Patch to silence a GCC warning

Thread View: gnu.epoch.misc

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1 total messages Started by meissner Wed, 04 Nov 1992 09:04

#23

Author: meissner
Date: Wed, 04 Nov 1992 09:04

27 lines
1417 bytes

Wed Nov  4 13:55:47 1992  Michael Meissner  (meissner@osf.org)

	* buffer.h (is_control_char, is_meta_char): Use unsigned test for
	doing ranges, which is faster, and causes GCC not to warn about
	'test is always true due to limited range' when given an unsigned
	argument in indent.c and xdispepoch.c.

*** buffer.h.orig	Wed Nov  4 13:43:00 1992
--- buffer.h	Wed Nov  4 13:46:34 1992
***************
*** 284,290 ****
  
  #define BufferSafeFloor(n) (BEGV <= GPT && GPT <= (n) ? GPT : BEGV)
  
! #define is_control_char(c)   (((c) >= 0 && (c) < 040) || (c) == 0177)
! #define is_meta_char(c) ((c) > 0240 && (c) <= 0377)
  
  extern void reset_buffer ();
--- 284,291 ----
  
  #define BufferSafeFloor(n) (BEGV <= GPT && GPT <= (n) ? GPT : BEGV)
  
! #define is_in_range(c,l,h) ((unsigned)((c) - (l)) > (unsigned)((c) - (h)))
! #define is_control_char(c)   (is_in_range (c, 0, 037) || (c) == 0177)
! #define is_meta_char(c) is_in_range (c, 0241, 0377)
  
  extern void reset_buffer ();

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