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3ad2cd5e70
This was failing on Mac (https://green.lab.llvm.org/job/llvm.org/job/clang-stage1-RA/4107/ and https://issues.chromium.org/issues/409995888). Since this is an experimental feature, rather than play whack-a-mole with selectively disabling failing platforms (previously done for Android), this patch restricts it to Linux.
45 lines
1.4 KiB
C++
45 lines
1.4 KiB
C++
// Check that __asan_poison_memory_region and ASAN_OPTIONS=poison_history_size work for partial granules.
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//
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// RUN: %clangxx_asan -O0 %s -o %t && env ASAN_OPTIONS=poison_history_size=1000 not %run %t 20 2>&1 | FileCheck %s
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//
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// Partial granule
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// RUN: %clangxx_asan -O0 %s -o %t && env ASAN_OPTIONS=poison_history_size=1000 not %run %t 2>&1 | FileCheck %s
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// TODO
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// REQUIRES: linux
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// UNSUPPORTED: android
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#include <stdio.h>
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#include <stdlib.h>
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extern "C" void __asan_poison_memory_region(void *, size_t);
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extern "C" void __asan_unpoison_memory_region(void *, size_t);
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void honey_ive_poisoned_the_memory(char *x) {
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__asan_poison_memory_region(x + 10, 20);
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}
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void foo(char *x) { honey_ive_poisoned_the_memory(x); }
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int main(int argc, char **argv) {
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char *x = new char[64];
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x[10] = 0;
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foo(x);
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// Bytes [0, 9]: addressable
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// Bytes [10, 31]: poisoned by A
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// Bytes [32, 63]: addressable
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int res = x[argc * 10]; // BOOOM
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// CHECK: ERROR: AddressSanitizer: use-after-poison
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// CHECK: main{{.*}}use-after-poison-history-size-partial-granule.cpp:[[@LINE-2]]
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// CHECK: Memory was manually poisoned by thread T0:
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// CHECK: honey_ive_poisoned_the_memory{{.*}}use-after-poison-history-size-partial-granule.cpp:[[@LINE-18]]
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// CHECK: foo{{.*}}use-after-poison-history-size-partial-granule.cpp:[[@LINE-16]]
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// CHECK: main{{.*}}use-after-poison-history-size-partial-granule.cpp:[[@LINE-12]]
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delete[] x;
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return 0;
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}
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