| 1 | // MSAN re-execs on unlimited stacks. We use that to verify ReExec() uses the |
|---|---|
| 2 | // right path. |
| 3 | // REQUIRES: shell |
| 4 | // RUN: %clangxx_msan -O0 %s -o %t && ulimit -s unlimited && %run %t | FileCheck %s |
| 5 | |
| 6 | #include <stdio.h> |
| 7 | |
| 8 | #if !defined(__GLIBC_PREREQ) |
| 9 | #define __GLIBC_PREREQ(a, b) 0 |
| 10 | #endif |
| 11 | |
| 12 | #if __GLIBC_PREREQ(2, 16) |
| 13 | #include <sys/auxv.h> |
| 14 | #endif |
| 15 | |
| 16 | int main() { |
| 17 | #if __GLIBC_PREREQ(2, 16) |
| 18 | // Make sure AT_EXECFN didn't get overwritten by re-exec. |
| 19 | puts(s: reinterpret_cast<const char *>(getauxval(AT_EXECFN))); |
| 20 | #else |
| 21 | puts("No getauxval"); |
| 22 | #endif |
| 23 | // CHECK-NOT: /proc/self/exe |
| 24 | } |
| 25 |