X-Git-Url: https://pd.if.org/git/?a=blobdiff_plain;f=functions%2Fstdio%2Fvsnprintf.c;h=cda7ab6579d4f45ef9d47580fb5ef540e070d094;hb=0711226145f12c37217681b57944860bdeb6ace0;hp=9e54dca1bb392076e07c0566fa6449403b24b90b;hpb=0f88da0454edf3c1ca1a7f786c2fd9afdef0eb9c;p=pdclib

diff --git a/functions/stdio/vsnprintf.c b/functions/stdio/vsnprintf.c
index 9e54dca..cda7ab6 100644
--- a/functions/stdio/vsnprintf.c
+++ b/functions/stdio/vsnprintf.c
@@ -10,8 +10,12 @@
 #include <stdarg.h>
 
 #ifndef REGTEST
+#include <_PDCLIB_io.h>
 
-int vsnprintf( char * _PDCLIB_restrict s, size_t n, const char * _PDCLIB_restrict format, _PDCLIB_va_list arg )
+int vsnprintf( char * _PDCLIB_restrict s, 
+               size_t n, 
+               const char * _PDCLIB_restrict format, 
+               _PDCLIB_va_list arg )
 {
     /* TODO: This function should interpret format as multibyte characters.  */
     struct _PDCLIB_status_t status;
@@ -32,7 +36,12 @@ 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 +49,10 @@ 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;
 }
@@ -49,11 +61,10 @@ int vsnprintf( char * _PDCLIB_restrict s, size_t n, const char * _PDCLIB_restric
 
 #ifdef TEST
 #define _PDCLIB_FILEID "stdio/vsnprintf.c"
-#include <_PDCLIB_test.h>
-
-#include <limits.h>
+#define _PDCLIB_STRINGIO
 #include <stdint.h>
-#include <string.h>
+#include <stddef.h>
+#include <_PDCLIB_test.h>
 
 static int testprintf( char * s, const char * format, ... )
 {
@@ -68,7 +79,7 @@ static int testprintf( char * s, const char * format, ... )
 int main( void )
 {
     char target[100];
-#include "printf_testcases.incl"
+#include "printf_testcases.h"
     return TEST_RESULTS;
 }