[Webkit-unassigned] [Bug 136313] ASSERTION FAILED: from.isCell() && from.asCell()->JSCell::inherits(std::remove_pointer<To>::type::info()) in JSC::jsCast(JSC::JSValue) [with To = JSC::JSScope*]

bugzilla-daemon at webkit.org bugzilla-daemon at webkit.org
Wed Aug 27 18:07:31 PDT 2014


--- Comment #9 from Akos Kiss <akiss at inf.u-szeged.hu>  2014-08-27 18:07:36 PST ---
For the records:

On ARM64/iOS/clang, the prologue of JavaScriptCore`operationCallEval starts like this:

JavaScriptCore[0x256a0c]:  stp    x20, x19, [sp, #-32]!
JavaScriptCore[0x256a10]:  stp    fp, lr, [sp, #16]
JavaScriptCore[0x256a14]:  add    fp, sp, #16

The procedure call standard for ARM64 (http://infocenter.arm.com/help/topic/com.arm.doc.ihi0055b/IHI0055B_aapcs64.pdf) says, in Section 5.4.3, that the location of the frame record within a stack frame is not specified, so both the iOS/clang and EFL/gcc prologues seem to be valid.

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