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gettextprop: check result of XGetTextProperty (undefined behaviour for XFree)

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Hiltjo Posthuma 2017-11-03 16:36:32 +01:00
parent a9b6a312a7
commit 99f78fa553
1 changed files with 1 additions and 2 deletions
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dwm.c
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@ -910,8 +910,7 @@ gettextprop(Window w, Atom atom, char *text, unsigned int size)
if (!text || size == 0)
return 0;
text[0] = '\0';
XGetTextProperty(dpy, w, &name, atom);
if (!name.nitems)
if (!XGetTextProperty(dpy, w, &name, atom) || !name.nitems)
return 0;
if (name.encoding == XA_STRING)
strncpy(text, (char *)name.value, size - 1);