GNU bug report logs -
#11138
23.3; on Windows, message-box does not display line breaks in the message
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Reported by: "Dino Chiesa" <dpchiesa <at> hotmail.com>
Date: Sat, 31 Mar 2012 14:56:02 UTC
Severity: wishlist
Found in version 23.3
Done: Chong Yidong <cyd <at> gnu.org>
Bug is archived. No further changes may be made.
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Message #47 received at 11138 <at> debbugs.gnu.org (full text, mbox):
> From: Juanma Barranquero <lekktu <at> gmail.com>
> Date: Sat, 31 Mar 2012 23:36:01 +0200
> Cc: Drew Adams <drew.adams <at> oracle.com>, 11138 <at> debbugs.gnu.org, dpchiesa <at> hotmail.com
>
> On Sat, Mar 31, 2012 at 20:06, Eli Zaretskii <eliz <at> gnu.org> wrote:
>
> > The Windows port doesn't really have an implementation of a message
> > box, it just pops up a menu. And in a menu, each item is one line.
>
> And some checking for excessive length is missing, BTW:
>
> emacs -Q
> M-: (message-box (make-string (/ most-positive-fixnum 2) ?a) "") <RETURN>
>
> Program received signal SIGSEGV, Segmentation fault.
> 0x754f8dd2 in strcat () from C:\Windows\syswow64\msvcrt.dll
> (gdb) bt
> #0 0x754f8dd2 in strcat () from C:\Windows\syswow64\msvcrt.dll
> #1 0x64c9000c in ?? ()
> #2 0x012b68f4 in fill_in_menu (menu=0x37640627, wv=0x9f1740) at w32menu.c:1564
This crash should be fixed in trunk revision 107723. Now even your
crazy test case doesn't crash, just says that it ran out of memory
after a while (kids, don't try that at home).
Btw, it looks like MS-Windows menus cannot have strings longer than
64K, although I cannot find this documented anywhere.
This bug report was last modified 12 years and 272 days ago.
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