Status: Untriaged
Owner: ----
Labels: Type-Bug Pri-2 OS-All Area-Misc Size-Medium valgrind

New issue 9524 by [email protected]: [UMR] Uninitialized var referenced in  
WebCore::CSSParserValueList::~CSSParserValueList from cssyyparse
http://code.google.com/p/chromium/issues/detail?id=9524

Valgrinding a release build on layout test 3499,
LayoutTests/fast/canvas/canvas-gradient-addStop-error.html,
showed uninitialised memory references.  Rerunning
with a debug build reproduced them, and showed the following backtraces:

10:21:39 valgrind_analyze.py [ERROR] UninitCondition
Conditional jump or move depends on uninitialised value(s)
   WebCore::CSSParserValueList::~CSSParserValueList()
(third_party/WebKit/WebCore/css/CSSParserValues.cpp:38)
   WebCore::CSSParserFunction::~CSSParserFunction()
(third_party/WebKit/WebCore/css/CSSParserValues.h:95)
   WebCore::CSSParserValueList::~CSSParserValueList()
(third_party/WebKit/WebCore/css/CSSParserValues.cpp:39)
   cssyyparse(void*) (third_party/WebKit/WebCore/css/CSSGrammar.y:1258)
   WebCore::CSSParser::parseColor(WebCore::CSSMutableStyleDeclaration*,  
WebCore::String
const&) (third_party/WebKit/WebCore/css/CSSParser.cpp:301)
Uninitialised value was created by a stack allocation
   cssyyparse(void*)
(chrome/Hammer/dbg/obj/webkit/V8Bindings/DerivedSources/CSSGrammar.cpp:1919)

Conditional jump or move depends on uninitialised value(s)
   WebCore::CSSParser::sinkFloatingValue(WebCore::CSSParserValue&)
(third_party/WebKit/WebCore/css/CSSParser.cpp:4541)
   cssyyparse(void*) (third_party/WebKit/WebCore/css/CSSGrammar.y:1340)
   WebCore::CSSParser::parseColor(WebCore::CSSMutableStyleDeclaration*,  
WebCore::String
const&) (third_party/WebKit/WebCore/css/CSSParser.cpp:301)
Uninitialised value was created by a stack allocation
   cssyyparse(void*)
(chrome/Hammer/dbg/obj/webkit/V8Bindings/DerivedSources/CSSGrammar.cpp:1919)

Conditional jump or move depends on uninitialised value(s)
   WebCore::CSSParserValueList::addValue(WebCore::CSSParserValue const&)
(third_party/WebKit/WebCore/css/CSSParserValues.cpp:45)
   cssyyparse(void*) (third_party/WebKit/WebCore/css/CSSGrammar.y:1340)
   WebCore::CSSParser::parseColor(WebCore::CSSMutableStyleDeclaration*,  
WebCore::String
const&) (third_party/WebKit/WebCore/css/CSSParser.cpp:301)
Uninitialised value was created by a stack allocation
   cssyyparse(void*)
(chrome/Hammer/dbg/obj/webkit/V8Bindings/DerivedSources/CSSGrammar.cpp:1919)


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