toolchain/39019: [dM] gcc crash

[der Mouse <mouse%Rodents-Montreal.ORG@localhost>]

>Number:         39019
>Category:       toolchain
>Synopsis:       [dM] cc1 SIGILL crash
>Confidential:   no
>Severity:       non-critical
>Priority:       low
>Responsible:    toolchain-manager
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Sun Jun 22 15:50:00 +0000 2008
>Originator:     der Mouse
>Release:        NetBSD 4.0
>Organization:
        Dis-
>Environment:
System: NetBSD NetBSD-4-0.Rodents.Montreal.QC.CA 4.0 NetBSD 4.0 (GENERIC) #0: 
Sun Dec 16 00:20:10 PST 2007 
builds@wb34:/home/builds/ab/netbsd-4-0-RELEASE/i386/200712160005Z-obj/home/builds/ab/netbsd-4-0-RELEASE/src/sys/arch/i386/compile/GENERIC
 i386
Architecture: i386
Machine: i386
>Description:
        When run on a suitable input file, the compiler crashes:

        cc: Internal error: Illegal instruction (program cc1)
        Please submit a full bug report.
        See <URL:http://www.NetBSD.org/Misc/send-pr.html> for instructions.

        Reading /usr/src/gnu/dist/gcc4/gcc/doc/bugreport.texi leads me
        to think the FSF considers this a bug, so they presumably want
        to hear about it.
>How-To-Repeat:
        (echo int i =; dd if=/dev/zero bs=1048576 count=10 | tr \\0 \() > z.c
        cc -c z.c
>Fix:
        None.  This is a contrived case, of course.  The gcc shipped
        with 4.0 uses a recursive-descent parser, whicih this is
        designed to run out of stack.  Nor is the crash unexpected
        given the input, or, really, even harmful (thus
        non-tricial/low) - but bugreport.texi indicates the FSF
        considers it a bug anyway.

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