From: John Wiegley <johnw@newartisans.com>
Date: Mon, 23 Nov 2015 14:42:22 +0000 (-0800)
Subject: Add a note about a questionable use of bool in xdisp.c
X-Git-Tag: emacs-25.0.90~686
X-Git-Url: http://git.eshelyaron.com/gitweb/?a=commitdiff_plain;h=12ad79c23e26e02007776105f99b03b0169c2a62;p=emacs.git

Add a note about a questionable use of bool in xdisp.c
---

diff --git a/src/xdisp.c b/src/xdisp.c
index 85d356e9ba5..50c5518114e 100644
--- a/src/xdisp.c
+++ b/src/xdisp.c
@@ -10733,6 +10733,9 @@ display_echo_area (struct window *w)
      reset the echo_area_buffer in question to nil at the end because
      with_echo_area_buffer will sets it to an empty buffer.  */
   bool i = display_last_displayed_message_p;
+  /* According to the C99, C11 and C++11 standards, the integral value
+     of a "bool" is always 0 or 1, so this array access is safe here,
+     if oddly typed. */
   no_message_p = NILP (echo_area_buffer[i]);
 
   window_height_changed_p