From: Nick Roberts <nickrob@snap.net.nz>
To: Daniel Jacobowitz <drow@false.org>
Cc: "Frédéric Riss" <frederic.riss@gmail.com>,
"Denis PILAT" <denis.pilat@st.com>,
"Vladimir Prus" <ghost@cs.msu.su>,
gdb-patches@sources.redhat.com
Subject: Re: [RFC] varobj deletion after the binary has changed
Date: Thu, 25 Jan 2007 20:50:00 -0000 [thread overview]
Message-ID: <17849.6124.750912.589862@kahikatea.snap.net.nz> (raw)
In-Reply-To: <20070125024118.GA10014@nevyn.them.org>
> > If there was a buggy memory access I presume it would manifest itself in
> > the execution of GDB in some way.
>
> No, that's a bad assumption to make about invalid memory access. It's
> often impossible to detect it without some luck or a tool like
> valgrind.
It even identifies the variable object as int:
-var-info-type var1
^done,type="int"
(gdb)
which would seem a remarkable coincidence if it was looking at the wrong
address. I'm not sure what happens on rereading, maybe space gets malloced
for the symbol table, freed and then malloced again. Perhaps with FC5 it's
just fortunate that the symbol table is allocated exactly as before. In any
case, it can segfault if you edit the source file and recompile before
(re)starting execution, so some change is necessary.
--
Nick http://www.inet.net.nz/~nickrob
next prev parent reply other threads:[~2007-01-25 20:50 UTC|newest]
Thread overview: 32+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-01-23 12:32 Denis PILAT
2007-01-23 12:45 ` Daniel Jacobowitz
2007-01-23 12:52 ` Vladimir Prus
2007-01-23 14:49 ` Denis PILAT
2007-01-24 21:49 ` Nick Roberts
2007-01-24 22:07 ` Daniel Jacobowitz
2007-01-24 22:08 ` Frédéric Riss
2007-01-24 22:18 ` Nick Roberts
2007-01-24 22:52 ` Frédéric Riss
2007-01-24 23:14 ` Nick Roberts
2007-01-25 2:41 ` Daniel Jacobowitz
2007-01-25 20:50 ` Nick Roberts [this message]
2007-01-26 7:25 ` Denis PILAT
2007-01-23 17:20 ` Denis PILAT
2007-01-25 17:28 ` Denis PILAT
2007-01-25 22:31 ` Nick Roberts
2007-01-25 23:27 ` Daniel Jacobowitz
2007-01-29 12:39 ` Denis PILAT
2007-01-29 22:12 ` Nick Roberts
2007-01-30 8:49 ` Denis PILAT
2007-01-31 19:07 ` Denis PILAT
2007-01-31 21:29 ` Nick Roberts
2007-02-01 9:49 ` Denis PILAT
2007-02-08 16:41 ` Daniel Jacobowitz
2007-02-08 19:33 ` Nick Roberts
2007-02-08 19:55 ` Daniel Jacobowitz
2007-02-09 15:43 ` Eli Zaretskii
2007-02-12 21:10 ` Denis PILAT
2007-02-13 0:11 ` Nick Roberts
2007-02-13 8:26 ` Denis PILAT
2007-02-20 16:06 ` Andreas Schwab
2007-02-20 16:17 ` Denis PILAT
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