Bug 152752

I'm seeing this test failure every time on my machine: regress/script-tests/Int16Array-bubble-sort.js.ftl-eager: 1 0x10bf865c9 WTF::CrashOnOverflow::overflowed() regress/script-tests/Int16Array-bubble-sort.js.ftl-eager: 2 0x10c0b47bb JSC::CodeBlock::resultProfileForBytecodeOffset(int) regress/script-tests/Int16Array-bubble-sort.js.ftl-eager: 3 0x10c14611d JSC::DFG::ByteCodeParser::makeDivSafe(JSC::DFG::Node*) regress/script-tests/Int16Array-bubble-sort.js.ftl-eager: 4 0x10c137ebd JSC::DFG::ByteCodeParser::parseBlock(unsigned int) regress/script-tests/Int16Array-bubble-sort.js.ftl-eager: 5 0x10c14259a JSC::DFG::ByteCodeParser::parseCodeBlock() regress/script-tests/Int16Array-bubble-sort.js.ftl-eager: 6 0x10c142906 JSC::DFG::ByteCodeParser::parse() regress/script-tests/Int16Array-bubble-sort.js.ftl-eager: 7 0x10c142b7d JSC::DFG::parse(JSC::DFG::Graph&) regress/script-tests/Int16Array-bubble-sort.js.ftl-eager: 8 0x10c250cb3 JSC::DFG::Plan::compileInThreadImpl(JSC::DFG::LongLivedState&) regress/script-tests/Int16Array-bubble-sort.js.ftl-eager: 9 0x10c250895 JSC::DFG::Plan::compileInThread(JSC::DFG::LongLivedState&, JSC::DFG::ThreadData*) regress/script-tests/Int16Array-bubble-sort.js.ftl-eager: 10 0x10c309cfc JSC::DFG::Worklist::runThread(JSC::DFG::ThreadData*) regress/script-tests/Int16Array-bubble-sort.js.ftl-eager: 11 0x10c803f73 WTF::threadEntryPoint(void*) regress/script-tests/Int16Array-bubble-sort.js.ftl-eager: 12 0x10c80433f WTF::wtfThreadEntryPoint(void*) regress/script-tests/Int16Array-bubble-sort.js.ftl-eager: 13 0x7fff8b5b8268 _pthread_body regress/script-tests/Int16Array-bubble-sort.js.ftl-eager: 14 0x7fff8b5b81e5 _pthread_body regress/script-tests/Int16Array-bubble-sort.js.ftl-eager: 15 0x7fff8b5b641d thread_start regress/script-tests/Int16Array-bubble-sort.js.ftl-eager: test_script_22385: line 2: 53407 Segmentation fault: 11 ( "$@" ../../../.vm/JavaScriptCore.framework/Resources/jsc --useFTLJIT\=false --useFunctionDotArguments\=true --useFTLJIT\=true --ftlCrashesIfCantInitializeLLVM\=true --thresholdForJITAfterWarmUp\=10 --thresholdForJITSoon\=10 --thresholdForOptimizeAfterWarmUp\=20 --thresholdForOptimizeAfterLongWarmUp\=20 --thresholdForOptimizeSoon\=20 --thresholdForFTLOptimizeAfterWarmUp\=20 --thresholdForFTLOptimizeSoon\=20 --maximumEvalCacheableSourceLength\=150000 Int16Array-bubble-sort.js ) regress/script-tests/Int16Array-bubble-sort.js.ftl-eager: ERROR: Unexpected exit code: 139 The failure appears to require the test to run concurrently to something. It doesn't crash when you just do a standalone run. In fact, I can run the test standalone >700 times without seeing a crash.