Re: gdb/862: regression: gdb.base/selftest.exp: "backtrace through signal handler"

[Daniel Jacobowitz <drow at mvista dot com>]

The following reply was made to PR gdb/862; it has been noted by GNATS.

From: Daniel Jacobowitz <drow@mvista.com>
To: mec@shout.net
Cc: gdb-gnats@sources.redhat.com
Subject: Re: gdb/862: regression: gdb.base/selftest.exp: "backtrace through signal handler"
Date: Tue, 3 Dec 2002 00:08:48 -0500

 On Mon, Dec 02, 2002 at 11:45:20PM -0000, mec@shout.net wrote:
 > 
 > >Number:         862
 > >Category:       gdb
 > >Synopsis:       regression: gdb.base/selftest.exp: "backtrace through signal handler"
 > >Confidential:   no
 > >Severity:       serious
 > >Priority:       medium
 > >Responsible:    unassigned
 > >State:          open
 > >Class:          sw-bug
 > >Submitter-Id:   net
 > >Arrival-Date:   Mon Dec 02 15:48:00 PST 2002
 > >Closed-Date:
 > >Last-Modified:
 > >Originator:     mec@shout.net
 > >Release:        gdb_5_3-branch%20021125, HEAD%20021125
 > >Organization:
 > >Environment:
 > target = native, host = i686-pc-linux-gnu%rh-8, gdb = HEAD%20021125, gcc = 3.2.1, binutils = 2.13.1, glibc = 2.2.93-5-rh, gformat = dwarf-2
 > >Description:
 > gdb.base/selftest.exp runs an inferior gdb.  It sends a SIGINT to the inferior and then does a backtrace and expects to see certain stuff on the stack.  In particular, it expects to see a function "main" in a file "*main.c".
 > 
 > As of 2002-09-26, function "main" moved from main.c to gdb.c, so the test pattern in selftest.exp is out of sync.
 > 
 > Amusingly, the test pattern also wants to see the string "read" somewhere in there.  gdb doesn't call "read" on my host; it calls "poll".  But there is a "readline" in the filenames on the stack so that part of the pattern matches by coincidence.
 > >How-To-Repeat:
 > Run selftest.exp on any gdb after 2002-09-26.  The bug ought to be platform independent.  It doesn't rely on signal handler semantics; it relies on the function "main" living in a file named "*main.c".
 > >Fix:
 > Update the pattern in selftest.exp.
 
 Patch was submitted on 11/05, not reviewed yet.
 
 -- 
 Daniel Jacobowitz
 MontaVista Software                         Debian GNU/Linux Developer