35 lines
1.5 KiB
C++
35 lines
1.5 KiB
C++
// RUN: %clangxx_msan -O0 %s -o %t && not %run %t >%t.out 2>&1
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// RUN: FileCheck %s < %t.out
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// RUN: %clangxx_msan -O1 %s -o %t && not %run %t >%t.out 2>&1
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// RUN: FileCheck %s < %t.out
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// RUN: %clangxx_msan -O2 %s -o %t && not %run %t >%t.out 2>&1
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// RUN: FileCheck %s < %t.out
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// RUN: %clangxx_msan -O3 %s -o %t && not %run %t >%t.out 2>&1
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// RUN: FileCheck %s < %t.out
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// RUN: %clangxx_msan -fsanitize-memory-track-origins -O0 %s -o %t && not %run %t >%t.out 2>&1
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// RUN: FileCheck %s < %t.out && FileCheck %s --check-prefix=CHECK-ORIGINS < %t.out
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// RUN: %clangxx_msan -fsanitize-memory-track-origins -O1 %s -o %t && not %run %t >%t.out 2>&1
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// RUN: FileCheck %s < %t.out && FileCheck %s --check-prefix=CHECK-ORIGINS < %t.out
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// RUN: %clangxx_msan -fsanitize-memory-track-origins -O2 %s -o %t && not %run %t >%t.out 2>&1
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// RUN: FileCheck %s < %t.out && FileCheck %s --check-prefix=CHECK-ORIGINS < %t.out
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// RUN: %clangxx_msan -fsanitize-memory-track-origins -O3 %s -o %t && not %run %t >%t.out 2>&1
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// RUN: FileCheck %s < %t.out && FileCheck %s --check-prefix=CHECK-ORIGINS < %t.out
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#include <stdlib.h>
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int main(int argc, char **argv) {
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int *volatile p = (int *)malloc(sizeof(int));
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*p = 42;
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free(p);
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if (*p)
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exit(0);
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// CHECK: WARNING: MemorySanitizer: use-of-uninitialized-value
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// CHECK: {{#0 0x.* in main .*use-after-free.cpp:}}[[@LINE-3]]
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// CHECK-ORIGINS: Uninitialized value was created by a heap deallocation
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// CHECK-ORIGINS: {{#0 0x.* in .*free}}
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// CHECK-ORIGINS: {{#1 0x.* in main .*use-after-free.cpp:}}[[@LINE-9]]
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return 0;
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}
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