From: Jonathan Wakely <jwakely@redhat.com>
Date: Tue, 5 Mar 2024 16:09:06 +0000 (+0000)
Subject: doc: Fix docs for -dD regarding predefined macros
X-Git-Tag: basepoints/gcc-15~776
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=e2e4b603ced350447a8d0e2c5f4d419b8f69b6a6;p=thirdparty%2Fgcc.git

doc: Fix docs for -dD regarding predefined macros

The manual has always claimed that -dD differs from -dM by not
outputting predefined macros, but that's untrue. It has been untrue
since GCC 3.0 (probably with the change to use libcpp as the default
preprocessor implementation).

gcc/ChangeLog:

	* doc/cppopts.texi: Remove incorrect claim about -dD not
	outputting predefined macros.
---

diff --git a/gcc/doc/cppopts.texi b/gcc/doc/cppopts.texi
index fa8f3d88c890..5b5b0848ae86 100644
--- a/gcc/doc/cppopts.texi
+++ b/gcc/doc/cppopts.texi
@@ -524,8 +524,7 @@ interpreted as a synonym for @option{-fdump-rtl-mach}.
 
 @opindex dD
 @item -dD
-Like @option{-dM} except in two respects: it does @emph{not} include the
-predefined macros, and it outputs @emph{both} the @samp{#define}
+Like @option{-dM} except that it outputs @emph{both} the @samp{#define}
 directives and the result of preprocessing.  Both kinds of output go to
 the standard output file.