Bug#569590: seed: FTBFS on alpha: segfault

[Michael Cree]

A backtrace for this bug follows:

#0  WebCore::Settings::fontRenderingMode (this=0x0)
     at ../WebCore/page/Settings.cpp:444
No locals.
#1  0x00000200010901f0 in 
WTF::VectorBufferBase<JSC::GetByIdExceptionInfo>::deallocateBuffer 
(this=0x20004ba0dc0, __in_chrg=<value optimized out>)
     at ../JavaScriptCore/wtf/Vector.h:309
No locals.
#2  ~VectorBuffer (this=0x20004ba0dc0, __in_chrg=<value optimized out>)
     at ../JavaScriptCore/wtf/Vector.h:366
No locals.
#3  ~Vector (this=0x20004ba0dc0, __in_chrg=<value optimized out>)
     at ../JavaScriptCore/wtf/Vector.h:516
No locals.
#4  ~ExceptionInfo (this=0x20004ba0dc0, __in_chrg=<value optimized out>)
     at ../JavaScriptCore/bytecode/CodeBlock.h:260
No locals.
#5  deleteOwnedPtr<JSC::ExceptionInfo> (this=0x20004ba0dc0,
     __in_chrg=<value optimized out>) at 
../JavaScriptCore/wtf/OwnPtrCommon.h:55
No locals.
#6  ~OwnPtr (this=0x20004ba0dc0, __in_chrg=<value optimized out>)
     at ../JavaScriptCore/wtf/OwnPtr.h:52
No locals.
#7  ~CodeBlock (this=0x20004ba0dc0, __in_chrg=<value optimized out>)
     at ../JavaScriptCore/bytecode/CodeBlock.cpp:1379
No locals.
#8  0x00000200010c0800 in JSC::ProgramCodeBlock::~ProgramCodeBlock() ()
    from /usr/lib/libwebkit-1.0.so.2
No symbol table info available.
#9  0x00000200010bd978 in ~ProgramExecutable (this=0x20004b76400,
     __in_chrg=<value optimized out>)
     at ../JavaScriptCore/runtime/Executable.cpp:55
No locals.
#10 0x000002000114d95c in WTF::RefCounted<JSC::ExecutableBase>::deref (
     exec=0x20004b74c88, scopeChain=..., source=..., thisValue=...)
     at ../JavaScriptCore/wtf/RefCounted.h:109
No locals.
#11 derefIfNotNull<JSC::ProgramExecutable> (exec=0x20004b74c88,
     scopeChain=..., source=..., thisValue=...)
     at ../JavaScriptCore/wtf/PassRefPtr.h:53
No locals.
#12 ~RefPtr (exec=0x20004b74c88, scopeChain=..., source=..., thisValue=...)
     at ../JavaScriptCore/wtf/RefPtr.h:54
No locals.
#13 JSC::evaluate (exec=0x20004b74c88, scopeChain=..., source=...,
     thisValue=...) at ../JavaScriptCore/runtime/Completion.cpp:69
         thisObj = <value optimized out>
         exception = {m_ptr = 0x0}
         lock = {<WTFNoncopyable::Noncopyable> = {<WTF::FastAllocBase> = 
{<No data fields>}, <No data fields>}, m_lockBehavior = 
JSC::SilenceAssertionsOnly}
         error = 0x11fe4ef18
         result = <value optimized out>
#14 0x0000020001071254 in JSEvaluateScript (ctx=<value optimized out>,
     script=<value optimized out>, thisObject=0x0, sourceURL=0x0,
     startingLineNumber=<value optimized out>, exception=0x0)
     at ../JavaScriptCore/API/JSBase.cpp:54
         entryShim = {<JSC::APIEntryShimWithoutLock> = {
             m_globalData = 0x20004b70400, m_entryIdentifierTable = 0x0},
           m_lock = {<WTFNoncopyable::Noncopyable> = 
{<WTF::FastAllocBase> = {<No data fields>}, <No data fields>},
             m_lockBehavior = JSC::SilenceAssertionsOnly}}
         globalObject = 0x20005300000
         completion = {m_type = JSC::Normal, m_value = {m_ptr = 
0x20005300040}}
         source = {m_provider = {<WTF::FastAllocBase> = {<No data fields>},
             m_ptr = 0x20004b68140}, m_startChar = 0, m_endChar = 18,
           m_firstLine = 1}
#15 0x0000020000043a08 in seed_simple_evaluate (ctx=0x20004b74c88,
     source=0x2000005a59f "Function.prototype", exception=0x0) at 
seed-api.c:305
         ret = 0x0
         script = 0x20004b72228
#16 0x000002000004a398 in seed_init_with_context_group (argc=0x11fe4f090,
     argv=0x11fe4f098, group=0x20004b70400) at seed-engine.c:1404
No locals.
#17 0x000002000004a89c in seed_init (argc=0x11fe4f090, argv=0x11fe4f098)
     at seed-engine.c:1476
No locals.
#18 0x000000012000183c in main (argc=3, argv=0x11fe4f1b8) at main.c:152
No locals.


Let me know if I can do anything else to help get this bug fixed.

Cheers
Michael.