From: Dan Nicolaescu <dann@gnu.org>
To: Eli Zaretskii <eliz@gnu.org>
Cc: emacs-devel@gnu.org
Subject: Re: valgrind warnings [Re: Emacs bzr memory footprint]
Date: Fri, 28 Oct 2011 16:20:25 -0400 [thread overview]
Message-ID: <yxqipn8lvg6.fsf@fencepost.gnu.org> (raw)
In-Reply-To: <yxqaa8ljpub.fsf_-_@fencepost.gnu.org> (Dan Nicolaescu's message of "Fri, 28 Oct 2011 07:52:12 -0400")
Dan Nicolaescu <dann@gnu.org> writes:
> Eli Zaretskii <eliz@gnu.org> writes:
>
>> So I imagine one needs to do this (100% untested):
>>
>> ./temacs -l loadup
>> M-x load-file RET ~/.emacs RET
>
> Actually
> ./temacs
>
> is enough.
>
> On Fedora 15 with valgrind-3.6.1 it is possible to run
>
> valgrind ./temacs
>
> Valgrind produces these warnings, maybe some of them are interesting:
>
> ==30382== Conditional jump or move depends on uninitialised value(s)
> ==30382== at 0x499251: coding_set_destination (coding.c:1046)
> ==30382== by 0x4B477A: decode_coding (coding.c:7022)
> ==30382== by 0x4B7317: decode_coding_object (coding.c:7671)
> ==30382== by 0x63610F: Fcall_process (callproc.c:813)
> ==30382== by 0x5D6C07: Ffuncall (eval.c:2956)
> ==30382== by 0x5D5ECA: Fapply (eval.c:2479)
> ==30382== by 0x5D6C07: Ffuncall (eval.c:2956)
> ==30382== by 0x622C5B: exec_byte_code (bytecode.c:785)
> ==30382== by 0x5D77BA: funcall_lambda (eval.c:3205)
> ==30382== by 0x5D6F4C: Ffuncall (eval.c:3023)
> ==30382== by 0x622C5B: exec_byte_code (bytecode.c:785)
> ==30382== by 0x5D77BA: funcall_lambda (eval.c:3205)
This looks like setup_coding_system (or whatever else initializes struct
coding_system) does not initialize the src_pos field.
>
> ==30382== Conditional jump or move depends on uninitialised value(s)
> ==30382== at 0x6302A9: send_process (process.c:5398)
> ==30382== by 0x630DC8: Fprocess_send_string (process.c:5648)
> ==30382== by 0x5D6D61: Ffuncall (eval.c:2977)
> ==30382== by 0x622C5B: exec_byte_code (bytecode.c:785)
> ==30382== by 0x5D77BA: funcall_lambda (eval.c:3205)
> ==30382== by 0x5D6F4C: Ffuncall (eval.c:3023)
> ==30382== by 0x622C5B: exec_byte_code (bytecode.c:785)
> ==30382== by 0x5D77BA: funcall_lambda (eval.c:3205)
> ==30382== by 0x5D6F4C: Ffuncall (eval.c:3023)
> ==30382== by 0x622C5B: exec_byte_code (bytecode.c:785)
> ==30382== by 0x5D77BA: funcall_lambda (eval.c:3205)
> ==30382== by 0x5D6F4C: Ffuncall (eval.c:3023)
similarly the struct coding_system.src_multibyte needs to be
initialized.
> ==30382== Conditional jump or move depends on uninitialised value(s)
> ==30382== at 0x636022: Fcall_process (callproc.c:799)
> ==30382== by 0x5D6C07: Ffuncall (eval.c:2956)
> ==30382== by 0x5D5ABB: Fapply (eval.c:2422)
> ==30382== by 0x5D6C07: Ffuncall (eval.c:2956)
> ==30382== by 0x622C5B: exec_byte_code (bytecode.c:785)
> ==30382== by 0x5D77BA: funcall_lambda (eval.c:3205)
> ==30382== by 0x5D6F4C: Ffuncall (eval.c:3023)
> ==30382== by 0x5D5ABB: Fapply (eval.c:2422)
> ==30382== by 0x5D6C07: Ffuncall (eval.c:2956)
> ==30382== by 0x622C5B: exec_byte_code (bytecode.c:785)
> ==30382== by 0x5D77BA: funcall_lambda (eval.c:3205)
> ==30382== by 0x5D6F4C: Ffuncall (eval.c:3023)
similarly the struct coding_system.dst_multibyte needs to be
initialized.
