🚀 go-pugleaf

Given the program

	char x = '\x000000000';

GCC 2.2.2 (SunOS 4.1.2, Sparc) wrongly complains:

	t.c:1: warning: hex escape out of range

Here is a patch.

Thu Aug 27 01:15:00 1992  Paul Eggert  (eggert@twinsun.com)

	* c-lex.c (readescape): Leading zeros do not contribute to a hex
	escape's size when checking for overflow.

===================================================================
RCS file: c-lex.c,v
retrieving revision 2.2.2.2
diff -c -r2.2.2.2 c-lex.c
*** c-lex.c	1992/07/24 18:54:59	2.2.2.2
--- c-lex.c	1992/08/27 01:15:00
***************
*** 741,747 ****
  {
    register int c = getc (finput);
    register int code;
!   register unsigned count;
    unsigned firstdig;
  
    switch (c)
--- 741,747 ----
  {
    register int c = getc (finput);
    register int code;
!   register int count;
    unsigned firstdig;
  
    switch (c)
***************
*** 754,760 ****
  	return c;
  
        code = 0;
!       count = 0;
        while (1)
  	{
  	  c = getc (finput);
--- 754,760 ----
  	return c;
  
        code = 0;
!       count = -1;
        while (1)
  	{
  	  c = getc (finput);
***************
*** 773,782 ****
  	  if (c >= '0' && c <= '9')
  	    code += c - '0';
  	  if (count == 0)
! 	    firstdig = code;
  	  count++;
  	}
!       if (count == 0)
  	error ("\\x used with no following hex digits");
        else if ((count - 1) * 4 >= TYPE_PRECISION (integer_type_node)
  	       || (count > 1
--- 773,785 ----
  	  if (c >= '0' && c <= '9')
  	    code += c - '0';
  	  if (count == 0)
! 	    {
! 	      firstdig = code;
! 	      count = code ? 0 : -1;
! 	    }
  	  count++;
  	}
!       if (count < 0)
  	error ("\\x used with no following hex digits");
        else if ((count - 1) * 4 >= TYPE_PRECISION (integer_type_node)
  	       || (count > 1