[Webkit-unassigned] [Bug 25033] dtoa.cpp segfaults with g++ 4.4.0

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=25033


craig.schlenter at gmail.com changed:

           What    |Removed                     |Added
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                 CC|                            |craig.schlenter at gmail.com




------- Comment #12 from craig.schlenter at gmail.com  2009-05-18 11:07 PDT -------

dtoa.cpp is getting strict aliasing warnings again in trunk with gcc 4.4 after
the latest changes. I'm running this in chromium but it's the same code as far
as I can tell.

/home/craig/chromium.git/src/third_party/WebKit/JavaScriptCore/wtf/dtoa.cpp: In
function 'void WTF::mult(WTF::BigInt&, const WTF::BigInt&)':
/home/craig/chromium.git/src/third_party/WebKit/JavaScriptCore/wtf/dtoa.cpp:505:
warning: dereferencing pointer '<anonymous>' does break strict-aliasing rules
/home/craig/chromium.git/src/third_party/WebKit/JavaScriptCore/wtf/dtoa.cpp:505:
note: initialized from here
/home/craig/chromium.git/src/third_party/WebKit/JavaScriptCore/wtf/dtoa.cpp:505:
warning: dereferencing pointer 'xc.43' does break strict-aliasing rules
/home/craig/chromium.git/src/third_party/WebKit/JavaScriptCore/wtf/dtoa.cpp:505:
note: initialized from here
/home/craig/chromium.git/src/third_party/WebKit/JavaScriptCore/wtf/dtoa.cpp:517:
warning: dereferencing pointer '<anonymous>' does break strict-aliasing rules
/home/craig/chromium.git/src/third_party/WebKit/JavaScriptCore/wtf/dtoa.cpp:517:
note: initialized from here
/home/craig/chromium.git/src/third_party/WebKit/JavaScriptCore/wtf/dtoa.cpp:517:
warning: dereferencing pointer 'xc.43' does break strict-aliasing rules
/home/craig/chromium.git/src/third_party/WebKit/JavaScriptCore/wtf/dtoa.cpp:517:
note: initialized from here
/home/craig/chromium.git/src/third_party/WebKit/JavaScriptCore/wtf/dtoa.cpp: In
function 'void WTF::dtoa(char*, double, int, int*, int*, char**)':
/home/craig/chromium.git/src/third_party/WebKit/JavaScriptCore/wtf/dtoa.cpp:293:
warning: '<anonymous>' may be used uninitialized in this function
/home/craig/chromium.git/src/third_party/WebKit/JavaScriptCore/wtf/dtoa.cpp:2135:
note: '<anonymous>' was declared here
Compiling
/home/craig/chromium.git/src/sconsbuild/Release/obj/third_party/WebKit/JavaScriptCore/pcre/pcre_compile.os
Compiling
/home/craig/chromium.git/src/sconsbuild/Release/obj/third_party/WebKit/JavaScriptCore/pcre/pcre_exec.os
/home/craig/chromium.git/src/third_party/WebKit/JavaScriptCore/wtf/dtoa.cpp: In
function 'double WTF::strtod(const char*, char**)':
/home/craig/chromium.git/src/third_party/WebKit/JavaScriptCore/wtf/dtoa.cpp:736:
warning: dereferencing pointer 'xc.62' does break strict-aliasing rules
/home/craig/chromium.git/src/third_party/WebKit/JavaScriptCore/wtf/dtoa.cpp:736:
note: initialized from here
/home/craig/chromium.git/src/third_party/WebKit/JavaScriptCore/wtf/dtoa.cpp:736:
warning: dereferencing pointer '<anonymous>' does break strict-aliasing rules
/home/craig/chromium.git/src/third_party/WebKit/JavaScriptCore/wtf/dtoa.cpp:736:
note: initialized from here
/home/craig/chromium.git/src/third_party/WebKit/JavaScriptCore/wtf/dtoa.cpp:743:
warning: dereferencing pointer 'xc.62' does break strict-aliasing rules
/home/craig/chromium.git/src/third_party/WebKit/JavaScriptCore/wtf/dtoa.cpp:743:
note: initialized from here
/home/craig/chromium.git/src/third_party/WebKit/JavaScriptCore/wtf/dtoa.cpp:743:
warning: dereferencing pointer '<anonymous>' does break strict-aliasing rules
/home/craig/chromium.git/src/third_party/WebKit/JavaScriptCore/wtf/dtoa.cpp:743:
note: initialized from here

Rolling back to r42264 makes things happy - I have not tried the in-between
revisions yet.

What's the best plan of action here - reopen this bug (I can't do that) or file
a new one?

Thank you!!


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