search for: db98

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GCC 5 and -Wstrict-aliasing in JSON.h
2018 Aug 14
3
GCC 5 and -Wstrict-aliasing in JSON.h
...he type passed in is a union, why not simply take the union member of the appropriate type? I don't think that GCC would produce this warning unnecessarily. You are in dangerous waters. -- Andrew Haley Java Platform Lead Engineer Red Hat UK Ltd. <https://www.redhat.com> EAC8 43EB D3EF DB98 CC77 2FAD A5CD 6035 332F A671
GCC 5 and -Wstrict-aliasing in JSON.h
2018 Aug 10
4
GCC 5 and -Wstrict-aliasing in JSON.h
在 2018-08-10 06:20, Kim Gräsman 写道: > On Fri, Aug 10, 2018 at 12:02 AM, Jonathan Wakely <jwakely.gcc at gmail.com> > wrote: >> >> If GCC 4.9.3 thinks there's an aliasing violation it might >> misoptimise. It doesn't matter if it's right or not, it matters if it >> treats the code as undefined or not. >> >> And apparently GCC does think
GCC 5 and -Wstrict-aliasing in JSON.h
2018 Aug 10
2
GCC 5 and -Wstrict-aliasing in JSON.h
...;t work, unless the object > stored in the memory at that address was stored as the union type. > > Do not lie to the compiler or it will get its revenge. > > -- > Andrew Haley > Java Platform Lead Engineer > Red Hat UK Ltd. <https://www.redhat.com> > EAC8 43EB D3EF DB98 CC77 2FAD A5CD 6035 332F A671 > -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.llvm.org/pipermail/llvm-dev/attachments/20180810/ba826ae9/attachment.html>
GCC 5 and -Wstrict-aliasing in JSON.h
2018 Aug 12
4
GCC 5 and -Wstrict-aliasing in JSON.h
I did some more extensive testing and found that all GCCs older than 7 trigger the warning, but only if CMAKE_BUILD_TYPE=Release (which I guess indicates optimizations are enabled). There's a patch up for disabling the warning here: https://reviews.llvm.org/D50607. I still feel a little uncomfortable, because I think Jonathan makes an excellent point -- if GCC thinks there's a
SMBD Crash
2012 Apr 22
1
SMBD Crash
...2E8B> /usr/lib/ libxml2.2.dylib 0x7fff887b2000 - 0x7fff88970fff libicucore.A.dylib 40.0.0 (compatibility 1.0.0) <4274FC73-A257-3A56-4293-5968F3428854> /usr/lib/ libicucore.A.dylib 0x7fff88983000 - 0x7fff88992fff com.apple.NetFS 3.2.2 (3.2.2) <7CCBD70E-BF31-A7A7-DB98-230687773145> /System/Library/ Frameworks/NetFS.framework/Versions/A/NetFS 0x7fff8a217000 - 0x7fff8a258fff com.apple.SystemConfiguration 1.10.8 (1.10.2) <78D48D27-A9C4-62CA-2803- D0BBED82855A> /System/Library/Frameworks/SystemConfiguration.framework/ Versions/A/SystemConfigu...