Bug 202748 – JSC does not compile on 32bits in Debug mode

• Status: RESOLVED
• Resolution: FIXED
• Component: JavaScriptCore

[Paulo Matos]

Since bug 202509 got fixed, we cannot build JSC 32bits in Debug mode.

It fails with:
FAILED: DerivedSources/JavaScriptCore/LLIntAssembly.h 
cd /home/pmatos/Projects/igalia/WebKit/WebKitBuild/Debug/DerivedSources/JavaScriptCore && /usr/bin/ruby /home/pmatos/Projects/igalia/WebKit/Source/JavaScriptCore/offlineasm/asm.rb -I/home/pmatos/Projects/igalia/WebKit/WebKitBuild/Debug/DerivedSources/JavaScriptCore/ /home/pmatos/Projects/igalia/WebKit/Source/JavaScriptCore/llint/LowLevelInterpreter.asm /home/pmatos/Projects/igalia/WebKit/WebKitBuild/Debug/bin/LLIntOffsetsExtractor /home/pmatos/Projects/igalia/WebKit/WebKitBuild/Debug/DerivedSources/JavaScriptCore/LLIntAssembly.h && /usr/bin/cmake -E touch_nocreate /home/pmatos/Projects/igalia/WebKit/WebKitBuild/Debug/DerivedSources/JavaScriptCore/LLIntAssembly.h
/home/pmatos/Projects/igalia/WebKit/Source/JavaScriptCore/offlineasm/transform.rb:621:in `validate': Unresolved temp at /home/pmatos/Projects/igalia/WebKit/Source/JavaScriptCore/llint/LowLevelInterpreter.asm:782 (RuntimeError)
	from /home/pmatos/Projects/igalia/WebKit/Source/JavaScriptCore/offlineasm/transform.rb:627:in `block in validateChildren'
	from /home/pmatos/Projects/igalia/WebKit/Source/JavaScriptCore/offlineasm/transform.rb:625:in `each'
	from /home/pmatos/Projects/igalia/WebKit/Source/JavaScriptCore/offlineasm/transform.rb:625:in `validateChildren'
	from /home/pmatos/Projects/igalia/WebKit/Source/JavaScriptCore/offlineasm/transform.rb:689:in `validate'
	from /home/pmatos/Projects/igalia/WebKit/Source/JavaScriptCore/offlineasm/transform.rb:627:in `block in validateChildren'
	from /home/pmatos/Projects/igalia/WebKit/Source/JavaScriptCore/offlineasm/transform.rb:625:in `each'
	from /home/pmatos/Projects/igalia/WebKit/Source/JavaScriptCore/offlineasm/transform.rb:625:in `validateChildren'
	from /home/pmatos/Projects/igalia/WebKit/Source/JavaScriptCore/offlineasm/transform.rb:634:in `validate'
	from /home/pmatos/Projects/igalia/WebKit/Source/JavaScriptCore/offlineasm/asm.rb:403:in `block (3 levels) in <main>'
	from /home/pmatos/Projects/igalia/WebKit/Source/JavaScriptCore/offlineasm/settings.rb:107:in `forSettings'
	from /home/pmatos/Projects/igalia/WebKit/Source/JavaScriptCore/offlineasm/asm.rb:390:in `block (2 levels) in <main>'
	from /home/pmatos/Projects/igalia/WebKit/Source/JavaScriptCore/offlineasm/asm.rb:386:in `each'
	from /home/pmatos/Projects/igalia/WebKit/Source/JavaScriptCore/offlineasm/asm.rb:386:in `block in <main>'
	from /home/pmatos/Projects/igalia/WebKit/Source/JavaScriptCore/offlineasm/asm.rb:376:in `open'
	from /home/pmatos/Projects/igalia/WebKit/Source/JavaScriptCore/offlineasm/asm.rb:376:in `<main>'

In Release mode, JSC builds successfully but a ton of tests fail with a segmentation fault. I am left wondering why the `validate` seems to be happy in Release and raises an error in Debug mode. I am investigating this issue at the moment, but I am happy to discuss possible issues, if anyone has an idea of what is going wrong.

[Paulo Matos]

Apologies - I meant since but 202569 :  [JSC] Change signature of HostFunction to (JSGlobalObject*, CallFrame*)

[Yusuke Suzuki]

This is non-CLoop 32bit issue (32bit JIT enabled JSC) and fixed in r250982.

[Paulo Matos]

(In reply to Yusuke Suzuki from comment #2)
> This is non-CLoop 32bit issue (32bit JIT enabled JSC) and fixed in r250982.

Thanks - I confirm. Closing.