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
40 lines
1.0 KiB
C
40 lines
1.0 KiB
C
// RUN: %clang_scudo %s -o %t
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// RUN: not %run %t malloc 2>&1 | FileCheck %s
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// RUN: %env_scudo_opts=QuarantineSizeKb=64 not %run %t quarantine 2>&1 | FileCheck %s
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// Tests that header corruption of an allocated or quarantined chunk is caught.
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#include <assert.h>
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#include <stdlib.h>
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#include <string.h>
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int main(int argc, char **argv)
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{
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ssize_t offset = sizeof(void *) == 8 ? 8 : 0;
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assert(argc == 2);
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if (!strcmp(argv[1], "malloc")) {
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// Simulate a header corruption of an allocated chunk (1-bit)
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void *p = malloc(1U << 4);
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assert(p);
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((char *)p)[-(offset + 1)] ^= 1;
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free(p);
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}
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if (!strcmp(argv[1], "quarantine")) {
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void *p = malloc(1U << 4);
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assert(p);
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free(p);
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// Simulate a header corruption of a quarantined chunk
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((char *)p)[-(offset + 2)] ^= 1;
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// Trigger the quarantine recycle
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for (int i = 0; i < 0x100; i++) {
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p = malloc(1U << 8);
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free(p);
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}
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}
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return 0;
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}
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// CHECK: ERROR: corrupted chunk header at address
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