> ==30382== Use of uninitialised value of size 8
> ==30382== at 0x5B7000: mark_object (alloc.c:5674)
> ==30382== by 0x5B4C9B: mark_maybe_object (alloc.c:4152)
> ==30382== by 0x5B4FE6: mark_memory (alloc.c:4274)
> ==30382== by 0x5B507E: mark_stack (alloc.c:4532)
> ==30382== by 0x5B5F48: Fgarbage_collect (alloc.c:5119)
> ==30382== by 0x5D69F0: Ffuncall (eval.c:2911)
> ==30382== by 0x5D64CA: call2 (eval.c:2758)
> ==30382== by 0x5809AA: Finsert_file_contents (fileio.c:4144)
> ==30382== by 0x5D6E00: Ffuncall (eval.c:2990)
> ==30382== by 0x622C5B: exec_byte_code (bytecode.c:785)
> ==30382== by 0x5D77BA: funcall_lambda (eval.c:3205)
> ==30382== by 0x5D6F4C: Ffuncall (eval.c:3023)
It would be interesting to know if the gc warnings are relevant...
next prev parent reply other threads:[~2011-10-28 20:20 UTC|newest]
Thread overview: 113+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-10-13 9:24 Emacs bzr memory footprint Carsten Mattner
2011-10-13 10:01 ` Eli Zaretskii
2011-10-13 10:33 ` Andreas Schwab
2011-10-13 10:46 ` Eli Zaretskii
2011-10-13 13:08 ` Carsten Mattner
2011-10-13 13:38 ` Eli Zaretskii
2011-10-13 15:22 ` Miles Bader
2011-10-13 15:30 ` Eli Zaretskii
2011-10-13 16:16 ` Stefan Monnier
2011-10-13 17:33 ` Dmitry Antipov
2011-10-13 18:42 ` Eli Zaretskii
2011-10-14 3:09 ` Dmitry Antipov
2011-10-13 16:46 ` Stephen J. Turnbull
2011-10-13 16:59 ` Carsten Mattner
2011-10-13 13:13 ` Carsten Mattner
2011-10-13 13:43 ` Eli Zaretskii
2011-10-13 14:10 ` Dave Abrahams
2011-10-13 14:46 ` Eli Zaretskii
2011-10-13 15:05 ` Dave Abrahams
2011-10-13 14:22 ` Stefan Monnier
2011-10-13 16:55 ` Carsten Mattner
2011-10-13 17:09 ` Stefan Monnier
2011-10-14 12:11 ` Carsten Mattner
2011-10-14 21:02 ` John Wiegley
2011-10-15 1:22 ` Stefan Monnier
2011-10-13 17:22 ` Richard Riley
2011-10-13 16:12 ` Chong Yidong
2011-10-13 20:18 ` chad
2011-10-14 12:13 ` Carsten Mattner
2011-10-14 12:18 ` Carsten Mattner
2011-10-14 15:49 ` Sven Joachim
2011-10-14 16:30 ` Ted Zlatanov
2011-10-14 16:48 ` Sven Joachim
2011-10-14 17:16 ` Carsten Mattner
2011-10-15 18:12 ` Sven Joachim
2011-10-20 13:35 ` Nix
2011-10-20 23:02 ` John Wiegley
2011-10-21 0:19 ` Nix
2011-10-21 8:19 ` Eli Zaretskii
2011-10-21 12:05 ` Nix
2011-10-21 12:36 ` Eli Zaretskii
2011-10-21 12:47 ` Nix
2011-10-21 14:30 ` Dmitry Antipov
2011-10-21 15:22 ` Nix
2011-10-21 18:29 ` Dmitry Antipov
2011-10-21 18:36 ` Nix
2011-10-21 13:30 ` Stefan Monnier
