Re: target/5505: Doubts about a patch for OSF

[Rainer Orth <ro at TechFak dot Uni-Bielefeld dot DE>]

The following reply was made to PR target/5505; it has been noted by GNATS.

From: Rainer Orth <ro@TechFak.Uni-Bielefeld.DE>
To: Richard.Kreckel@Uni-Mainz.DE
Cc: gcc-bugs@gcc.gnu.org, gcc-gnats@gcc.gnu.org
Subject: Re: target/5505: Doubts about a patch for OSF
Date: Fri, 22 Feb 2002 23:04:01 +0100 (MET)

 Richard B. Kreckel writes:
 
 > Err, while trying to debug into the problem I discovered something
 > that had escaped my attantion until now: compiling CLN and an example
 > (examples/e, or tests/tests or whatever, never mind) with either -O1, -O2
 > or -O1 -g resulted in a working test (the linker warnings are of course
 > still present) while -O2 -fno-exceptions produced a crashing program.
 > Also, these funny warnings:
 >  as1: Warning: /tmp/ccb8ZbYD.s, line 6: macro instruction used $at
 > appear only when I disable exceptions.  I hadn't noticed it so far because
 > I *always* export CXXFLAGS="-O2 -fno-exceptions" prior to building
 > CLN.  May I ask you how you configured and tested CLN?  You did not
 > specify -fno-exceptions, did you?  Does it work when you do so?
 
 I get those warnings and crashing test programs only when configuring with
 
 CXXFLAGS='-fno-exceptions' CPPFLAGS="-DNO_ASM -DNO_PROVIDE_REQUIRE" \
 	./configure --disable-shared --without-gmp 
 
 CXXFLAGS=-fno-exceptions alone still works.
 
 > Anyways, here is a g++ -v output as you requested:
 
 Thanks, nothing unusual here.
 
 	Rainer