Suppress pedantic warnings from libpng 1.2.41 and 1.4.0

diff --git a/coders/png.c b/coders/png.c
index 17c98ace0db22696ae83b52184e54c155f72618e..4b6d7da82c3376464127b42869ac048bbb455e54 100644 (file)
--- a/coders/png.c
+++ b/coders/png.c
@@ -79,6 +79,14 @@
 #include "magick/transform.h"
 #include "magick/utility.h"
 #if defined(MAGICKCORE_PNG_DELEGATE)
+
+/* Suppress libpng pedantic warnings */
+#define PNG_DEPRECATED  /* use of this function is deprecated */
+#define PNG_USE_RESULT  /* the result of this function must be checked */
+#define PNG_NORETURN    /* this function does not return */
+#define PNG_ALLOCATED   /* the result of the function is new memory */
+#define PNG_DEPSTRUCT   /* access to this struct member is deprecated */
+
 #include "png.h"
 #include "zlib.h"
 \f