On Wed, Apr 26, 2006 at 03:45:00PM -0500, Taral wrote: > I ran afoul of these rules the other day when compiling pgsql 8.1 on > AIX. The configure scripts are set up to look for "xlc" instead of > "cc", and that command invokes cc with "-qalias=ansi", the ANSI-strict > pointer aliasing mode.
PostgreSQL doesn't work with strict aliasing rules. That's why for GCC we pass -fno-strict-aliasing. What's the equivalent option for that compiler? > The fix is one of two things: Well, there are a number of fixes, it's questionable whether it's worth the effort. In GCC you can mark structures that are aliased to avoid the problem (attribute((may_alias)) iirc), but we don't do that. > 3. Get configure to select "cc" instead of "xlc": No code change, > loses some performance. 4. Find the option for disabling strict alias and get configure to add that. Have a nice day, -- Martijn van Oosterhout <kleptog@svana.org> http://svana.org/kleptog/ > From each according to his ability. To each according to his ability to > litigate.
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