Bug 37671

Summary:	RFE: gforth won't compile with gcc-2.96
Product:	[Retired] Red Hat Raw Hide	Reporter:	Jeff Johnson <jbj>
Component:	gcc	Assignee:	Jakub Jelinek <jakub>
Status:	CLOSED CURRENTRELEASE	QA Contact:	David Lawrence <dkl>
Severity:	medium	Docs Contact:
Priority:	low
Version:	1.0	Keywords:	FutureFeature
Target Milestone:	---
Target Release:	---
Hardware:	i386
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	Enhancement
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2003-02-26 22:47:23 UTC	Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:

Description Jeff Johnson 2001-04-25 19:09:08 UTC

This is just a FYI, and is really a gforth, not a gcc problem.

However, since I've just dropped gforth compiled with egcs
into powertools-7.2, I figgered I'd report the problem.

Nuke the package in powertools if you want <shrug>

Comment 1 Need Real Name 2001-05-06 06:16:00 UTC

This bug is probably due to gcc-2.96 producing incorrect code (guess based on
experience with similar symptoms in other settings).

Comment 2 Jakub Jelinek 2001-05-07 11:54:58 UTC

Yeah, engine() couldn't be shorter...
So far I've found one GCSE bug which caused engine-ditc.o to be miscompiled.
With this fixed, there is some other bug which causes engine.o to be miscompiled
with -fomit-frame-pointer (taking this one out fixes it).
I'll dig some more.

Comment 3 Need Real Name 2001-12-13 23:49:34 UTC

I have now tested this a little more and found that Gforts works with
gcc-2.96 on Intel if it is configured with --enable-force-reg.  I
found that I get a good result (correct and fast code) with gcc
version 2.96 20000731 (Red Hat Linux 7.1 2.96-81) by configuring in
the following way:

CC="gcc -fno-gcse" ./configure --enable-force-reg --enable-indirect-threaded

I will look into the generated code for the crashing versions soon.

Comment 4 Jeff Law 2003-02-26 22:47:23 UTC

The compiler included in Red Hat Linux 7.1 and later versions of Red Hat Linux
compiles gforth-5.0 correctly.  The errata compiler for Red Hat Linux 7.0 
(gcc-2.96-85) also compiles gforth-5.0 correctly.