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