Quicky GAS question

[Dave Korn]

  Is it legitimate to alter the chars in the input buffer?  I couldn't help
but notice that input_line_pointer isn't declared const :)  I want to output
a string by doing something like....

  char *message_start;

  SKIP_WHITESPACE ();
  message_start = input_line_pointer;
  while ((input_line_pointer < buffer_limit)
      && !is_end_of_line[(unsigned char) *input_line_pointer])
    input_line_pointer++;
  if (input_line_pointer != message_start)
  {
    *input_line_pointer++ = 0;
    as_bad (_("%s"), message_start);
  }

... where I'm writing a zero to the buffer to terminate the string.  I
notice that s_errwarn uses demand_copy_C_string, so I suppose there may be
some problem here, but I'm not sure what it is.

  Alternatively, does as_bad fully understand printf-style field size
specifiers?  That would let me write the message without needing to
nul-terminate it by saying

    size_t length = input_line_pointer - message_start;
    as_bad (_("%*.*s"), length, length, message_start);

    cheers, 
      DaveK
-- 
Can't think of a witty .sigline today....