Bug 25091 – gcc-2.96-71 and -70 internal error (reg-stack.c/change_stack)

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Bug 25091 - gcc-2.96-71 and -70 internal error (reg-stack.c/change_stack)

Summary:	gcc-2.96-71 and -70 internal error (reg-stack.c/change_stack)

Status:	CLOSED DUPLICATE of bug 21002

Aliases:	None

Product:	Red Hat Raw Hide
Classification:	Retired
Component:	gcc (Show other bugs)
Sub Component:
Version:	1.0
Hardware:	i386 Linux

Priority	high Severity medium
Target Milestone:	---
Target Release:	---
Assigned To:	Jakub Jelinek
QA Contact:	David Lawrence
Docs Contact:

URL:
Whiteboard:
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Depends On:
Blocks:
	Show dependency tree / graph

Reported:	2001-01-27 16:18 EST by Mike Shaver
Modified:	2007-03-26 23:39 EDT (History)
CC List:	1 user (show)

See Also:
Fixed In Version:
Doc Type:	Bug Fix
Doc Text:
Story Points:	---
Clone Of:
Environment:
Last Closed:	2001-02-16 12:49:40 EST
Type:	---
Regression:	---
Mount Type:	---
Documentation:	---
CRM:
Verified Versions:
Category:	---
oVirt Team:	---
RHEL 7.3 requirements from Atomic Host:
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Attachments	(Terms of Use)
test case: stripped-down version of e_acos.c (913 bytes, text/plain) 2001-01-27 16:19 EST, Mike Shaver	no flags	Details
Add an attachment (proposed patch, testcase, etc.)

Groups: None (edit)

Description Mike Shaver 2001-01-27 16:18:23 EST

When compiling fdlibm (from the Mozilla tree) with
  -O2 -finstrument-functions
I get an internal compiler error:

cc -Wall -O2 -finstrument-functions   -c -o e_acos.o e_acos.c
e_acos.c: In function `__ieee754_acos':
e_acos.c:37: Internal compiler error in change_stack, at reg-stack.c:2214

  -O -finstrument-functions
and
  -finstrument-functions
both work fine.

dbaron reports that it happens with -70 as well.

I'll attach a minimized test case.

Comment 1 Mike Shaver 2001-01-27 16:19:06 EST

Created attachment 8390 [details]
test case: stripped-down version of e_acos.c

Comment 2 Jakub Jelinek 2001-01-27 18:34:17 EST

This is probably dup of #21002, -finstrument-functions does not play
well with reg-stack and I haven't had time yet to debug this
(I consider it low priority though since -finstrument-functions is
a rarely used switch).

Comment 3 Christopher Blizzard 2001-02-16 12:49:35 EST

I would get crashes in gcc with that flag in a lot of our C++ test cases, too. 
No profiler for us! :)

Comment 4 Jakub Jelinek 2001-03-14 11:26:12 EST


*** This bug has been marked as a duplicate of 21002 ***

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