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bug#874: Args out of range with new auto-composition implementation
From: |
Juanma Barranquero |
Subject: |
bug#874: Args out of range with new auto-composition implementation |
Date: |
Thu, 4 Sep 2008 17:25:46 +0200 |
On Wed, Sep 3, 2008 at 18:21, Juanma Barranquero <lekktu@gmail.com> wrote:
> emacs -Q -l testbug.el
> C-h H
> M-: (goto-char 276) <RET> ;; or move the cursor to any auto-composed char
> M-x testbug <RET>
>
> => "Args out of range: 274, 274"
Curious. The out of range error is caused by this code in
textprop.c:validate_interval_range
if (!(BUF_BEGV (b) <= XINT (*begin) && XINT (*begin) <= XINT (*end)
&& XINT (*end) <= BUF_ZV (b)))
args_out_of_range (*begin, *end);
At that point,
BUF_BEGV (b) = 1
BUF_ZV (b) = 1
XINT (*begin) = 274
XINT (*end) = 274
where *begin and *end point to the position in buffer "HELLO", but b
(and hence object, from which b is extracted) points to the just
created buffer "testbug":
(gdb) p object
$1 = 64949764
(gdb) xbuffer
$2 = (struct buffer *) 0x3df0e00
(unsigned char *) 0x3de6880 "testbug"
so it's no wonder it fails.