[Webkit-unassigned] [Bug 47136] WebSocket tests are crashing
bugzilla-daemon at webkit.org
bugzilla-daemon at webkit.org
Mon Oct 4 17:29:57 PDT 2010
https://bugs.webkit.org/show_bug.cgi?id=47136
Simon Fraser (smfr) <simon.fraser at apple.com> changed:
What |Removed |Added
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CC| |simon.fraser at apple.com
--- Comment #1 from Simon Fraser (smfr) <simon.fraser at apple.com> 2010-10-04 17:29:57 PST ---
There's a heap corruption bug somewhere. When debugging, I see variable display of 'this' go bad in Xcode in the SocketStreamHandleBase() ctor.
Disassembling this gives:
0x0000000103c0ad64 <+0000> push %rbp
0x0000000103c0ad65 <+0001> mov %rsp,%rbp
0x0000000103c0ad68 <+0004> mov %rdi,-0x8(%rbp)
0x0000000103c0ad6c <+0008> lea 0x1437e0d(%rip),%rax # 0x105042b80 <_ZTVN7WebCore22SocketStreamHandleBaseE>
0x0000000103c0ad73 <+0015> lea 0x10(%rax),%rdx
0x0000000103c0ad77 <+0019> mov -0x8(%rbp),%rax
0x0000000103c0ad7b <+0023> mov %rdx,(%rax) <--- 'this' gets clobbered here
It's loading the vtable, but I don't know what the
lea 0x10(%rax),%rdx
is trying to do.
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