GNU bug report logs - #9910
valgrind warning in coding.c:coding_set_destination

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Message #8 received at 9910 <at> debbugs.gnu.org (full text, mbox):

From: Kenichi Handa <handa <at> m17n.org>
To: Dan Nicolaescu <dann <at> gnu.org>
Cc: 9910 <at> debbugs.gnu.org
Subject: Re: bug#9910: valgrind warning in coding.c:coding_set_destination
Date: Mon, 07 Nov 2011 11:38:35 +0900

In article <yxq1utugnxb.fsf <at> fencepost.gnu.org>, Dan Nicolaescu <dann <at> gnu.org> writes:

> valgrind ./temacs 

> produces this warning:

> ==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.

I fixed it.  But as "valgrind ./temacs" segfaults in my
environment, I can't confirm the fix.  Please check if the
fix is correct or not.

---
Kenichi Handa
handa <at> m17n.org

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