In MUL_UNc() cast to comp2_t

Otherwise, when comp1_t is 16 bits wide, we can end up with a signed
integer overflow.

diff --git a/pixman/pixman-combine.h.template b/pixman/pixman-combine.h.template
index 67ed309..53afcd2 100644 (file)
--- a/pixman/pixman-combine.h.template
+++ b/pixman/pixman-combine.h.template
@@ -25,7 +25,7 @@
  */
 
 #define MUL_UNc(a, b, t)                                               \
-    ((t) = (a) * (b) + ONE_HALF, ((((t) >> G_SHIFT ) + (t) ) >> G_SHIFT ))
+    ((t) = (a) * (comp2_t)(b) + ONE_HALF, ((((t) >> G_SHIFT ) + (t) ) >> G_SHIFT ))
 
 #define DIV_UNc(a, b)                                                  \
     (((comp2_t) (a) * MASK) / (b))