> On Thu, Feb 15, 2001 at 01:32:48AM -0800, Greg Earle wrote:
>> 
>> I found a problem with NMH 1.04 on my Ultra 5+.  The "scan" program was
>> calling every message in all my folders "?4128":
> ...
>> cc -c -DHAVE_CONFIG_H -I.. -I. -I..  -O2 scansbr.c
> ...
>> ?4128  10/07 "MiNa             hi<<helloooooooo ----------------------------
>> 
>> This only happens if "CFLAGS" is "-O2".
> 
> This sort of thing is *usually* a coding error, and *not* an optimizer
> bug.  Things like uninitialized variables and returning a pointer to an
> automatic variable, for example, may appear to work if the compiler
> isn't as aggressive.

Interesting observation, but given that the same exact code compiled with -O2
on NetBSD/SPARC 1.4.2 works fine, and it didn't work when compiled with -O2 on
NetBSD/SPARC64 1.5, doesn't that shoot that theory?  I suppose the optimizer
could've changed between egcs-2.91.60 19981201 (egcs-1.1.1 release) in 1.4.2
and the gcc-2.95.2 19991024 release in 1.5 ... but the NMH code appears to be
pretty much identical.

(Actually, I lied - I have NMH 1.03 on the 1.4.2 system, and I was building NMH
 1.04 on the Ultra - but I suspect this "scan" code - which is crufty and has
 been around since MH 6.8.x days, easily - hasn't changed much, if at all.)

Anyway, I got it work by not using "-O2", so I'm happy.  Just thought it was
odd that only "-O2" caused the errant behavior.

[Followups set to port-sparc64 only]

	- Greg