2011-10-21 15:02 ` Nix
2011-10-21 17:52 ` Stefan Monnier
2011-10-21 19:12 ` Nix
2011-10-21 15:34 ` Dmitry Antipov
2011-10-21 18:00 ` Stefan Monnier
2011-10-21 18:27 ` Óscar Fuentes
2011-10-21 18:58 ` Eli Zaretskii
2011-10-21 19:11 ` Nix
2011-10-21 20:18 ` Eli Zaretskii
2011-10-21 20:21 ` Nix
2011-10-22 7:34 ` Carsten Mattner
2011-10-22 8:30 ` Stephen J. Turnbull
2011-10-22 12:03 ` Carsten Mattner
2011-10-22 16:08 ` Stephen J. Turnbull
2011-10-27 22:10 ` Ted Zlatanov
2011-10-28 6:40 ` Eli Zaretskii
2011-10-28 9:34 ` Stephen J. Turnbull
2011-10-28 9:47 ` Eli Zaretskii
2011-10-28 10:22 ` Stephen J. Turnbull
2011-10-28 10:36 ` Eli Zaretskii
2011-10-28 11:52 ` valgrind warnings [Re: Emacs bzr memory footprint] Dan Nicolaescu
2011-10-28 14:08 ` Stephen J. Turnbull
2011-10-28 14:38 ` Dan Nicolaescu
2011-10-28 15:17 ` Chong Yidong
2011-10-28 15:35 ` Eli Zaretskii
2011-10-28 15:27 ` Eli Zaretskii
2011-10-28 16:34 ` Dan Nicolaescu
2011-10-28 18:36 ` Eli Zaretskii
2011-10-28 18:51 ` Eli Zaretskii
2011-10-28 18:52 ` Dan Nicolaescu
2011-10-28 19:03 ` Eli Zaretskii
2011-10-28 15:08 ` Ted Zlatanov
2011-12-04 21:11 ` Florian Weimer
2011-10-28 20:20 ` Dan Nicolaescu [this message]
2011-10-29 3:40 ` Chong Yidong
2011-10-29 7:04 ` Andreas Schwab
2011-10-29 16:25 ` Stefan Monnier
2011-11-04 12:51 ` Dan Nicolaescu
2011-11-04 13:08 ` Andreas Schwab
2011-11-04 15:50 ` valgrind warnings Paul Eggert
2011-11-04 17:37 ` valgrind warnings [Re: Emacs bzr memory footprint] Stefan Monnier
2011-11-04 19:10 ` Dan Nicolaescu
2011-11-04 20:56 ` Paul Eggert
2011-11-05 22:08 ` Dan Nicolaescu
2011-11-06 2:34 ` Paul Eggert
2011-11-06 12:37 ` Dan Nicolaescu
2011-11-07 1:13 ` Paul Eggert
2011-10-29 9:10 ` Eli Zaretskii
2011-10-22 8:44 ` Emacs bzr memory footprint Sven Joachim
2011-10-22 11:57 ` Carsten Mattner
2011-10-23 18:04 ` Stefan Monnier
2011-10-25 17:35 ` Nix
2011-10-25 20:23 ` Stefan Monnier
2011-10-25 20:34 ` Nix
2011-10-26 14:52 ` gnutls memory leak [Was: Re: Emacs bzr memory footprint] Chong Yidong
2011-10-27 6:10 ` Chong Yidong
2011-10-27 22:01 ` Ted Zlatanov
2011-10-28 12:04 ` Ted Zlatanov
2011-10-28 17:29 ` Nix
2011-10-27 22:03 ` Ted Zlatanov
2011-10-13 21:23 ` Emacs bzr memory footprint Dan Nicolaescu
2011-10-14 13:04 ` Carsten Mattner
2011-10-14 18:13 ` James Cloos
2011-10-17 20:52 ` Juri Linkov
2011-10-17 23:34 ` James Cloos
2011-10-18 7:24 ` Andreas Schwab
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