commit 3f2879bf60397a9fdfd6b80d073a9d21b88fac1e
author Glenn Randers-Pehrson <glennrp at users.sourceforge.net> Thu Jun 23 11:18:32 2016 -0500
committer Glenn Randers-Pehrson <glennrp at users.sourceforge.net> Thu Jun 23 11:26:59 2016 -0500
tree 70f5bd6b385f4545e265480458e5c0cc02a8a809
parent ee1e535298ca78a8e7407e25044d7ddf563273e4

[libpng16] Imported from libpng-1.6.24beta02.tar

pngwutil.c

diff --git a/pngwutil.c b/pngwutil.c
index c1751fe..ddac9bf 100644
--- a/pngwutil.c
+++ b/pngwutil.c
@@ -2448,7 +2448,7 @@
       /* Overflow can occur in the calculation, just select the lowest set
        * filter.
        */
-      filter_to_do &= -filter_to_do;
+      filter_to_do &= 0U-filter_to_do;
    }
    else if ((filter_to_do & PNG_FILTER_NONE) != 0 &&
          filter_to_do != PNG_FILTER_NONE)