Bug 132668 – offsets.rb:183:in `buildOffsetsMap': unhandled exception – is offlineasm dependency tracking broken?

• Status: NEW
• Component: JavaScriptCore

[Mark Rowe (bdash)]

A few people saw an error today when building JavaScriptCore that looked like:

offsets.rb:183:in `buildOffsetsMap': unhandled exception

This happened for me when updating from a SVN revision that was a day or two old to r168458 and then building. I had to resort to nuking my build directory in order to get a working build. It seems like something in the offlineasm world isn't rebuilding the necessary bits?

[Simon Fraser (smfr)]

This interrupts about every 3rd build that I do.

[Filip Pizlo]

(In reply to comment #1)
> This interrupts about every 3rd build that I do.

Do you do anything between those three builds, other than WebCore changes?

[Simon Fraser (smfr)]

I'm flipping between branches, between architectures and between targets (iOS/OS X).

Possibly related, incremental builds often fail with:
Undefined symbols for architecture x86_64:
  "_callToJavaScript", referenced from:
      __ZN3JSC7JITCode7executeEPNS_2VMEPNS_14ProtoCallFrameE in JITCode.o
  "_callToNativeFunction", referenced from:
      __ZN3JSC11Interpreter11executeCallEPNS_9ExecStateEPNS_8JSObjectENS_8CallTypeERKNS_8CallDataENS_7JSValueERKNS_7ArgListE in Interpreter.o
  "_llint_entry", referenced from:
      __ZN3JSC5LLInt10initializeEv in LLIntData.o
  "_sanitizeStackForVMImpl", referenced from:
      __ZN3JSC18sanitizeStackForVMEPNS_2VME in VM.o
ld: symbol(s) not found for architecture x86_64
clang: error: linker command failed with exit code 1 (use -v to see invocation)

[Filip Pizlo]

Assigning to Michael since he was the last one to mess with offlineasm.

[Simon Fraser (smfr)]

iOS/OS X use different build product directories FWIW

[Michael Saboff]

Believe this to be a Xcode issue.  Tracked in

[Radar WebKit Bug Importer]

<rdar://problem/16974705>