[Bug c++/38562] [4.3/4.4 regression] mysql miscompiles and causes testsuite failures

["pinskia at gcc dot gnu dot org" <gcc-bugzilla@gcc.gnu.org>]

------- Comment #11 from pinskia at gcc dot gnu dot org  2008-12-22 01:10 -------
I do get a warning from the trunk though:
log_event.cc: In member function 'virtual bool
Query_log_event::write(IO_CACHE*)':
log_event.cc:1124: warning: dereferencing pointer 'start.519' does break
strict-aliasing rules
log_event.cc:1217: note: initialized from here

Which is exactly what I mentioned except it is a different place I was thinking
of:

    write_str_with_code_and_len((char **)(&start),
                                catalog, catalog_len, 6);


Yes this is now becomes an obvious aliasing issue as you are a "unsigned char
*" as a "char *" which violates C/C++ aliasing rules.

Please report this bug to mysql.


-- 

pinskia at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |RESOLVED
         Resolution|                            |INVALID


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=38562

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