Using -DCMAKE_BUILD_TYPE=Debug results the following build error: ../Source/JavaScriptCore/bytecompiler/BytecodeGenerator.cpp:2923:48: error: no member named 'StructureForInContextType' in JSC::ForInContext' ASSERT(context.type() == ForInContext::StructureForInContextType); ~~~~~~~~~~~~~~^ DerivedSources/ForwardingHeaders/wtf/Assertions.h:318:11: note: expanded from macro 'ASSERT' if (!(assertion)) { \ ^~~~~~~~~ 1 error generated.
Upstream does not have the assertion, and the explicit cast should have been changed to “context.asStructureForInContext()” after r237502 in the stable release branch. I am making a patch for this.
Created attachment 353803 [details] Patch
(In reply to Adrian Perez from comment #2) > Created attachment 353803 [details] > Patch Manually landed as r237780 in the webkit-2.22 branch: https://trac.webkit.org/changeset/237780/webkit/releases/WebKitGTK/webkit-2.22
<rdar://problem/45791531>