[compiler-rt] r304744 - [ASan] A speculative attempt to fix a flaky test on ppc64be.

[Alex Shlyapnikov via llvm-commits]

Author: alekseyshl
Date: Mon Jun  5 17:23:15 2017
New Revision: 304744

URL: http://llvm.org/viewvc/llvm-project?rev=304744&view=rev
Log:
[ASan] A speculative attempt to fix a flaky test on ppc64be.

Summary:
As mentioned in test/msan/fork.cc, if test output is redirected to a file
(as opposed to being piped directly to FileCheck), we may lose some "done"s due to
a kernel bug: https://lkml.org/lkml/2014/2/17/324, so let's pipe the
output of the test.

Reviewers: eugenis

Subscribers: llvm-commits, kubamracek

Differential Revision: https://reviews.llvm.org/D33915

Modified:
    compiler-rt/trunk/test/asan/TestCases/Posix/halt_on_error-torture.cc

Modified: compiler-rt/trunk/test/asan/TestCases/Posix/halt_on_error-torture.cc
URL: http://llvm.org/viewvc/llvm-project/compiler-rt/trunk/test/asan/TestCases/Posix/halt_on_error-torture.cc?rev=304744&r1=304743&r2=304744&view=diff
==============================================================================
--- compiler-rt/trunk/test/asan/TestCases/Posix/halt_on_error-torture.cc (original)
+++ compiler-rt/trunk/test/asan/TestCases/Posix/halt_on_error-torture.cc Mon Jun  5 17:23:15 2017
@@ -10,12 +10,12 @@
 //
 // Collisions are unlikely but still possible so we need the ||.
 // RUN: rm -f 10.txt
-// RUN: %env_asan_opts=halt_on_error=false:suppress_equal_pcs=false:exitcode=0 %run %t 10 20 >>10.txt 2>&1
+// RUN: %env_asan_opts=halt_on_error=false:suppress_equal_pcs=false:exitcode=0 %run %t 10 20 2>&1 | cat > 10.txt
 // RUN: FileCheck --check-prefix=CHECK-COLLISION %s < 10.txt || FileCheck --check-prefix=CHECK-NO-COLLISION %s < 10.txt
 //
 // Collisions are unlikely but still possible so we need the ||.
 // RUN: rm -f 20.txt
-// RUN: %env_asan_opts=halt_on_error=false:exitcode=0 %run %t 10 20 >>20.txt 2>&1
+// RUN: %env_asan_opts=halt_on_error=false:exitcode=0 %run %t 10 20 2>&1 | cat > 20.txt
 // RUN: FileCheck --check-prefix=CHECK-COLLISION %s < 20.txt || FileCheck --check-prefix=CHECK-NO-COLLISION %s < 20.txt
 
 #include <stdio.h>
@@ -38,7 +38,7 @@ void *run(void *arg) {
   unsigned seed = (unsigned)(size_t)arg;
 
   volatile char tmp[2];
-  __asan_poison_memory_region(&tmp, sizeof(tmp)); 
+  __asan_poison_memory_region(&tmp, sizeof(tmp));
 
   for (size_t i = 0; i < niter; ++i) {
     random_delay(&seed);