#1 0x110fce753 in JSC:: JITCode:: execute( JSC:: VM*, JSC:: ProtoCallFrame*) (/ Volumes/ Data/ Build/ Debug/ JavaScriptCore. framework/ Versions/ A/ JavaScriptCore+ 0x3276a0) The crash stack trace is as follows: = 94293= ERROR: AddressSanitizer: heap- use- after- free on address 0圆1e000088a40 at pc 0x00010f9536a1 bp 0x7fff575795d0 sp 0x7fff575795c8 READ of size 8 at 0圆1e000088a40 thread T0 #0 0x10f9536a0 in JSC:: VM:: exception() const (/ Volumes/ Data/ Build/ Debug/ JavaScriptCore. Tools/ Scripts/ run- webkit- tests LayoutTests/ inspector/ debugger/ regress- 133182. While running this test suite on an AddressSanitizer (ASan) build of WebKit, and we discovered a crash on one of the layout tests: $. We use the WebKit Layout Tests as our primary regression tests for the full WebKit stack. Logging the Modifications to VM::calleeSaveRegistersBuffer.Who is Modifying VM::calleeSaveRegistersBuffer?.Filtering Functions to Compile using a Whitelist.Filtering Functions to Compile by Bytecode Size.

Preparation Work for Debugging the Crash.

Today, I’ll describe some of these tools that WebKit engineers use by telling the story of how we diagnosed a real bug in the JSC virtual machine (VM). But when the bug is at a lower level in WebKit’s JavaScript engine, JavaScriptCore (JSC), WebKit engineers will need to use a different set of tools to diagnose the issue. When debugging JavaScript bugs, web developers have Web Inspector which provides a debugger and many introspective tools to examine their code with.

Codeblocks compiler crashes when build