preprocessor/8449: Ellipsis in 3...5 not recognized properly

[Neil Booth]

ehrhardt@mathematik.uni-ulm.de wrote:-

> Compiling this:
> 
> int a[2] = {[0 ...1]=1};
> 
> with gcc -c t.c gives an error:
> gcc -c t9.c
> t9.c:1: too many decimal points in floating constant
> The cause is quite obious: The ellipsis is parsed as part of the
> number. Something along these lines might fix it (only compile tested
> as of yet)

As I expected, I couldn't reproduce this.  Could you elaborate?
Are you using stock GCC?  The code in cpplex.c IMO clearly handles
ellipses correctly, even with escaped newlines, and has nothing to
do with numbers:

    case '.':
      result->type = CPP_DOT;
      c = get_effective_char (pfile);
      if (c == '.')
	{
	  const unsigned char *pos = buffer->cur;

	  if (get_effective_char (pfile) == '.')
	    result->type = CPP_ELLIPSIS;
	  else
	    buffer->cur = pos - 1;
	}

So, assuming the case '.' code is reached, which it would appear to
be since the "..." appears after whitespace (which causes a loop back
to re-enter the switch) I don't see how this can fail.

What ASCII character is after the '0' in your line above?  Maybe it's
not be the space it appears to be.

Neil.