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

New issue 19676 by [email protected]: Memory leak in  
WebCore::XMLNames::init()
http://code.google.com/p/chromium/issues/detail?id=19676

Like bug 17134, bug 17795, bug 17996, and probably a few others.
Happens infrequently, but saw it on the UI valgrind bots once today:

http://build.chromium.org/buildbot/waterfall/builders/Linux%20UI%203%20of%203%20(valgrind)/builds/802/steps/valgrind%20test:%20ui/logs/stdio

Valgrind complains

72 bytes in 1 blocks are definitely lost in loss record 2,469 of 2,643
   malloc (vg_replace_malloc.c:194)
   WTF::fastMalloc(unsigned int)
(third_party/WebKit/JavaScriptCore/wtf/FastMalloc.cpp:231)
   WebCore::StringImpl::StringImpl(char const*, unsigned int, unsigned int)
(third_party/WebKit/WebCore/platform/text/StringImpl.cpp:51)
   std::pair<WTF::HashTableIterator<WebCore::StringImpl...)
(third_party/WebKit/WebCore/platform/text/AtomicString.cpp:68)
   std::pair<WTF::HashTableIteratorAdapter<WTF::HashTable<...)
(third_party/WebKit/JavaScriptCore/wtf/HashSet.h:216)
   WebCore::AtomicString::add(char const*)
(third_party/WebKit/WebCore/platform/text/AtomicString.cpp:88)
   WebCore::XMLNames::init()
(third_party/WebKit/WebCore/platform/text/AtomicString.h:36)
   WebCore::Frame::Frame(WebCore::Page*, WebCore::HTMLFrameOwnerElement*,
WebCore::FrameLoaderClient*) (third_party/WebKit/WebCore/page/Frame.cpp:159)
   WebFrameImpl::InitMainFrame(WebViewImpl*)
(third_party/WebKit/WebCore/page/Frame.h:92)


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