std::numeric_limits<size_t>::max();
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void *p = calloc((size / 0x1000) + 1, 0x1000);
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assert(!p);
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} else if (!strcmp(argv[1], "new")) {
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void *p = operator new(kMaxAllowedMallocSize);
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assert(!p);
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} else if (!strcmp(argv[1], "new-nothrow")) {
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void *p = operator new(kMaxAllowedMallocSize, std::nothrow);
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assert(!p);
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} else if (!strcmp(argv[1], "usable")) {
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// Playing with the actual usable size of a chunk.
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void *p = malloc(1007);
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assert(p);
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size_t size = __sanitizer_get_allocated_size(p);
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assert(size >= 1007);
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memset(p, 'A', size);
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p = realloc(p, 2014);
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assert(p);
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size = __sanitizer_get_allocated_size(p);
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assert(size >= 2014);
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memset(p, 'B', size);
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free(p);
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} else {
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assert(0);
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}
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return 0;
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}
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// CHECK-max: {{Scudo ERROR: requested allocation size .* exceeds maximum supported size}}
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// CHECK-oom: Scudo ERROR: allocator is out of memory
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// CHECK-calloc: Scudo ERROR: calloc parameters overflow
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