[Bug 908508]

[Landry-openbsd]

I started updating the patch from comment #13 to hg tip, but so far on
sparc64 it fails with :

js/src/jscntxt.cpp: In member function 'void js::ThreadData::sizeOfExcludingThis(size_t (*)(const void*, size_t), size_t*, size_t*, size_t*, size_t*)':
js/src/jscntxt.cpp:163: error: invalid use of incomplete type 'struct JSC::ExecutableAllocator'
js/src/jsprvtd.h:335: error: forward declaration of 'struct JSC::ExecutableAllocator'
js/src/jscntxt.h: In member function 'void JSRuntime::delete_(T*) [with T = JSC::ExecutableAllocator]':
js/src/jscntxt.cpp:125:   instantiated from here
js/src/jscntxt.h:712: error: invalid use of incomplete type 'struct JSC::ExecutableAllocator'
js/src/jsprvtd.h:335: error: forward declaration of 'struct JSC::ExecutableAllocator'
js/src/jscntxt.h: In member function 'T* JSRuntime::new_() [with T = JSC::ExecutableAllocator]':
js/src/jscntxt.cpp:201:   instantiated from here
js/src/jscntxt.h:711: error: invalid application of 'sizeof' to incomplete type 'JSC::ExecutableAllocator' 
js/src/jscntxt.h:711: error: invalid use of incomplete type 'struct JSC::ExecutableAllocator'
js/src/jsprvtd.h:335: error: forward declaration of 'struct JSC::ExecutableAllocator'

Of course, it makes sense to me, since JSC::ExecutableAllocator is defined only if ENABLE_ASSEMBLER is set, and the chunk in js/src/Makefile.in makes it unset if ENABLE_YARR_JIT is not set. I'm now trying with that chunk out on sparc64 and will try various hacks.
if i get something that builds i'll post the patch for actual testing on ppc. I really wonder how m-c builds on ppc right now, what changed recently in that regard, and how TenFourFox does to build....

Another annoyance was the landing of bug #673188, which right now
#errors out if ENABLE_YARR_JIT is unset (see RegExpObject.cpp, function
checkSyntax()), pretty unfriendly. So far i've replaced it by a return
true, but it's of course ugly.

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https://bugs.launchpad.net/bugs/908508

Title:
  Firefox/Thunderbird 10 FTBFS on powerpc in js/src/yarr/pcre

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