[compiler-rt] [asan] Flush stderr/stdout in tests (PR #114084)
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Tue Oct 29 09:34:58 PDT 2024
llvmbot wrote:
<!--LLVM PR SUMMARY COMMENT-->
@llvm/pr-subscribers-compiler-rt-sanitizer
Author: Thurston Dang (thurstond)
<details>
<summary>Changes</summary>
This is the ASan equivalent of https://github.com/llvm/llvm-project/pull/114083.
The x86_64_lam_qemu buildbots started failing
(https://lab.llvm.org/buildbot/#/builders/139/builds/5462/steps/2/logs/stdio). Based on the logs, it appears the ASan check is correct but it did not match the stderr/stdout output. This patch attempts to fix the issue by flushing stderr/stdout as appropriate.
---
Full diff: https://github.com/llvm/llvm-project/pull/114084.diff
1 Files Affected:
- (modified) compiler-rt/test/asan/TestCases/Posix/ignore_free_hook.cpp (+4-1)
``````````diff
diff --git a/compiler-rt/test/asan/TestCases/Posix/ignore_free_hook.cpp b/compiler-rt/test/asan/TestCases/Posix/ignore_free_hook.cpp
index 87be90014d56e8..dfeb8ad5c7b53f 100644
--- a/compiler-rt/test/asan/TestCases/Posix/ignore_free_hook.cpp
+++ b/compiler-rt/test/asan/TestCases/Posix/ignore_free_hook.cpp
@@ -26,14 +26,17 @@ bool ignore_free = false;
extern "C" {
WEAK_ON_APPLE void __sanitizer_free_hook(const volatile void *ptr) {
- if (ptr == glob_ptr)
+ if (ptr == glob_ptr) {
fprintf(stderr, "Free Hook\n");
+ fflush(stderr);
+ }
}
WEAK_ON_APPLE int __sanitizer_ignore_free_hook(const volatile void *ptr) {
if (ptr != glob_ptr)
return 0;
fprintf(stderr, ignore_free ? "Free Ignored\n" : "Free Respected\n");
+ fflush(stderr);
return ignore_free;
}
} // extern "C"
``````````
</details>
https://github.com/llvm/llvm-project/pull/114084
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