Bugtraq mailing list archives

Re: GCC 2.7.? /tmp files

From: zack () RABI PHYS COLUMBIA EDU (Zack Weinberg)
Date: Sun, 18 Jan 1998 13:51:12 -0500


On Sat, 17 Jan 1998 21:21:22 +0800, dichro-bugtraq () RCPT TO wrote:

"NB" == Niels Bakker <niels () EURO NET> writes:


   NB> Unless you specify -pipe.  Perhaps our kind
   NB> totally-not-overworked BUGTRAQ moderator :-) would like to see
   NB> whether GNU autoconf sets -pipe automatically when gcc is
   NB> detected?  (I think so but unfortunately don't have much
   NB> sources handy at the moment.)

 Ah, but -pipe has it's own problems with autoconf. It stops various
tests working - eg, the asm tests for ssh, and various assembler tests
for GNU binutils (from memory). As a complete solution, this lacks a
certain something :)


This is because of another bug in gcc 2.7.x: -pipe applied to a .s
file will hang the compiler.  The compiler driver incorrectly assumes
that when -pipe is in use, there's something ahead of the assembler in
the pipeline.

Applying this patch to /.../gcc-lib/MACHINE/VERSION/specs will fix it:

=cut here=
--- specs~      Wed Jun 26 15:14:20 1996
+++ specs       Sun Jan 18 13:46:30 1998
@@ -4,3 +4,3 @@
 *asm_final:
-%{pipe:-}
+%|

=cut here=

and if anyone cares, I have autoconf macros to detect the bug and
hack around it.

The bug is fixed in egcs and I hope also in 2.8.

zw

Current thread:

Re: Xserver stack smashed, (continued)
- - Re: Xserver stack smashed M Shariful Anam (Jan 14)
  - DoS attack: apache (& other) .htaccess Authentication jan () WEDEKIND DE (Jan 14)
    - Re: DoS attack: apache (& other) .htaccess Authentication Marc Slemko (Jan 14)
    - Re: DoS attack: apache (& other) .htaccess Authentication Tim Newsham (Jan 15)
    - Re: DoS attack: apache (& other) .htaccess Authentication Dustin Sallings (Jan 15)
    - Re: DoS attack: apache (& other) .htaccess Authentication Casper Dik (Jan 16)
    - pbomb'ing SSH on a FreeBSD box. Jeff Johnson (Jan 15)
    - Re: pbomb'ing SSH on a FreeBSD box. FrontLine Assembly (Jan 17)
    - Re: DoS attack: apache (& other) .htaccess Authentication Dean Gaudet (Jan 16)
    - Re: GCC 2.7.? /tmp files dichro-bugtraq () RCPT TO (Jan 17)
    - Re: GCC 2.7.? /tmp files Zack Weinberg (Jan 18)
    - Re: GCC 2.7.? /tmp files John Gotts (Jan 19)
    - CERT Vendor-Initiated Bulletin VB-98.01 - excite Aleph One (Jan 19)
    - GCC 2.7.? /tmp files Micha? Zalewski (Jan 15)
    - Re: GCC 2.7.? /tmp files Niels Bakker (Jan 16)
    - pnserver exploit.. Aleph One (Jan 15)
    - Re: pnserver exploit.. Angelos Karageorgiou (Jan 16)
    - Re: pnserver exploit.. Donald van de Weyer (Jan 21)
    - (AUSCERT ESB-98.009) CERT Advisory CA-98.02 - Vulnerabilities in Grant Beattie (Jan 21)
    - Q179148: Settings May Not Be Applied with URL with Short Filename Aleph One (Jan 23)
    - CDE: dtappgather on AIX Marcin Cieslak (Jan 25)

(Thread continues...)