[PATCH] D54113: [sanitizer] Use AT_EXECFN in ReExec() if available

[Benjamin Kramer via Phabricator via llvm-commits]

bkramer added inline comments.


================
Comment at: test/msan/Linux/reexec_unlimited_stack.cc:16
+int main() {
+#if __GLIBC_PREREQ(2, 16)
+  puts(reinterpret_cast<const char *>(getauxval(AT_EXECFN)));
----------------
vitalybuka wrote:
> How this test triggers changed code?
The idea is that the `ulimit -s unlimited` makes msan re-exec on startup. Currently this overwrites AT_EXECFN with `/proc/self/exe`. With this change it's preserved.


Repository:
  rCRT Compiler Runtime

https://reviews.llvm.org/D54113