Xpcshell (a js engine) crashes on ppc. xpcshell is used for Firefox build so Firefox fails to build here. ppc64 runs without issues.

Backtrace:

#0  0x0b7cd68c in mozJSComponentLoader::Import (this=0x102ca640, registryLocation=..., 
    targetValArg=<error reading variable: Cannot access memory at address 0xffffff82>, cx=0x102cf5d0, optionalArgc=0 '\000', 
    retval=...) at /builddir/build/BUILD/firefox-31.0.0/mozilla-aurora/js/xpconnect/loader/mozJSComponentLoader.cpp:1111
#1  0x0b673dd4 in nsXPCComponents_Utils::Import (this=0x10313100, registryLocation=..., targetObj=..., cx=0x102cf5d0, 
    optionalArgc=0 '\000', retval=...)
    at /builddir/build/BUILD/firefox-31.0.0/mozilla-aurora/js/xpconnect/src/XPCComponents.cpp:2733
#2  0x0997e750 in NS_InvokeByIndex ()
    at /builddir/build/BUILD/firefox-31.0.0/mozilla-aurora/xpcom/reflect/xptcall/src/md/unix/xptcinvoke_asm_ppc_linux.S:86
#3  0x0b761cc4 in CallMethodHelper::Invoke (this=0xfffed3e8)
    at /builddir/build/BUILD/firefox-31.0.0/mozilla-aurora/js/xpconnect/src/XPCWrappedNative.cpp:2391
#4  0x0b75e848 in CallMethodHelper::Call (this=0xfffed3e8)
    at /builddir/build/BUILD/firefox-31.0.0/mozilla-aurora/js/xpconnect/src/XPCWrappedNative.cpp:1732
#5  0x0b75e644 in XPCWrappedNative::CallMethod (ccx=..., mode=XPCWrappedNative::CALL_METHOD)
    at /builddir/build/BUILD/firefox-31.0.0/mozilla-aurora/js/xpconnect/src/XPCWrappedNative.cpp:1699
#6  0x0b7747bc in XPC_WN_CallMethod (cx=0x102cf5d0, argc=1, vp=0x1027bc40)
    at /builddir/build/BUILD/firefox-31.0.0/mozilla-aurora/js/xpconnect/src/XPCWrappedNativeJSOps.cpp:1284
#7  0x0e1a488c in js::CallJSNative (cx=0x102cf5d0, 
    native=0xb774420 <XPC_WN_CallMethod(JSContext*, unsigned int, JS::Value*)>, args=...)
    at /builddir/build/BUILD/firefox-31.0.0/mozilla-aurora/js/src/jscntxtinlines.h:239
#8  0x0e1b020c in js::Invoke (cx=0x102cf5d0, args=..., construct=js::NO_CONSTRUCT)
    at /builddir/build/BUILD/firefox-31.0.0/mozilla-aurora/js/src/vm/Interpreter.cpp:475
#9  0x0e1c1b54 in Interpret (cx=0x102cf5d0, state=...)
    at /builddir/build/BUILD/firefox-31.0.0/mozilla-aurora/js/src/vm/Interpreter.cpp:2620
#10 0x0e1afc90 in js::RunScript (cx=0x102cf5d0, state=...)
    at /builddir/build/BUILD/firefox-31.0.0/mozilla-aurora/js/src/vm/Interpreter.cpp:422
#11 0x0e1b17a8 in js::ExecuteKernel (cx=0x102cf5d0, script=..., scopeChainArg=..., thisv=..., type=js::EXECUTE_GLOBAL, 
    evalInFrame=..., result=0xfffedf18) at /builddir/build/BUILD/firefox-31.0.0/mozilla-aurora/js/src/vm/Interpreter.cpp:630
#12 0x0e1b1c4c in js::Execute (cx=0x102cf5d0, script=..., scopeChainArg=..., rval=0xfffedf18)
    at /builddir/build/BUILD/firefox-31.0.0/mozilla-aurora/js/src/vm/Interpreter.cpp:667
#13 0x0dee0934 in ExecuteScript (cx=0x102cf5d0, obj=..., scriptArg=..., rval=0xfffedf18)
    at /builddir/build/BUILD/firefox-31.0.0/mozilla-aurora/js/src/jsapi.cpp:4782
#14 0x0dee0af8 in JS_ExecuteScript (cx=0x102cf5d0, obj=..., scriptArg=..., rval=...)
    at /builddir/build/BUILD/firefox-31.0.0/mozilla-aurora/js/src/jsapi.cpp:4788
#15 0x0b731f80 in ProcessFile (cx=0x102cf5d0, obj=..., 
    filename=0xfffef776 "/builddir/build/BUILD/firefox-31.0.0/mozilla-aurora/toolkit/mozapps/installer/precompile_cache.js", 
    file=0x10302b88, forceTTY=false)
    at /builddir/build/BUILD/firefox-31.0.0/mozilla-aurora/js/xpconnect/src/XPCShellImpl.cpp:930
#16 0x0b732778 in Process (cx=0x102cf5d0, obj=..., 
    filename=0xfffef776 "/builddir/build/BUILD/firefox-31.0.0/mozilla-aurora/toolkit/mozapps/installer/precompile_cache.js", 
    forceTTY=false) at /builddir/build/BUILD/firefox-31.0.0/mozilla-aurora/js/xpconnect/src/XPCShellImpl.cpp:1007
#17 0x0b733128 in ProcessArgs (cx=0x102cf5d0, obj=..., argv=0xfffef518, argc=4, aDirProvider=0xfffef144)
    at /builddir/build/BUILD/firefox-31.0.0/mozilla-aurora/js/xpconnect/src/XPCShellImpl.cpp:1135
#18 0x0b734d20 in XRE_XPCShellMain (argc=4, argv=0xfffef518, envp=0xfffef52c)
    at /builddir/build/BUILD/firefox-31.0.0/mozilla-aurora/js/xpconnect/src/XPCShellImpl.cpp:1590
#19 0x100022ac in main (argc=9, argv=0xfffef504, envp=0xfffef52c)
    at /builddir/build/BUILD/firefox-31.0.0/mozilla-aurora/js/xpconnect/shell/xpcshell.cpp:42