[compiler-rt] r359675 - [libFuzzer] Add --dump-input-on-failure to help diagnose AArch64 failures

[Peter Smith via llvm-commits]

Author: psmith
Date: Wed May  1 05:30:04 2019
New Revision: 359675

URL: http://llvm.org/viewvc/llvm-project?rev=359675&view=rev
Log:
[libFuzzer] Add --dump-input-on-failure to help diagnose AArch64 failures

The fork-siguser.test and fork.test intermittently fail on the AArch64
buildbot. Unfortunately these failures are not reproducible on a similar
machine and seem to fail when the machines are under load. Before
suggesting the tests be marked unsupported for AArch64 we'd like to see
if we can get some more information about the failures to see if it helps
us reproduce. This patch adds --dump-input-on-failure to the FileCheck
commands to see if we can get some more information about the failures.

Differential Revision: https://reviews.llvm.org/D61315


Modified:
    compiler-rt/trunk/test/fuzzer/fork-sigusr.test
    compiler-rt/trunk/test/fuzzer/fork.test

Modified: compiler-rt/trunk/test/fuzzer/fork-sigusr.test
URL: http://llvm.org/viewvc/llvm-project/compiler-rt/trunk/test/fuzzer/fork-sigusr.test?rev=359675&r1=359674&r2=359675&view=diff
==============================================================================
--- compiler-rt/trunk/test/fuzzer/fork-sigusr.test (original)
+++ compiler-rt/trunk/test/fuzzer/fork-sigusr.test Wed May  1 05:30:04 2019
@@ -9,6 +9,6 @@ RUN: %run %t/ForkSIGUSR -fork=3 -rss_lim
 RUN: sleep 3
 RUN: pkill -SIGUSR2 -f %t/ForkSIGUSR
 RUN: sleep 3
-RUN: cat %t/log | FileCheck %s
+RUN: cat %t/log | FileCheck %s --dump-input-on-failure
 
 CHECK: libFuzzer: {{.*}}exiting

Modified: compiler-rt/trunk/test/fuzzer/fork.test
URL: http://llvm.org/viewvc/llvm-project/compiler-rt/trunk/test/fuzzer/fork.test?rev=359675&r1=359674&r2=359675&view=diff
==============================================================================
--- compiler-rt/trunk/test/fuzzer/fork.test (original)
+++ compiler-rt/trunk/test/fuzzer/fork.test Wed May  1 05:30:04 2019
@@ -1,21 +1,21 @@
 # UNSUPPORTED: darwin, freebsd
 BINGO: BINGO
 RUN: %cpp_compiler %S/SimpleTest.cpp -o %t-SimpleTest
-RUN: not %run %t-SimpleTest -fork=1 2>&1 | FileCheck %s --check-prefix=BINGO
+RUN: not %run %t-SimpleTest -fork=1 2>&1 | FileCheck %s --dump-input-on-failure --check-prefix=BINGO
 
 TIMEOUT: ERROR: libFuzzer: timeout
 RUN: %cpp_compiler %S/TimeoutTest.cpp -o %t-TimeoutTest
-RUN: not %run %t-TimeoutTest -fork=1 -timeout=1 -ignore_timeouts=0 2>&1 | FileCheck %s --check-prefix=TIMEOUT
+RUN: not %run %t-TimeoutTest -fork=1 -timeout=1 -ignore_timeouts=0 2>&1 | FileCheck %s --dump-input-on-failure --check-prefix=TIMEOUT
 
 OOM: ERROR: libFuzzer: out-of-memory
 RUN: %cpp_compiler %S/OutOfMemoryTest.cpp -o %t-OutOfMemoryTest
-RUN: not %run %t-OutOfMemoryTest -fork=1 -ignore_ooms=0  -rss_limit_mb=128 2>&1 | FileCheck %s --check-prefix=OOM
+RUN: not %run %t-OutOfMemoryTest -fork=1 -ignore_ooms=0  -rss_limit_mb=128 2>&1 | FileCheck %s --dump-input-on-failure --check-prefix=OOM
 
 # access-violation is the error thrown on Windows. Address will be smaller on i386.
 CRASH: {{SEGV|access-violation}} on unknown address 0x00000000
 RUN: %cpp_compiler %S/ShallowOOMDeepCrash.cpp -o %t-ShallowOOMDeepCrash
-RUN: not %run %t-ShallowOOMDeepCrash -fork=1 -rss_limit_mb=128 2>&1 | FileCheck %s --check-prefix=CRASH
+RUN: not %run %t-ShallowOOMDeepCrash -fork=1 -rss_limit_mb=128 2>&1 | FileCheck %s --dump-input-on-failure --check-prefix=CRASH
 
 MAX_TOTAL_TIME: INFO: fuzzed for {{.*}} seconds, wrapping up soon
 MAX_TOTAL_TIME: INFO: exiting: {{.*}} time:
-RUN: not %run %t-ShallowOOMDeepCrash -fork=1 -rss_limit_mb=128 -ignore_crashes=1 -max_total_time=5 2>&1 | FileCheck %s --check-prefix=MAX_TOTAL_TIME
+RUN: not %run %t-ShallowOOMDeepCrash -fork=1 -rss_limit_mb=128 -ignore_crashes=1 -max_total_time=5 2>&1 | FileCheck %s --dump-input-on-failure --check-prefix=MAX_TOTAL_TIME