wchar character constant sizes

[Andrew Macleod]

While attempting to get sparc64 configured, Ive run across a slight
hiccup while compiling libstdc++. The test case reduces down to :

char m () {
  char x;

  x = L'.';
  return x;
}

When compiled, this produces:

 char m()
test.C:4: character constant too long
 char m()


The problem appears to be that c-lex.c::lex_charconst isn't calculating max_chars based on
the wchar_type, but rather from the integer type as for C.

And by they way, is there a good reason that c-lex.c throws away the definition 
of WCHAR_TYPE_SIZE instead of using what a port sets it as?

    #undef WCHAR_TYPE_SIZE
    #define WCHAR_TYPE_SIZE TYPE_PRECISION (wchar_type_node)


Anyway, This fixes my problem for sparc64-solaris. Bootstraps and everything on sparc and x86.
seem reasonable?


Andrew


	* c-lex.c (lex_charconst): When compiling for c++, set max_chars based
	on WCHAR_TYPE.


Index: c-lex.c
===================================================================
RCS file: /cvs/gcc/egcs/gcc/c-lex.c,v
retrieving revision 1.133
diff -c -p -r1.133 c-lex.c
*** c-lex.c	2001/03/07 01:31:59	1.133
--- c-lex.c	2001/04/24 14:34:38
*************** lex_charconst (str, len, wide)
*** 1629,1635 ****
  
    max_chars = TYPE_PRECISION (integer_type_node) / width;
    if (wide)
!     width = WCHAR_TYPE_SIZE;
  
    while (str < limit)
      {
--- 1629,1638 ----
  
    max_chars = TYPE_PRECISION (integer_type_node) / width;
    if (wide)
!     {
!       width = WCHAR_TYPE_SIZE;
!       max_chars = WCHAR_BYTES;
!     }
  
    while (str < limit)
      {