zlib/zlib-format.patch

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From: meissner@suse.de
Subject: supply format arguments to gzprintf().
Index: zlib-1.2.7/zlib.h
===================================================================
--- zlib-1.2.7.orig/zlib.h 2012-05-03 06:12:35.000000000 +0200
+++ zlib-1.2.7/zlib.h 2012-09-27 13:12:58.187146312 +0200
@@ -1329,7 +1329,11 @@
error.
*/
-ZEXTERN int ZEXPORTVA gzprintf Z_ARG((gzFile file, const char *format, ...));
+ZEXTERN int ZEXPORTVA gzprintf Z_ARG((gzFile file, const char *format, ...))
+#ifdef __GNUC__
+ __attribute__((__format__(__printf__,2,3)))
+#endif
+;
/*
Converts, formats, and writes the arguments to the compressed file under
control of the format string, as in fprintf. gzprintf returns the number of