https://gcc.gnu.org/g:e2e4b603ced350447a8d0e2c5f4d419b8f69b6a6
commit r14-9363-ge2e4b603ced350447a8d0e2c5f4d419b8f69b6a6
Author: Jonathan Wakely <jwak...@redhat.com>
Date: Tue Mar 5 16:09:06 2024 +0000
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:
---
gcc/doc/cppopts.texi | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)
diff --git a/gcc/doc/cppopts.texi b/gcc/doc/cppopts.texi
index fa8f3d88c89..5b5b0848ae8 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.
