http://gcc.gnu.org/bugzilla/show_bug.cgi?id=56897
Uros Bizjak <ubizjak at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |WAITING
Last reconfirmed| |2013-04-15
Ever Confirmed|0 |1
--- Comment #3 from Uros Bizjak <ubizjak at gmail dot com> 2013-04-15 07:53:58
UTC ---
(In reply to comment #0)
> To reproduce, try this out:
>
> unsigned long foo = 0x010203040a0b0c0d;
> printf("%02x", *((char *)&foo + 7));
>
> With -O (and onwards) it will turn out to be zero; at every &X+15,
> &X+23, etc. Depending on the offset from the frame pointer.
Please create a self-sufficient executable testcase, following the instructions
at [1]. I was not able to confirm the problem from the lines you posted.
[1] http://gcc.gnu.org/bugs/
