A libio patch for glibc 2.0.7

[H.J. Lu]

Hi, Ulrich,

This modified version may generate better code.


-- 
H.J. Lu (hjl@gnu.org)
---
Index: libio/vsnprintf.c
===================================================================
RCS file: /home/work/cvs/gnu/glibc-2.0/libio/vsnprintf.c,v
retrieving revision 1.1.1.1
diff -u -p -r1.1.1.1 vsnprintf.c
--- vsnprintf.c	1997/09/19 18:10:38	1.1.1.1
+++ vsnprintf.c	1998/08/23 17:08:58
@@ -45,7 +45,12 @@ _IO_vsnprintf (string, maxlen, format, a
 
   _IO_init ((_IO_FILE *) &sf, 0);
   _IO_JUMPS ((_IO_FILE *) &sf) = &_IO_str_jumps;
-  _IO_str_init_static ((_IO_FILE *) &sf, string, maxlen - 1, string);
+  maxlen--;
+  if (maxlen == 0)
+    /* This is a very special case since _IO_str_init_static () will
+       use strlen (string) for the size of string if maxlen == 0. */
+    string [0] = '\0';
+  _IO_str_init_static ((_IO_FILE *) &sf, string, maxlen, string);
   ret = _IO_vfprintf ((_IO_FILE *) &sf, format, args);
   *((_IO_FILE *) &sf)->_IO_write_ptr = '\0';
   return ret;