From: Andrew Cagney <ac131313@redhat.com>
To: Michal Ludvig <mludvig@suse.cz>
Cc: GDB Patches <gdb-patches@sources.redhat.com>
Subject: Re: [patch/rfc] Add a sentinel frame
Date: Tue, 25 Feb 2003 22:41:00 -0000 [thread overview]
Message-ID: <3E5BF1AD.4010005@redhat.com> (raw)
In-Reply-To: <3E5BD957.9010605@suse.cz>
Michael,
A shallow analysis of the problem is that, when the PC is in the frame
dummy, read_fp() (i.e., cfi_read_fp()) returns NULL (an invalid frame).
The new code is checking for this and bailing out. Disabling the test
doesn't exactly improve things:
(gdb) finish
Inside legacy frame
Run till exit from #0 marker2 (a=99) at
/home/cagney/PENDING/2003-02-24-prev-checks/src/gdb/testsuite/gdb.base/break.c:49
cfi_read_fp -> 0x0000000000000000
Can't pop dummy frame!
(gdb)
since the search for a NULL frame in the dummy_frame_stack will fail
(see dummy_frame_pop).
Andrew
next prev parent reply other threads:[~2003-02-25 22:41 UTC|newest]
Thread overview: 37+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-01-23 20:54 Andrew Cagney
2003-01-27 21:42 ` Andrew Cagney
2003-02-10 23:36 ` Michal Ludvig
2003-02-11 16:48 ` Andrew Cagney
2003-02-18 11:21 ` Michal Ludvig
2003-02-19 13:27 ` Andrew Cagney
2003-02-19 14:04 ` Daniel Jacobowitz
2003-02-19 16:46 ` Andrew Cagney
2003-02-19 16:56 ` Daniel Jacobowitz
2003-02-19 17:11 ` Andrew Cagney
2003-02-19 17:17 ` Daniel Jacobowitz
2003-02-19 17:46 ` Andrew Cagney
2003-02-19 17:56 ` Daniel Jacobowitz
2003-02-19 18:36 ` Andrew Cagney
2003-02-19 18:52 ` Daniel Jacobowitz
2003-02-19 20:22 ` Andrew Cagney
2003-02-19 20:39 ` Daniel Jacobowitz
2003-02-19 21:21 ` Andrew Cagney
2003-02-20 19:32 ` Daniel Jacobowitz
2003-02-19 21:45 ` Andrew Cagney
2003-02-20 19:32 ` Daniel Jacobowitz
2003-02-25 16:24 ` Michal Ludvig
2003-02-25 19:43 ` Andrew Cagney
2003-02-25 21:00 ` Michal Ludvig
2003-02-25 21:12 ` Andrew Cagney
2003-02-26 8:04 ` Michal Ludvig
2003-02-27 18:27 ` Andrew Cagney
2003-02-28 13:02 ` Michal Ludvig
2003-02-28 15:48 ` Andrew Cagney
2003-03-05 17:38 ` Michal Ludvig
2003-03-05 18:25 ` Andrew Cagney
2003-03-06 16:00 ` Michal Ludvig
2003-03-06 20:13 ` Andrew Cagney
2003-03-06 22:42 ` [RFA] Dummy frames on x86-64 Michal Ludvig
2003-03-07 14:50 ` Andrew Cagney
2003-02-25 22:41 ` Andrew Cagney [this message]
2003-02-25 21:21 [patch/rfc] Add a sentinel frame Michael Elizabeth Chastain
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