REGRESSION(r198554): It made many regexp tests crash on ARMv7 Thumb2 platforms

• Component: JavaScriptCore
• Status: RESOLVED DUPLICATE

[Csaba Osztrogonác]

JSCOnly Linux ARMv7 Thumb2 Release
- before: 139 fails - https://build.webkit.org/builders/JSCOnly%20Linux%20ARMv7%20Thumb2%20Release/builds/3
- after: 279 fails - https://build.webkit.org/builders/JSCOnly%20Linux%20ARMv7%20Thumb2%20Release/builds/4

GTK Linux ARM Release
- before: 119 fails - https://build.webkit.org/builders/GTK%20Linux%20ARM%20Release/builds/10635
- after: 191 fails - https://build.webkit.org/builders/GTK%20Linux%20ARM%20Release/builds/10636

ARMv7 Traditional (ARMAssembler with ARM instruction set) and AArch64 platforms aren't affected.

(note: I just reported this bug, but I don't have any time to investigate, debug, help fixing, create backtraces, etc.)

[Michael Saboff]

We are not seeing any of these crashes on iOS ARMv7 bots.

When you can, please provide a stack trace for one of these failures.

[Csaba Osztrogonác]

managed to get backtrace:

$ ./jsc regexp-match.js  --useLLInt=false
ASSERTION FAILED: !(reinterpret_cast<intptr_t>(to) & 1)
../../Source/JavaScriptCore/assembler/ARMv7Assembler.h(2206) : static void JSC::ARMv7Assembler::relinkJump(void*, void*)
1   0xb64bc334 WTFCrash
2   0xb5f9d108 JSC::ARMv7Assembler::relinkJump(void*, void*)
3   0xb61c94bc JSC::AbstractMacroAssembler<JSC::ARMv7Assembler, JSC::MacroAssemblerARMv7>::repatchNearCall(JSC::CodeLocationNearCall, JSC::CodeLocationLabel)
4   0xb61c650a JSC::linkFor(JSC::ExecState*, JSC::CallLinkInfo&, JSC::CodeBlock*, JSC::JSFunction*, JSC::MacroAssemblerCodePtr)
5   0xb61a61f6
Segmentation fault (core dumped)

[Csaba Osztrogonác]

Maybe it is a dup of bug154857 or bug154857 simply hides this bug.

[Csaba Osztrogonác]

It seesm it is a dup of It seesm it is a dup of bug155790

*** This bug has been marked as a duplicate of bug 155790 ***