| // RUN: %clangxx_msan -O0 %s -o %t && %run %t |
| |
| // Check that strlen() and similar intercepted functions can be called on shadow |
| // memory. |
| |
| #include <assert.h> |
| #include <stdint.h> |
| #include <stdio.h> |
| #include <string.h> |
| |
| const char *mem_to_shadow(const char *p) { |
| #if defined(__x86_64__) |
| return (char *)((uintptr_t)p & ~0x400000000000ULL); |
| #elif defined (__mips64) |
| return (char *)((uintptr_t)p & ~0x4000000000ULL); |
| #endif |
| } |
| |
| int main(void) { |
| const char *s = "abcdef"; |
| assert(strlen(s) == 6); |
| assert(strlen(mem_to_shadow(s)) == 0); |
| |
| char *t = new char[42]; |
| t[41] = 0; |
| assert(strlen(mem_to_shadow(t)) == 41); |
| return 0; |
| } |