re PR preprocessor/3260 (#include __FILE__ broken)

	PR preprocessor/3260
	* cppmacro.c (make_string_token): Null terminate.

From-SVN: r43492

gcc/ChangeLog

+2001-06-21  Neil Booth  <neil@cat.daikokuya.demon.co.uk>
+
+	* cppmacro.c (make_string_token): Null terminate.
+
 2001-06-21  DJ Delorie  <dj@redhat.com>
 
 	* config/alpha/alpha.h (struct machine_function): Remove.

gcc/cppmacro.c

@@ -105,11 +105,12 @@ make_string_token (pool, token, text, len)
      const U_CHAR *text;
      unsigned int len;
 {
-  U_CHAR *buf = _cpp_pool_alloc (pool, len * 4);
+  U_CHAR *buf = _cpp_pool_alloc (pool, len * 4 + 1);
 
   token->type = CPP_STRING;
   token->val.str.text = buf;
   token->val.str.len = quote_string (buf, text, len) - buf;
+  token->val.str.text[token->val.str.len] = '\0';
   token->flags = 0;
 }