149095 2015-09-12 13:57:17 -0700 jsc-layout-tests.yaml/js/script-tests/dfg-dead-variable-on-exit.js.layout-ftl occasionally times out in debug 2015-10-06 10:59:14 -0700 1 1 1 Unclassified WebKit JavaScriptCore Other All All NEW InRadar, MakingBotsRed P2 Normal --- 1 fpizlo webkit-unassigned ap ggaren mark.lam msaboff ossy simon.fraser webkit-bug-importer oldest_to_newest 1125410 0 fpizlo 2015-09-12 13:57:17 -0700 It looks like this: jsc-layout-tests.yaml/js/script-tests/dfg-dead-variable-on-exit.js.layout-ftl: This tests that if a variable is dead on OSR exit, it will at least contain a valid JS value. jsc-layout-tests.yaml/js/script-tests/dfg-dead-variable-on-exit.js.layout-ftl: jsc-layout-tests.yaml/js/script-tests/dfg-dead-variable-on-exit.js.layout-ftl: On success, you will see a series of "PASS" messages, followed by "TEST COMPLETE". jsc-layout-tests.yaml/js/script-tests/dfg-dead-variable-on-exit.js.layout-ftl: jsc-layout-tests.yaml/js/script-tests/dfg-dead-variable-on-exit.js.layout-ftl: jsc-layout-tests.yaml/js/script-tests/dfg-dead-variable-on-exit.js.layout-ftl: Timed out after 339.000000 seconds! jsc-layout-tests.yaml/js/script-tests/dfg-dead-variable-on-exit.js.layout-ftl: 1 0x1065d7e40 WTFCrash jsc-layout-tests.yaml/js/script-tests/dfg-dead-variable-on-exit.js.layout-ftl: 2 0x105a1b1ce timeoutThreadMain(void*) jsc-layout-tests.yaml/js/script-tests/dfg-dead-variable-on-exit.js.layout-ftl: 3 0x106640a79 WTF::createThread(void (*)(void*), void*, char const*)::$_0::operator()() const jsc-layout-tests.yaml/js/script-tests/dfg-dead-variable-on-exit.js.layout-ftl: 4 0x106640a4c std::__1::__function::__func<WTF::createThread(void (*)(void*), void*, char const*)::$_0, std::__1::allocator<WTF::createThread(void (*)(void*), void*, char const*)::$_0>, void ()>::operator()() jsc-layout-tests.yaml/js/script-tests/dfg-dead-variable-on-exit.js.layout-ftl: 5 0x1060a307a std::__1::function<void ()>::operator()() const jsc-layout-tests.yaml/js/script-tests/dfg-dead-variable-on-exit.js.layout-ftl: 6 0x10663f89e WTF::threadEntryPoint(void*) jsc-layout-tests.yaml/js/script-tests/dfg-dead-variable-on-exit.js.layout-ftl: 7 0x106641011 WTF::wtfThreadEntryPoint(void*) jsc-layout-tests.yaml/js/script-tests/dfg-dead-variable-on-exit.js.layout-ftl: 8 0x7fff86dee05a _pthread_body jsc-layout-tests.yaml/js/script-tests/dfg-dead-variable-on-exit.js.layout-ftl: 9 0x7fff86dedfd7 _pthread_body jsc-layout-tests.yaml/js/script-tests/dfg-dead-variable-on-exit.js.layout-ftl: 10 0x7fff86deb3ed thread_start jsc-layout-tests.yaml/js/script-tests/dfg-dead-variable-on-exit.js.layout-ftl: test_script_22195: line 2: 49168 Segmentation fault: 11 "$@" ../../../../.vm/JavaScriptCore.framework/Resources/jsc --useFTLJIT\=false --enableFunctionDotArguments\=true --testTheFTL\=true --useFTLJIT\=true --ftlCrashesIfCantInitializeLLVM\=true resources/standalone-pre.js dfg-dead-variable-on-exit.js resources/standalone-post.js jsc-layout-tests.yaml/js/script-tests/dfg-dead-variable-on-exit.js.layout-ftl: ERROR: Unexpected exit code: 139 FAIL: jsc-layout-tests.yaml/js/script-tests/dfg-dead-variable-on-exit.js.layout-ftl 1127011 1 ap 2015-09-17 19:28:05 -0700 This is still happening. 1129412 2 webkit-bug-importer 2015-09-29 14:37:32 -0700 <rdar://problem/22904432> 1130206 3 ossy 2015-10-02 04:07:27 -0700 *** Bug 149744 has been marked as a duplicate of this bug. *** 1130207 4 ossy 2015-10-02 04:11:12 -0700 I checked the bot history, and we noticed this failure first time on r189621: https://build.webkit.org/builders/Apple%20Yosemite%20Debug%20JSC%20%28Tests%29/builds/3192 relevant JSC changes before this change: - https://trac.webkit.org/changeset/189620 - https://trac.webkit.org/changeset/189616 - https://trac.webkit.org/changeset/189596 - https://trac.webkit.org/changeset/189586