* doc/invoke.texi (Warning Options): Document that -Wempty-body

	also checks for and while statements in C++.

cp:
	* parser.c (check_empty_body): Add.
	(cp_parser_iteration_statement): Add call to check_empty_body.

testsuite:
	* g++.old-deja/g++.mike/empty.C: Add.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@124534 138bc75d-0d04-0410-961f-82ee72b054a4

1 files changed, 9 insertions, 2 deletions

diff --git a/gcc/doc/invoke.texi b/gcc/doc/invoke.texi
index e608dbc017e..552e3b731b0 100644
--- a/gcc/doc/invoke.texi
+++ b/gcc/doc/invoke.texi
@@ -3157,6 +3157,11 @@ An empty body occurs in an @samp{if}, @samp{else} or
 @samp{do while} statement. This warning can be independently
 controlled by @option{-Wempty-body}.
 
+@item @r{(C++ only)}
+An empty body occurs in a @samp{while} or @samp{for} statement with no
+whitespacing before the semicolon. This warning can be independently
+controlled by @option{-Wempty-body}.
+
 @item
 A pointer is compared against integer zero with @samp{<}, @samp{<=},
 @samp{>}, or @samp{>=}.
@@ -3421,8 +3426,10 @@ to them.
 
 @item -Wempty-body
 @opindex Wempty-body
-An empty body occurs in an @samp{if}, @samp{else} or @samp{do while}
-statement.  This warning is also enabled by @option{-Wextra}.
+Warn if an empty body occurs in an @samp{if}, @samp{else} or @samp{do
+while} statement.  Additionally, in C++, warn when an empty body occurs
+in a @samp{while} or @samp{for} statement with no whitespacing before
+the semicolon.  This warning is also enabled by @option{-Wextra}.
 
 @item -Wsign-compare
 @opindex Wsign-compare