guix/gnu/packages/patches/t1lib-CVE-2011-0764.patch

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Description: Don't lookup previous point if there isn't any
Author: Marc Deslauriers <marc.deslauriers@canonical.com>
Forwarded: no
Index: t1lib-5.1.2/lib/type1/type1.c
===================================================================
--- t1lib-5.1.2.orig/lib/type1/type1.c 2011-12-13 14:24:14.280965637 -0600
+++ t1lib-5.1.2/lib/type1/type1.c 2011-12-13 14:25:25.893320747 -0600
@@ -1700,6 +1700,7 @@
long pindex = 0;
/* compute hinting for previous segment! */
+ if (ppoints == NULL) Error0i("RLineTo: No previous point!\n");
FindStems( currx, curry, currx-ppoints[numppoints-2].x, curry-ppoints[numppoints-2].y, dx, dy);
/* Allocate a new path point and pre-setup data */
@@ -1728,6 +1729,7 @@
long pindex = 0;
/* compute hinting for previous point! */
+ if (ppoints == NULL) Error0i("RRCurveTo: No previous point!\n");
FindStems( currx, curry, currx-ppoints[numppoints-2].x, curry-ppoints[numppoints-2].y, dx1, dy1);
/* Allocate three new path points and pre-setup data */
@@ -1903,6 +1905,7 @@
FindStems( currx, curry, 0, 0, dx, dy);
}
else {
+ if (ppoints == NULL) Error0i("RMoveTo: No previous point!\n");
FindStems( currx, curry, ppoints[numppoints-2].x, ppoints[numppoints-2].y, dx, dy);
}