Created attachment 293671 [details] crash log URL: https://travis-ci.org/rails/rails/jobs/172644765 macOS 10.12.1 (16B2555) STP Release 16 (Safari 10.1, WebKit 12603.1.10) Steps to reproduce: * go to the URL above Crashed Thread: 11 WTF::AutomaticThread Thread 11 Crashed:: WTF::AutomaticThread 0 com.apple.JavaScriptCore 0x00000001030fa08c JSC::DFG::ByteCodeParser::getPredictionWithoutOSRExit(unsigned int) + 620 1 com.apple.JavaScriptCore 0x00000001030ecdeb JSC::DFG::ByteCodeParser::handleCall(int, JSC::DFG::NodeType, JSC::CallMode, unsigned int, JSC::DFG::Node*, int, int, JSC::CallLinkStatus) + 379 2 com.apple.JavaScriptCore 0x00000001030ec56d JSC::DFG::ByteCodeParser::handleCall(int, JSC::DFG::NodeType, JSC::CallMode, unsigned int, int, int, int) + 429 3 com.apple.JavaScriptCore 0x0000000102d7acca JSC::DFG::ByteCodeParser::parseBlock(unsigned int) + 6698 4 com.apple.JavaScriptCore 0x0000000102d7902b JSC::DFG::ByteCodeParser::parseCodeBlock() + 1243 5 com.apple.JavaScriptCore 0x000000010310090a void
Related to https://bugs.webkit.org/show_bug.cgi?id=164306 ?
<rdar://problem/29079164>
Dieter, do you know which websites you saw this on? It looks like it could be solved by the fix in: https://bugs.webkit.org/show_bug.cgi?id=164306
Saam, mostly on Travis CI build logs like the one in my original report, but also other build logs like https://travis-ci.org/elixir-lang/elixir/jobs/173800891
Dieter, this is indeed the same problem as: https://bugs.webkit.org/show_bug.cgi?id=164306 I've just verified that the fix for that bug also fixes this crash. Thanks for reporting the bug. *** This bug has been marked as a duplicate of bug 164306 ***