From: Thien-Thi Nguyen <ttn@gnu.org>
Date: Fri, 17 Mar 2017 09:16:44 +0000 (+0100)
Subject: Fix bug: Range-check integer ‘alpha’ frame parm value
X-Git-Tag: emacs-26.0.90~558
X-Git-Url: http://git.eshelyaron.com/gitweb/?a=commitdiff_plain;h=3c46ac7d65bfa54db540d228552245b4b6d01e94;p=emacs.git

Fix bug: Range-check integer ‘alpha’ frame parm value

Typo introduced 2013-04-01, "Prefer < to >
in range checks such as 0 <= i && i < N".

* src/frame.c (x_set_alpha): Use ‘ialpha’, not ‘alpha’.
---

diff --git a/src/frame.c b/src/frame.c
index 5e1e2f19906..162b2038fd8 100644
--- a/src/frame.c
+++ b/src/frame.c
@@ -3990,7 +3990,7 @@ x_set_alpha (struct frame *f, Lisp_Object arg, Lisp_Object oldval)
       else if (INTEGERP (item))
 	{
 	  EMACS_INT ialpha = XINT (item);
-	  if (! (0 <= ialpha && alpha <= 100))
+	  if (! (0 <= ialpha && ialpha <= 100))
 	    args_out_of_range (make_number (0), make_number (100));
 	  alpha = ialpha / 100.0;
 	}