Patch: check formats in C++ as C94

[Joseph S. Myers]

This patch fixes the pedantic format checking for C++ to check
according to C94 - i.e., to accept %lc, %ls, %l[.

Bootstrapped with no regressions on i686-pc-linux-gnu.  I believe this
is the correct standard version, and if so this is a regression since
2.95 accepted %ls in C++ (and C) with -pedantic, but could someone
from the C++ side review this?

2001-06-03  Joseph S. Myers  <jsm28@cam.ac.uk>

	* c-format.c (CPLUSPLUS_STD_VER): Define to STD_C94.

2001-06-03  Joseph S. Myers  <jsm28@cam.ac.uk>

	* g++.old-deja/g++.warn/format1.C: New test.

--- c-format.c.orig	Sat Mar  3 12:29:29 2001
+++ c-format.c	Sun Jun  3 12:28:32 2001
@@ -474,7 +474,7 @@
 
 /* The C standard version C++ is treated as equivalent to
    or inheriting from, for the purpose of format features supported.  */
-#define CPLUSPLUS_STD_VER	STD_C89
+#define CPLUSPLUS_STD_VER	STD_C94
 /* The C standard version we are checking formats against when pedantic.  */
 #define C_STD_VER		((int)(c_language == clk_cplusplus	  \
 				 ? CPLUSPLUS_STD_VER			  \
--- testsuite/g++.old-deja/g++.warn/format1.C.orig	Mon Mar 26 23:57:02 2001
+++ testsuite/g++.old-deja/g++.warn/format1.C	Sun Jun  3 11:35:31 2001
@@ -0,0 +1,15 @@
+// Test that formats get checked according to C94.
+// Origin: Joseph Myers <jsm28@cam.ac.uk>.
+// Build don't link:
+// Special g++ Options: -ansi -pedantic -Wformat
+
+#include <cstdio>
+
+void
+foo (int i, int *ip, __WINT_TYPE__ lc, wchar_t *ls)
+{
+  std::printf ("%d%ls%lc\n", i, ls, lc);
+  std::printf ("%d", ls); // WARNING - format
+  std::scanf ("%d%lc%ls%l[abc]", ip, ls, ls, ls);
+  std::scanf ("%hd", ip); // WARNING - format
+}

-- 
Joseph S. Myers
jsm28@cam.ac.uk