> I have an application which compiles cleanly (on i386 Linux using > options -g -O2 -pedantic -I../include -Wall `pkg-config --cflags > gtk+-2.0`) and executes cleanly using gcc versions 4.1.2 and earlier > (I've tried 3.4.1, 4.0.2 & 4.1.2). > > But starting with version 4.1.3 (I've tried 4.1.3 & 4.2.1) my > application compiles cleanly but does not execute properly. I'm > having a very difficult time trying to pinpoint the exact cause. The > change in execution is subtle but affects the same area of the > application everytime.
> Also, I see on http://gcc.gnu.org/ that it indicates the latest > version in the 4.1.x series is 4.1.2. Is that correct or in error?
That is correct. There is no gcc 4.1.3 release. I don't know what code you are using.
Could it be that 4.1.3 was changed to be the initial release in the 4.2.x series? And somehow I downloaded an "in-between" version?
If you can't figure out why code is not executing properly, a good thing to try is -fno-strict-aliasing. Another is -fno-strict-overflow. If either of those options fixes the problem, then it is likely that your code is accidentally relying on undefined behaviour.
Neither of those two options fixes the problem for me. Could that mean that there's a bug in the 4.2.x series?
-- Marshall Lake -- mlake@xxxxxxxxx -- http://mlake.net
