X-Git-Url: https://pd.if.org/git/?a=blobdiff_plain;f=functions%2Fstdio%2Fvsnprintf.c;h=e890c71a48173c1e5edc3d9c861b00e8891e6cc6;hb=d6f1494a4f38a212b29a13ee713885058dcf0fe7;hp=9eb869e78cb2b7dbb52c9eab259b0fba1670283c;hpb=a7a8d2f1c85c2d7760d4d3479e90466cc3a81b04;p=pdclib

diff --git a/functions/stdio/vsnprintf.c b/functions/stdio/vsnprintf.c
index 9eb869e..e890c71 100644
--- a/functions/stdio/vsnprintf.c
+++ b/functions/stdio/vsnprintf.c
@@ -1,6 +1,4 @@
-/* $Id$ */
-
-/* vsnprintf( char *, size_t, const char *, va_list ap )
+/* vsnprintf( char *, size_t, const char *, va_list )
 
    This file is part of the Public Domain C Library (PDCLib).
    Permission is granted to use, modify, and / or redistribute at will.
@@ -32,7 +30,12 @@ int vsnprintf( char * _PDCLIB_restrict s, size_t n, const char * _PDCLIB_restric
         if ( ( *format != '%' ) || ( ( rc = _PDCLIB_print( format, &status ) ) == format ) )
         {
             /* No conversion specifier, print verbatim */
-            s[ status.i++ ] = *(format++);
+            if ( status.i < n )
+            {
+                s[ status.i ] = *format;
+            }
+            status.i++;
+            format++;
         }
         else
         {
@@ -40,7 +43,10 @@ int vsnprintf( char * _PDCLIB_restrict s, size_t n, const char * _PDCLIB_restric
             format = rc;
         }
     }
-    s[ status.i ] = '\0';
+    if ( status.i  < n )
+    {
+        s[ status.i ] = '\0';
+    }
     va_end( status.arg );
     return status.i;
 }
@@ -51,7 +57,7 @@ int vsnprintf( char * _PDCLIB_restrict s, size_t n, const char * _PDCLIB_restric
 #define _PDCLIB_FILEID "stdio/vsnprintf.c"
 #define _PDCLIB_STRINGIO
 
-#include <_PDCLIB_test.h>
+#include "_PDCLIB_test.h"
 
 static int testprintf( char * s, const char * format, ... )
 {