From: Dave Airlie <airlied@redhat.com>
Date: Thu, 11 Apr 2019 10:36:03 +0000 (+1000)
Subject: swrast: fix undefined shift of 1 << 31
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=4690f9072828308bae59cfa549490e166fb60192;p=mesa.git

swrast: fix undefined shift of 1 << 31

Pointed out by coverity

Reviewed-by: Eric Engestrom <eric.engestrom@intel.com>
Reviewed-by: Roland Scheidegger <sroland@vmware.com>
---

diff --git a/src/mesa/swrast/s_span.c b/src/mesa/swrast/s_span.c
index f50b549a97f..184a37c99b8 100644
--- a/src/mesa/swrast/s_span.c
+++ b/src/mesa/swrast/s_span.c
@@ -769,7 +769,7 @@ clip_span( struct gl_context *ctx, SWspan *span )
           * For arrays of values, shift them left.
           */
          for (i = 0; i < VARYING_SLOT_MAX; i++) {
-            if (span->interpMask & (1 << i)) {
+            if (span->interpMask & (1u << i)) {
                GLuint j;
                for (j = 0; j < 4; j++) {
                   span->attrStart[i][j] += leftClip * span->attrStepX[i][j];