optimization/7799: [3.2/3.3 regression] Loop bug with optimization flag -Os in gcc

[Robert Dewar]

The following reply was made to PR optimization/7799; it has been noted by GNATS.

From: dewar@gnat.com (Robert Dewar)
To: amylaar@onetel.net.uk, segher@koffie.nl
Cc: ehrhardt@mathematik.uni-ulm.de, gcc-bugs@gcc.gnu.org,
	gcc-gnats@gcc.gnu.org, gcc@gcc.gnu.org, nejataydin@superonline.com
Subject: Re: optimization/7799: [3.2/3.3 regression] Loop bug with optimization flag -Os in gcc
Date: Fri, 20 Dec 2002 19:25:45 -0500 (EST)

 > It can't wrap around there, but if pointers are signed, it might straddle 0
 > nonetheless.  This requires, of course, for an aligned start address
 > that the address 0 is not the same as NULL, which AFAICR is something gcc
 > doesn't currently support.
 
 Note that addresses *are* considered signed on the INMOS Transputer as a
 proof of existence :-)