https://gcc.gnu.org/g:b39d5fad621c25812fb764e3a8808bab3f2fe774
commit r15-9236-gb39d5fad621c25812fb764e3a8808bab3f2fe774
Author: Sandra Loosemore <sloosem...@baylibre.com>
Date: Sun Apr 6 16:03:48 2025 +0000
Doc: Further clarify support for _Bool type
gcc/ChangeLog
* doc/extend.texi (Boolean Type): Further clarify support for
_Bool in C23 and C++.
Diff:
---
gcc/doc/extend.texi | 8 +++++++-
1 file changed, 7 insertions(+), 1 deletion(-)
diff --git a/gcc/doc/extend.texi b/gcc/doc/extend.texi
index 16ad83fc510c..ae3357f83bff 100644
--- a/gcc/doc/extend.texi
+++ b/gcc/doc/extend.texi
@@ -13814,7 +13814,13 @@ The C99 standard added @code{_Bool} as a C language
keyword naming the
boolean type. As an extension, GNU C also recognizes @code{_Bool} in
C90 mode as well as with @option{-std=c99} and later.
-GNU C++ does not support the @code{_Bool} keyword.
+C23 added @code{bool} as the preferred name of the boolean type, but
+@code{_Bool} also remains a standard keyword in the language and is
+supported as such by GCC with @option{-std=c23}.
+
+GNU C++ does not support @code{_Bool} as a keyword, but including
+@code{<stdbool.h>} defines it as a macro in terms of standard C++'s
+@code{bool} type.
@node Variadic Macros
@subsection Macros with a Variable Number of Arguments.
