Fix _mxml_vsnprintf on Windows (Issue #245)

CHANGES.md

@@ -12,6 +12,7 @@
   `mxmlSetText`, and `mxmlSetTextf` functions caused a use-after-free bug if
   the value came from the same node (Issue #241)
 - The `mxmlSetOpaquef` and `mxmlSetTextf` functions did not work (Issue #244)
+- The `_mxml_strdupf` function did not work on Windows (Issue #245)
 
 
 # Changes in Mini-XML 2.12

mxml-file.c

@@ -13,9 +13,9 @@
  * Include necessary headers...
  */
 
-#ifndef WIN32
+#ifndef _WIN32
 #  include <unistd.h>
-#endif /* !WIN32 */
+#endif /* !_WIN32 */
 #include "mxml-private.h"
 
 

mxml-private.c

@@ -216,7 +216,7 @@ _mxml_init(void)
 }
 
 
-#elif defined(WIN32) && defined(MXML1_EXPORTS) /**** WIN32 threading ****/
+#elif defined(_WIN32) && defined(MXML1_EXPORTS) /**** WIN32 threading ****/
 #  include <windows.h>
 
 static DWORD _mxml_tls_index;		/* Index for global storage */

mxml-string.c

@@ -526,17 +526,14 @@ _mxml_vstrdupf(const char *format,	/* I - Printf-style format string */
   * needed...
   */
 
-#  ifdef WIN32
+#  ifdef _WIN32
   bytes = _vscprintf(format, ap);
 
 #  else
   va_list	apcopy;			/* Copy of argument list */
 
   va_copy(apcopy, ap);
-  bytes = vsnprintf(temp, sizeof(temp), format, apcopy);
-#  endif /* WIN32 */
-
-  if (bytes < sizeof(temp))
+  if ((bytes = vsnprintf(temp, sizeof(temp), format, apcopy)) < sizeof(temp))
   {
    /*
     * Hey, the formatted string fits in the tiny buffer, so just dup that...
@@ -544,10 +541,10 @@ _mxml_vstrdupf(const char *format,	/* I - Printf-style format string */
 
     return (strdup(temp));
   }
+#  endif /* _WIN32 */
 
  /*
-  * Allocate memory for the whole thing and reformat to the new, larger
-  * buffer...
+  * Allocate memory for the whole thing and reformat to the new buffer...
   */
 
   if ((buffer = calloc(1, bytes + 1)) != NULL)

testmxml.c

@@ -20,9 +20,9 @@
 
 #include "config.h"
 #include "mxml-private.h"
-#ifndef WIN32
+#ifndef _WIN32
 #  include <unistd.h>
-#endif /* !WIN32 */
+#endif /* !_WIN32 */
 #include <fcntl.h>
 #ifndef O_BINARY
 #  define O_BINARY 0
@@ -721,7 +721,7 @@ main(int  argc,				/* I - Number of command-line args */
     }
   }
 
-#ifndef WIN32
+#ifndef _WIN32
  /*
   * Debug hooks...
   */
@@ -738,7 +738,7 @@ main(int  argc,				/* I - Number of command-line args */
       puts("Unable to check for leaks.");
   }
 #  endif /* __APPLE__ */
-#endif /* !WIN32 */
+#endif /* !_WIN32 */
 
  /*
   * Return...