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drw_text: don't segfault when called with 0 width

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this patch just rejects *any* 0 width draws, which is surely an error by
the caller.

this also guards against cases where the width is too small for the
ellipsis to fit, so ellipsis_w will remain 0.
reported by Bakkeby <bakkeby@gmail.com>

ref. https://git.suckless.org/dmenu/commit/e4827b0c4048718ab06670cf60ef68d028fe7fc4.html
This commit is contained in:
bakkeby 2022-04-17 10:06:08 +02:00
parent 4ceaa81c0d
commit 4b832e8917
1 changed files with 1 additions and 1 deletions
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2
drw.c
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@ -448,7 +448,7 @@ drw_text(Drw *drw, int x, int y, unsigned int w, unsigned int h, unsigned int lp
const char *ellipsis = "...";
static unsigned int ellipsis_width = 0;
if (!drw || (render && !drw->scheme) || !text || !drw->fonts)
if (!drw || (render && (!drw->scheme || !w)) || !text || !drw->fonts)
return 0;
if (!render) {