This is the mail archive of the
gcc-bugs@gcc.gnu.org
mailing list for the GCC project.
[Bug c++/42810] Enumeration with sequential values has its for-loop exit condition optimized out.
- From: "pinskia at gcc dot gnu dot org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: 27 Jan 2010 21:08:30 -0000
- Subject: [Bug c++/42810] Enumeration with sequential values has its for-loop exit condition optimized out.
- References: <bug-42810-18694@http.gcc.gnu.org/bugzilla/>
- Reply-to: gcc-bugzilla at gcc dot gnu dot org
------- Comment #19 from pinskia at gcc dot gnu dot org 2010-01-27 21:08 -------
Try:
#include <stdio.h>
main()
{
for (signed char i = 1 ; i >= -2 ; i++)
{
printf( "%d ", i);
}
}
The first one will never overflow the integer range as you have i <= 127 which
is always true with no overflow happening.
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=42810