Re: tlug: gcc bug in SlackWare 3.3

["Stephen J. Turnbull" <turnbull@example.com>]

>>>>> "Christopher" == Christopher Wiles <wileyc@example.com> writes:

    Christopher> On Fri, 21 Nov 1997, Stephen J. Turnbull wrote:
    >> Well, GCC is up to 2.7.2.3 _specifically_ to fix problems on
    >> Intel platforms.  I don't know what the problems are though.

    Christopher> Uh, not exactly ... code-wise, 2.7.2.1 was the last
    Christopher> real fix (the strength-reduce bug ... Jason, correct
    Christopher> me if I'm wrong).  2.7.2.[23] just enabled glibc
    Christopher> support.

This is probably true ... That's why I have 2.7.2.3.  Of course,
there's no mention of exactly what was done in ChangeLog or NEWS :-(

    >> GCC may be using its own malloc.  Slackware may have decided to
    >> use the Doug Lea malloc which is much faster but not as
    >> well-tested as GNU malloc.  Try installing a different
    >> distribution's GCC (Debian or RedHat) or download binaries from
    >> a Sunsite mirror.

    Christopher> If Slackware is using a libc newer than ... hmmm,
    Christopher> 5.3.19 (whatever was current as of January 1996) then
    Christopher> it's using Doug's malloc.

If you say so.  I just downloaded HJL's source to 5.4.38 and it seems
to say it defaults to GNU malloc.  HJ is not the most accurate of
documenters though.

    >> Look for a big regular expression.

    Christopher> ... also look for a pointer being freed multiple
    Christopher> times.

Definitely not in mailindx.c.  mailindx.c is not running when cc1
craps out.  Something named "indx" probably uses regexps, and regexps
are famous for stressing mamory allocation; it was just a shot in the
dark.

I really don't think poor David is quite up to finding bugs in cc1
... we don't even have it localized to a file, let alone a function
there.
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