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From: emmerik@csee.uq.edu.au
To: gcc-gnats@gcc.gnu.org
Subject: c/2035: Internal compiler error on complex casts. Only with optimisation.
Date: Sun, 01 Apr 2001 00:00:00 -0000	[thread overview]
Message-ID: <20010220070516.2173.qmail@sourceware.cygnus.com> (raw)

>Number:         2035
>Category:       c
>Synopsis:       Internal compiler error on complex casts. Only with optimisation.
>Confidential:   no
>Severity:       serious
>Priority:       low
>Responsible:    unassigned
>State:          open
>Class:          ice-on-legal-code
>Submitter-Id:   net
>Arrival-Date:   Mon Feb 19 23:06:00 PST 2001
>Closed-Date:
>Last-Modified:
>Originator:     Mike Van Emmerik
>Release:        unknown-1.0
>Organization:
>Environment:
Sparc solaris 2.8
 $ gcc -v
Reading specs from /opt/local/stow/gcc-2.95.2.1/lib/gcc-lib/sparc-sun-solaris2.8/2.95.2.1/specs
gcc version 2.95.2.1 19991024 (release)
>Description:
ICE on legal code. Note: compiles OK with no optimisations. Works with Sun C compiler.

I strongly suspect this line:
 *(int32*)&d65.f.f35= *((int32*)(((int*)(&v8))+(1)));
This unusual but correct code is machine generated (!).

$ make
gcc -w -O4    -c -o main.o main.c
main.c: In function `main':
main.c:64: Internal compiler error in `extract_bit_field', at expmed.c:1081
Please submit a full bug report.
See <URL: http://www.gnu.org/software/gcc/faq.html#bugreport > for instructions.

Note that the URL given is redirected now.
>How-To-Repeat:
gcc -w -O4    -c -o main.o main.c
Withiut the -O4, compiles fine.
Working program should output:
"Two thirds is 0.666666666667"

Probably offending line is:
 *(int32*)&d65.f.f35= *((int32*)(((int*)(&v8))+(1)));
>Fix:

>Release-Note:
>Audit-Trail:
>Unformatted:
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             reply	other threads:[~2001-04-01  0:00 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2001-04-01  0:00 emmerik [this message]
2001-06-22  3:43 jsm28
2001-06-25  0:00 jsm28

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