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[Bug middle-end/66661] incorrect memory access in optimization with flexible array member
- From: "P at draigBrady dot com" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Thu, 25 Jun 2015 11:04:41 +0000
- Subject: [Bug middle-end/66661] incorrect memory access in optimization with flexible array member
- Auto-submitted: auto-generated
- References: <bug-66661-4 at http dot gcc dot gnu dot org/bugzilla/>
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66661
--- Comment #9 from PÃdraig Brady <P at draigBrady dot com> ---
I'm not understanding completely TBH. Are flexible array members not special?
Should the optimizations be restricted on access through the flexible array,
because I presume most/all existing allocation code is not considering this
alignment/padding issue. I certainly didn't notice any examples when looking
into a workaround which I came up with independently. For my reference there
are some notes RE GCC's divergence from C99 re padding and flexi arrays at:
https://sites.google.com/site/embeddedmonologue/home/c-programming/data-alig