My patch that added initial C2X support and associated command-line
options missed documenting -Wc11-c2x-compat although the other options
were properly documented. This patch adds the missing documentation.
Tested with "make info" and "make pdf". Applied to mainline. Will apply
to GCC 9 branch after reducing the list of features covered to reflect the
more limited C2X support in GCC 9.
2019-11-20 Joseph Myers <jos...@codesourcery.com>
* doc/invoke.texi (-Wc11-c2x-compat): Document.
Index: gcc/doc/invoke.texi
===================================================================
--- gcc/doc/invoke.texi (revision 278507)
+++ gcc/doc/invoke.texi (working copy)
@@ -295,6 +295,7 @@
-Wbool-compare -Wbool-operation @gol
-Wno-builtin-declaration-mismatch @gol
-Wno-builtin-macro-redefined -Wc90-c99-compat -Wc99-c11-compat @gol
+-Wc11-c2x-compat @gol
-Wc++-compat -Wc++11-compat -Wc++14-compat -Wc++17-compat @gol
-Wc++20-compat @gol
-Wcast-align -Wcast-align=strict -Wcast-function-type -Wcast-qual @gol
@@ -6830,6 +6831,16 @@
and so on. This option is independent of the standards mode. Warnings are
disabled in the expression that follows @code{__extension__}.
+@item -Wc11-c2x-compat @r{(C and Objective-C only)}
+@opindex Wc11-c2x-compat
+@opindex Wno-c11-c2x-compat
+Warn about features not present in ISO C11, but present in ISO C2X.
+For instance, warn about omitting the string in @code{_Static_assert},
+use of @samp{[[]]} syntax for attributes, use of decimal
+floating-point types, and so on. This option is independent of the
+standards mode. Warnings are disabled in the expression that follows
+@code{__extension__}.
+
@item -Wc++-compat @r{(C and Objective-C only)}
@opindex Wc++-compat
@opindex Wno-c++-compat
--
Joseph S. Myers
jos...@codesourcery.com
