Bug 137686 – [GTK] undefined method `[]' for nil:NilClass (NoMethodError)

• Component: WebKitGTK
• Status: RESOLVED FIXED

[Alberto Garcia]

I just saw WebKitGTK+ 2.6.1 failing to build in ppc64el:

[  2%] Generating ../../DerivedSources/JavaScriptCore/LLIntDesiredOffsets.h
cd /«BUILDDIR»/webkit2gtk-2.6.1+dfsg1/obj-powerpc64le-linux-gnu/Source/JavaScriptCore && /usr/bin/ruby /«BUILDDIR»/webkit2gtk-2.6.1+dfsg1/Source/JavaScriptCore/offlineasm/generate_offset_extractor.rb -I/«BUILDDIR»/webkit2gtk-2.6.1+dfsg1/obj-powerpc64le-linux-gnu/DerivedSources/JavaScriptCore/ /«BUILDDIR»/webkit2gtk-2.6.1+dfsg1/Source/JavaScriptCore/llint/LowLevelInterpreter.asm /«BUILDDIR»/webkit2gtk-2.6.1+dfsg1/obj-powerpc64le-linux-gnu/DerivedSources/JavaScriptCore/LLIntDesiredOffsets.h
/«BUILDDIR»/webkit2gtk-2.6.1+dfsg1/Source/JavaScriptCore/offlineasm/parser.rb:64:in `processIncludeOptions': undefined method `[]' for nil:NilClass (NoMethodError)
        from /«BUILDDIR»/webkit2gtk-2.6.1+dfsg1/Source/JavaScriptCore/offlineasm/generate_offset_extractor.rb:37:in `<main>'
make[3]: *** [DerivedSources/JavaScriptCore/LLIntDesiredOffsets.h] Error 1
Source/JavaScriptCore/CMakeFiles/LLIntOffsetsExtractor.dir/build.make:78: recipe for target 'DerivedSources/JavaScriptCore/LLIntDesiredOffsets.h' failed
make[3]: Leaving directory '/«BUILDDIR»/webkit2gtk-2.6.1+dfsg1/obj-powerpc64le-linux-gnu'
make[2]: *** [Source/JavaScriptCore/CMakeFiles/LLIntOffsetsExtractor.dir/all] Error 2
make[2]: *** Waiting for unfinished jobs....

Full build log here (NOTE: 1.5MB text document):

https://buildd.debian.org/status/fetch.php?pkg=webkit2gtk&arch=ppc64el&ver=2.6.1%2Bdfsg1-1&stamp=1413237439

[Alberto Garcia]

It built fine after a second try. I haven't taken a look at this yet, but I guess this might be some sort of race condition?

[Alberto Garcia]

We haven't been able to reproduce it again after many attempts in different architectures, it was probably fixed in 2.6.2, I'll close this.