From: Hiltjo Posthuma Date: Tue, 20 Oct 2015 21:30:31 +0000 (+0200) Subject: dwm: use ecalloc, prevent theoretical overflow X-Git-Url: https://git.danieliu.xyz/?a=commitdiff_plain;h=e3b7e1d620e18818222c1e5033356ae29dd49e7f;p=dwm.git dwm: use ecalloc, prevent theoretical overflow --- diff --git a/dwm.c b/dwm.c index e2d7423..6295831 100644 --- a/dwm.c +++ b/dwm.c @@ -630,8 +630,7 @@ Monitor * createmon(void) { Monitor *m; - if(!(m = (Monitor *)calloc(1, sizeof(Monitor)))) - die("fatal: could not malloc() %u bytes\n", sizeof(Monitor)); + m = ecalloc(1, sizeof(Monitor)); m->tagset[0] = m->tagset[1] = 1; m->mfact = mfact; m->nmaster = nmaster; @@ -1007,8 +1006,7 @@ manage(Window w, XWindowAttributes *wa) { Window trans = None; XWindowChanges wc; - if(!(c = calloc(1, sizeof(Client)))) - die("fatal: could not malloc() %u bytes\n", sizeof(Client)); + c = ecalloc(1, sizeof(Client)); c->win = w; updatetitle(c); if(XGetTransientForHint(dpy, w, &trans) && (t = wintoclient(trans))) { @@ -1788,8 +1786,7 @@ updategeom(void) { for(n = 0, m = mons; m; m = m->next, n++); /* only consider unique geometries as separate screens */ - if(!(unique = (XineramaScreenInfo *)malloc(sizeof(XineramaScreenInfo) * nn))) - die("fatal: could not malloc() %u bytes\n", sizeof(XineramaScreenInfo) * nn); + unique = ecalloc(nn, sizeof(XineramaScreenInfo)); for(i = 0, j = 0; i < nn; i++) if(isuniquegeom(unique, j, &info[i])) memcpy(&unique[j++], &info[i], sizeof(XineramaScreenInfo));