[Webkit-unassigned] [Bug 238956] New: REGRESSION(r292372): cloop crashes on s390x

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=238956

            Bug ID: 238956
           Summary: REGRESSION(r292372): cloop crashes on s390x
           Product: WebKit
           Version: WebKit Nightly Build
          Hardware: PC
                OS: Linux
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: JavaScriptCore
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: mcatanzaro at gnome.org

Since r292372 "[JSC] Store CodeBlock in caller side", JSC cloop is broken on s390x, all stress tests crashing with this backtrace:

#0  0x000003ff8251f512 in JSC::LLInt::CLoop::execute(JSC::OpcodeID, void*, JSC::VM*, JSC::ProtoCallFrame*, bool) ()
   from /home/jenkins/workspace/WebKit-JSC/label/s390x/WebKitBuild/Release/lib/libJavaScriptCore.so.1
No symbol table info available.
#1  0x000003ff82826f2c in vmEntryToJavaScript ()
   from /home/jenkins/workspace/WebKit-JSC/label/s390x/WebKitBuild/Release/lib/libJavaScriptCore.so.1
No symbol table info available.
#2  0x000003ff827f8f8a in JSC::Interpreter::executeProgram(JSC::SourceCode const&, JSC::JSGlobalObject*, JSC::JSObject*) () from /home/jenkins/workspace/WebKit-JSC/label/s390x/WebKitBuild/Release/lib/libJavaScriptCore.so.1
No symbol table info available.
#3  0x000003ff829d307a in JSC::evaluate(JSC::JSGlobalObject*, JSC::SourceCode const&, JSC::JSValue, WTF::NakedPtr<JSC::Exception>&) () from /home/jenkins/workspace/WebKit-JSC/label/s390x/WebKitBuild/Release/lib/libJavaScriptCore.so.1
No symbol table info available.
#4  0x0000000001017f70 in int runJSC<jscmain(int, char**)::{lambda(JSC::VM&, GlobalObject*, bool&)#1}>(CommandLine const&, bool, jscmain(int, char**)::{lambda(JSC::VM&, GlobalObject*, bool&)#1} const&) [clone .constprop.0] ()
No symbol table info available.
#5  0x00000000010188be in jscmain(int, char**) ()
No symbol table info available.
#6  0x000000000100bee8 in main ()
No symbol table info available.

I can try to catch this with a debug build for a better backtrace if requested.

cloop is still working fine all other architectures, so I suspect a big endian problem.

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