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keypress, check if len > 0 just in case before reading buf

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I'm not sure if this can happen, but check it just in case:

Maybe possible when:

len = XmbLookupString(xic, ev, buf, sizeof buf, &ksym, &status);
len == 0 and case XLookupChars would be executed on a keypress.

Reported by: jb19357 <jb19357@protonmail.com>
Who used Claude to write a report.

I cannot reproduce this issue, but it seems logical.
This commit is contained in:
Hiltjo Posthuma 2026-09-13 20:48:49 +02:00
parent 0785a28f1d
commit 61e0072c3e
1 changed files with 1 additions and 1 deletions
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2
dmenu.c
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@ -414,7 +414,7 @@ keypress(XKeyEvent *ev)
switch(ksym) {
default:
insert:
if (!iscntrl((unsigned char)*buf))
if (len > 0 && !iscntrl((unsigned char)*buf))
insert(buf, len);
break;
case XK_Delete: