derek.holloway
7502bf64a4
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32 lines
1.3 KiB
C++
32 lines
1.3 KiB
C++
// RUN: %clangxx_asan -O0 %s -o %t 2>&1
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// RUN: not %run %t 2>&1 | FileCheck %s --check-prefix=CHECK --check-prefix=MALLOC-CTX
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// Also works if no malloc context is available.
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// RUN: %env_asan_opts=malloc_context_size=0:fast_unwind_on_malloc=0 not %run %t 2>&1 | FileCheck %s
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// RUN: %env_asan_opts=malloc_context_size=0:fast_unwind_on_malloc=1 not %run %t 2>&1 | FileCheck %s
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// RUN: %clangxx_asan -O0 -fsanitize-recover=address %s -o %t 2>&1
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// RUN: %env_asan_opts=halt_on_error=false %run %t 2>&1 | FileCheck %s --check-prefix CHECK-RECOVER
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// REQUIRES: stable-runtime
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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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char *x = (char*)malloc(10 * sizeof(char));
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memset(x, 0, 10);
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int res = x[argc];
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free(x);
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free(x + argc - 1); // BOOM
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// CHECK: AddressSanitizer: attempting double-free{{.*}}in thread T0
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// CHECK: #0 0x{{.*}} in {{.*}}free
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// CHECK: #{{[1-3]}} 0x{{.*}} in main {{.*}}double-free.cpp:[[@LINE-3]]
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// CHECK: freed by thread T0 here:
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// MALLOC-CTX: #0 0x{{.*}} in {{.*}}free
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// MALLOC-CTX: #{{[1-3]}} 0x{{.*}} in main {{.*}}double-free.cpp:[[@LINE-7]]
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// CHECK: allocated by thread T0 here:
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// MALLOC-CTX: double-free.cpp:[[@LINE-12]]
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// CHECK-RECOVER: AddressSanitizer: attempting double-free{{.*}}in thread T0
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// CHECK-RECOVER-NOT: AddressSanitizer CHECK failed:
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return res;
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}
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