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Formerly cpp.texi.~30~
authorkenner <kenner@138bc75d-0d04-0410-961f-82ee72b054a4>
Sun, 13 Apr 1997 16:47:14 +0000 (16:47 +0000)
committerkenner <kenner@138bc75d-0d04-0410-961f-82ee72b054a4>
Sun, 13 Apr 1997 16:47:14 +0000 (16:47 +0000)
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@13873 138bc75d-0d04-0410-961f-82ee72b054a4

gcc/cpp.texi

index c3164b9..b8961db 100644 (file)
@@ -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