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authorPeter Breitenlohner <peb@mppmu.mpg.de>2014-08-19 10:06:19 +0000
committerPeter Breitenlohner <peb@mppmu.mpg.de>2014-08-19 10:06:19 +0000
commit092fdbe5bdea0ae250210a394363a4f618b27eea (patch)
tree625e62a2a938d75aa17f7f6204bb588c36371802 /Build/source/texk/web2c/pdftexdir/writepng.c
parent495f660b981136a457e736a2e6cff8eda4a55e16 (diff)
LuaTeX, pdfTeX, XeTeX: Avoid PNG warnings
git-svn-id: svn://tug.org/texlive/trunk@34978 c570f23f-e606-0410-a88d-b1316a301751
Diffstat (limited to 'Build/source/texk/web2c/pdftexdir/writepng.c')
-rw-r--r--Build/source/texk/web2c/pdftexdir/writepng.c7
1 files changed, 6 insertions, 1 deletions
diff --git a/Build/source/texk/web2c/pdftexdir/writepng.c b/Build/source/texk/web2c/pdftexdir/writepng.c
index 6371e934089..5713880f6e1 100644
--- a/Build/source/texk/web2c/pdftexdir/writepng.c
+++ b/Build/source/texk/web2c/pdftexdir/writepng.c
@@ -22,12 +22,17 @@ with this program. If not, see <http://www.gnu.org/licenses/>.
static int transparent_page_group = 0;
+static void warn(png_structp png_ptr, png_const_charp msg)
+{
+ (void)png_ptr; (void)msg; /* Make compiler happy */
+}
+
void read_png_info(integer img)
{
FILE *png_file = xfopen(img_name(img), FOPEN_RBIN_MODE);
if ((png_ptr(img) = png_create_read_struct(PNG_LIBPNG_VER_STRING,
- NULL, NULL, NULL)) == NULL)
+ NULL, NULL, warn)) == NULL)
pdftex_fail("libpng: png_create_read_struct() failed");
if ((png_info(img) = png_create_info_struct(png_ptr(img))) == NULL)
pdftex_fail("libpng: png_create_info_struct() failed");