Index: head/graphics/optipng/Makefile
===================================================================
--- head/graphics/optipng/Makefile	(revision 461571)
+++ head/graphics/optipng/Makefile	(revision 461572)
@@ -1,41 +1,41 @@
 # Created by: Thomas Hurst <tom@hur.st>
 # $FreeBSD$
 
 PORTNAME=	optipng
-PORTVERSION=	0.7.6
+PORTVERSION=	0.7.7
 CATEGORIES=	graphics
 MASTER_SITES=	SF/${PORTNAME}/OptiPNG/${PORTNAME}-${PORTVERSION}
 
 MAINTAINER=	tom@hur.st
 COMMENT=	Optimizer for PNG files
 
 LICENSE=	ZLIB
 LICENSE_FILE=	${WRKSRC}/LICENSE.txt
 
 OPTIONS_DEFINE=	BUNDLED_LIBPNG BUNDLED_ZLIB
 
 BUNDLED_LIBPNG_DESC=		Use bundled libpng
 BUNDLED_LIBPNG_CONFIGURE_OFF=	--with-system-libpng
 BUNDLED_LIBPNG_CONFIGURE_ON=	--without-system-libpng
 BUNDLED_LIBPNG_LIB_DEPENDS_OFF=	libpng.so:graphics/png
 BUNDLED_LIBPNG_USES_OFF=	localbase:ldflags
 
 BUNDLED_ZLIB_DESC=		Use bundled zlib
 BUNDLED_ZLIB_CONFIGURE_OFF=	--with-system-zlib
 BUNDLED_ZLIB_CONFIGURE_ON=	--without-system-zlib
 
 USES=	gmake
 HAS_CONFIGURE=	yes
 
 PLIST_FILES=	bin/optipng man/man1/optipng.1.gz
 PORTDOCS=	history.txt optipng.man.html optipng.man.pdf optipng.man.txt \
 		png_optimization.html todo.txt
 
 do-install:
 	${INSTALL_PROGRAM} ${WRKSRC}/src/optipng/optipng ${STAGEDIR}${PREFIX}/bin/
 	${INSTALL_MAN} ${WRKSRC}/src/optipng/man/optipng.1 ${STAGEDIR}${MAN1PREFIX}/man/man1/
 
 	${INSTALL} -d ${STAGEDIR}${DOCSDIR}
 	${INSTALL_DATA} ${PORTDOCS:S,^,${WRKSRC}/doc/,} ${STAGEDIR}${DOCSDIR}/
 
 .include <bsd.port.mk>
Index: head/graphics/optipng/distinfo
===================================================================
--- head/graphics/optipng/distinfo	(revision 461571)
+++ head/graphics/optipng/distinfo	(revision 461572)
@@ -1,3 +1,3 @@
-TIMESTAMP = 1486685228
-SHA256 (optipng-0.7.6.tar.gz) = 4870631fcbd3825605f00a168b8debf44ea1cda8ef98a73e5411eee97199be80
-SIZE (optipng-0.7.6.tar.gz) = 2202237
+TIMESTAMP = 1515280833
+SHA256 (optipng-0.7.7.tar.gz) = 4f32f233cef870b3f95d3ad6428bfe4224ef34908f1b42b0badf858216654452
+SIZE (optipng-0.7.7.tar.gz) = 2329555
Index: head/graphics/optipng/files/patch-src_pngxtern_pngxmem.c
===================================================================
--- head/graphics/optipng/files/patch-src_pngxtern_pngxmem.c	(revision 461571)
+++ head/graphics/optipng/files/patch-src_pngxtern_pngxmem.c	(revision 461572)
@@ -1,11 +1,11 @@
---- src/pngxtern/pngxmem.c.orig	2015-04-22 09:07:30 UTC
+--- src/pngxtern/pngxmem.c.orig	2018-01-06 23:22:33 UTC
 +++ src/pngxtern/pngxmem.c
-@@ -34,7 +34,7 @@ pngx_malloc_rows_extended(png_structp pn
-       png_error(png_ptr, "Missing IHDR");
+@@ -35,7 +35,7 @@ pngx_malloc_rows_extended(png_structp pn
     row_size = png_get_rowbytes(png_ptr, info_ptr);
     /* libpng sets row_size to 0 when the width is too large to process. */
--   if (row_size == 0 || height > (pngx_alloc_size_t)(-1) / sizeof(png_bytep))
-+   if (row_size == 0 || height > (pngx_alloc_size_t)(-1U) / sizeof(png_bytep))
+    if (row_size == 0 ||
+-       (pngx_alloc_size_t)height > (pngx_alloc_size_t)(-1) / sizeof(png_bytep))
++       (pngx_alloc_size_t)height > (pngx_alloc_size_t)(-1U) / sizeof(png_bytep))
        png_error(png_ptr, "Can't handle exceedingly large image dimensions");
     if (row_size < min_row_size)
        row_size = min_row_size;