Advance over * argument for precision.

dlls/msvcrt/tests/printf.c

@@ -76,6 +76,16 @@ static void test_sprintf( void )
     ok(!strcmp(buffer,"0foo"),"String not zero-prefixed \"%s\"\n",buffer);
     ok( r==4, "return count wrong\n");
 
+    format = "%.1s";
+    r = sprintf(buffer,format,"foo");
+    ok(!strcmp(buffer,"f"),"Precision ignored \"%s\"\n",buffer);
+    ok( r==1, "return count wrong\n");
+
+    format = "%.*s";
+    r = sprintf(buffer,format,1,"foo");
+    ok(!strcmp(buffer,"f"),"Precision ignored \"%s\"\n",buffer);
+    ok( r==1, "return count wrong\n");
+
     format = "%#-012p";
     r = sprintf(buffer,format,(void *)57);
     ok(!strcmp(buffer,"0X00000039  "),"Pointer formatted incorrectly\n");

dlls/msvcrt/wcs.c

@@ -309,6 +309,9 @@ static inline int pf_output_format_W( pf_output *out, LPCWSTR str,
     if( len < 0 )
         len = strlenW( str );
 
+    if (flags->Precision && flags->Precision < len)
+      len = flags->Precision;
+
     r = pf_fill( out, len, flags, 1 );
 
     if( r>=0 )
@@ -328,6 +331,9 @@ static inline int pf_output_format_A( pf_output *out, LPCSTR str,
     if( len < 0 )
         len = strlen( str );
 
+    if (flags->Precision && flags->Precision < len)
+      len = flags->Precision;
+
     r = pf_fill( out, len, flags, 1 );
 
     if( r>=0 )
@@ -461,7 +467,10 @@ static int pf_vsnprintf( pf_output *out, const WCHAR *format, va_list valist )
         {
             p++;
             if( *p == '*' )
+            {
                 flags.Precision = va_arg( valist, int );
+                p++;
+            }
             else while( isdigit(*p) )
             {
                 flags.Precision *= 10;