Bug 136884 – gcc segfaults due to ICE

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Bug 136884 - gcc segfaults due to ICE

Summary:	gcc segfaults due to ICE

Status:	CLOSED RAWHIDE

Aliases:	None

Product:	Fedora
Classification:	Fedora
Component:	gcc (Show other bugs)
Sub Component:
Version:	rawhide
Hardware:	x86_64 Linux

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

URL:
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Keywords:

Depends On:
Blocks:	116244
	Show dependency tree / graph

Reported:	2004-10-22 16:31 EDT by Eido Inoue
Modified:	2007-11-30 17:10 EST (History)
CC List:	0 users

See Also:
Fixed In Version:	3.4.2-6.fc3
Doc Type:	Bug Fix
Doc Text:
Story Points:	---
Clone Of:
Environment:
Last Closed:	2004-10-26 13:29:29 EDT
Type:	---
Regression:	---
Mount Type:	---
Documentation:	---
CRM:
Verified Versions:
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RHEL 7.3 requirements from Atomic Host:
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Attachments	(Terms of Use)
C preprocessor output (110.44 KB, text/plain) 2004-10-22 16:41 EDT, Eido Inoue	no flags	Details
Add an attachment (proposed patch, testcase, etc.)

Groups: None (edit)

Description Eido Inoue 2004-10-22 16:31:19 EDT

Description of problem:
gcc segfaults internally while compiling C file braille.c in
brltty-3.2-5.src.rpm

Version-Release number of selected component (if applicable):
gcc-3.2.3-34

How reproducible:
always

Steps to Reproduce:
1. bhc dist-fc3-HEAD devserv:~havill/brltty-3.2-5.src.rpm

  
Actual results:
make[2]: Entering directory
`/usr/src/build/474312-x86_64/BUILD/brltty-3.2/Drivers/LogText'
x86_64-redhat-linux-gcc -O2 -g -pipe -m64 -Wall -I. -I../../ -I.
-I../../ -D_POSIX_C_SOURCE=2 -D_BSD_SOURCE -D_XOPEN_SOURCE
-DHAVE_CONFIG_H -fPIC '-DBRLDRIVER="lt"'
'-DBRLHELP="/etc/brltty/brltty-lt.hlp"' -c ./braille.c
./braille.c: In function `sendData':
./braille.c:216: internal compiler error: Segmentation fault
Please submit a full bug report,
with preprocessed source if appropriate.
See <URL:http://bugzilla.redhat.com/bugzilla> for instructions.
Preprocessed source stored into /tmp/ccRJJ5YP.out file, please attach
this to your bugreport.

Additional info:
Not encountering problems on other archs

Comment 1 Eido Inoue 2004-10-22 16:41:23 EDT

Created attachment 105674 [details]
C preprocessor output

Comment 2 Jakub Jelinek 2004-10-23 13:09:01 EDT

Simplified testcase:
/* { dg-do compile } */
/* { dg-options "-O2 -g" } */

static void
foo (unsigned char x)
{
  unsigned char a[5 + x];
}

void
bar (void)
{
  foo (80);
}

Works with both gcc 3.3.4 and 4.0.0.

Comment 3 Jakub Jelinek 2004-10-23 17:58:02 EDT

http://gcc.gnu.org/ml/gcc-patches/2004-10/msg01995.html

Not sure how often it triggers though.  It has been introduced on
2004-10-13 in CVS (i.e. only in gcc-3.4.2-6 built on Oct, 18th),
so we probably haven't built enough code to see whether this is
something exceptional or happens more often (in which case we should
put it into FC3).

Comment 4 Jakub Jelinek 2004-10-26 13:29:29 EDT

Should be fixed in gcc-3.4.2-6.fc3.

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