diff options
Diffstat (limited to 'lib/msan/lit_tests/poison_in_free.cc')
-rw-r--r-- | lib/msan/lit_tests/poison_in_free.cc | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/lib/msan/lit_tests/poison_in_free.cc b/lib/msan/lit_tests/poison_in_free.cc new file mode 100644 index 000000000000..f134d05abb1e --- /dev/null +++ b/lib/msan/lit_tests/poison_in_free.cc @@ -0,0 +1,16 @@ +// RUN: %clangxx_msan -O0 %s -o %t && not %t >%t.out 2>&1 +// FileCheck %s <%t.out +// RUN: %clangxx_msan -O0 %s -o %t && MSAN_OPTIONS=poison_in_free=0 %t >%t.out 2>&1 + +#include <stdio.h> +#include <stdlib.h> +#include <string.h> + +int main(int argc, char **argv) { + char *volatile x = (char*)malloc(50 * sizeof(char)); + memset(x, 0, 50); + free(x); + return x[25]; + // CHECK: MemorySanitizer: use-of-uninitialized-value + // CHECK: #0 {{.*}} in main{{.*}}poison_in_free.cc:[[@LINE-2]] +} |