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-rw-r--r--modules/zlib/src/gzguts.h23
1 files changed, 16 insertions, 7 deletions
diff --git a/modules/zlib/src/gzguts.h b/modules/zlib/src/gzguts.h
index d87659d03..990a4d251 100644
--- a/modules/zlib/src/gzguts.h
+++ b/modules/zlib/src/gzguts.h
@@ -1,5 +1,5 @@
/* gzguts.h -- zlib internal header definitions for gz* operations
- * Copyright (C) 2004, 2005, 2010, 2011, 2012, 2013 Mark Adler
+ * Copyright (C) 2004, 2005, 2010, 2011, 2012, 2013, 2016 Mark Adler
* For conditions of distribution and use, see copyright notice in zlib.h
*/
@@ -25,6 +25,10 @@
# include <stdlib.h>
# include <limits.h>
#endif
+
+#ifndef _POSIX_SOURCE
+# define _POSIX_SOURCE
+#endif
#include <fcntl.h>
#ifdef _WIN32
@@ -35,6 +39,10 @@
# include <io.h>
#endif
+#if defined(_WIN32) || defined(__CYGWIN__)
+# define WIDECHAR
+#endif
+
#ifdef WINAPI_FAMILY
# define open _open
# define read _read
@@ -95,18 +103,19 @@
# endif
#endif
-/* unlike snprintf (which is required in C99, yet still not supported by
- Microsoft more than a decade later!), _snprintf does not guarantee null
- termination of the result -- however this is only used in gzlib.c where
+/* unlike snprintf (which is required in C99), _snprintf does not guarantee
+ null termination of the result -- however this is only used in gzlib.c where
the result is assured to fit in the space provided */
-#ifdef _MSC_VER
+#if defined(_MSC_VER) && _MSC_VER < 1900
# define snprintf _snprintf
#endif
#ifndef local
# define local static
#endif
-/* compile with -Dlocal if your debugger can't find static symbols */
+/* since "static" is used to mean two completely different things in C, we
+ define "local" for the non-static meaning of "static", for readability
+ (compile with -Dlocal if your debugger can't find static symbols) */
/* gz* functions always use library allocation functions */
#ifndef STDC
@@ -170,7 +179,7 @@ typedef struct {
char *path; /* path or fd for error messages */
unsigned size; /* buffer size, zero if not allocated yet */
unsigned want; /* requested buffer size, default is GZBUFSIZE */
- unsigned char *in; /* input buffer */
+ unsigned char *in; /* input buffer (double-sized when writing) */
unsigned char *out; /* output buffer (double-sized when reading) */
int direct; /* 0 if processing gzip, 1 if transparent */
/* just for reading */