From: Richard Kenner <kenner@gcc.gnu.org>
Date: Sun, 13 Apr 1997 16:47:14 +0000 (-0400)
Subject: Formerly cpp.texi.~30~
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=977cc2e1187de3448a4a5f9903879def4a6296a3;p=gcc.git

Formerly cpp.texi.~30~

From-SVN: r13873
---

diff --git a/gcc/cpp.texi b/gcc/cpp.texi
index c3164b97b02..b8961db8cde 100644
--- a/gcc/cpp.texi
+++ b/gcc/cpp.texi
@@ -2630,13 +2630,17 @@ comment, or whenever a Backslash-Newline appears in a @samp{//} comment.
 @item -Wall
 @findex -Wall
 Requests both @samp{-Wtrigraphs} and @samp{-Wcomment} (but not
-@samp{-Wtraditional}). 
+@samp{-Wtraditional} or @samp{-Wundef}). 
 
 @item -Wtraditional
 @findex -Wtraditional
 Warn about certain constructs that behave differently in traditional and
 ANSI C@.
 
+@item -Wundef
+@findex -Wundef
+Warn if an undefined identifier is evaluated in an @samp{#if} directive.
+
 @item -I @var{directory}
 @findex -I
 Add the directory @var{directory} to the head of the list of