| // RUN: %clangxx_msan %s -o %t && not %run %t 2>&1 | FileCheck --check-prefix=ON %s |
| // RUN: %clangxx_msan %s -o %t && MSAN_OPTIONS=intercept_strndup=0 %run %t 2>&1 | FileCheck --check-prefix=OFF --allow-empty %s |
| |
| // When built as C on Linux, strndup is transformed to __strndup. |
| // RUN: %clangxx_msan -O3 -xc %s -o %t && not %run %t 2>&1 | FileCheck --check-prefix=ON %s |
| |
| // UNSUPPORTED: target={{.*windows-msvc.*}} |
| |
| #include <assert.h> |
| #include <stdlib.h> |
| #include <string.h> |
| #include <sanitizer/msan_interface.h> |
| |
| int main(int argc, char **argv) { |
| char kString[4] = "abc"; |
| __msan_poison(kString + 2, 1); |
| char *copy = strndup(kString, 4); // BOOM |
| assert(__msan_test_shadow(copy, 4) == 2); // Poisoning is preserved. |
| free(copy); |
| return 0; |
| // ON: Uninitialized bytes in __interceptor_{{(__)?}}strndup at offset 2 inside [{{.*}}, 4) |
| // ON: MemorySanitizer: use-of-uninitialized-value |
| // ON: #0 {{.*}}main {{.*}}strndup.cpp:[[@LINE-6]] |
| // ON-LABEL: SUMMARY |
| // ON: {{.*}}strndup.cpp:[[@LINE-8]] |
| // OFF-NOT: MemorySanitizer |
| } |
| |
