openmp: For C++ ensure nothing directive has no operands

When working on error directive, I've noticed that while C FE diagnosed
clauses on nothing directive which doesn't allow any, the C++ FE silently
accepted it.

2021-08-19  Jakub Jelinek  <jakub@redhat.com>

	* parser.c (cp_parser_omp_nothing): Use cp_parser_require_pragma_eol
	instead of cp_parser_skip_to_pragma_eol.

	* c-c++-common/gomp/nothing-2.c: New test.

diff --git a/gcc/cp/parser.c b/gcc/cp/parser.c
index 04116fbcef4a7e1c15c0bae5f315dc1dc2a2ebf3..1d48b8333fef47b44e9474140bb6140c022f94f6 100644 (file)
--- a/gcc/cp/parser.c
+++ b/gcc/cp/parser.c
@@ -45570,7 +45570,7 @@ cp_parser_omp_requires (cp_parser *parser, cp_token *pragma_tok)
 static void
 cp_parser_omp_nothing (cp_parser *parser, cp_token *pragma_tok)
 {
-  cp_parser_skip_to_pragma_eol (parser, pragma_tok);
+  cp_parser_require_pragma_eol (parser, pragma_tok);
 }
 
 

diff --git a/gcc/testsuite/c-c++-common/gomp/nothing-2.c b/gcc/testsuite/c-c++-common/gomp/nothing-2.c
new file mode 100644 (file)
index 0000000..a152035
--- /dev/null
+++ b/gcc/testsuite/c-c++-common/gomp/nothing-2.c
@@ -0,0 +1,2 @@
+#pragma omp nothing ,          /* { dg-error "expected end of line before" } */
+#pragma omp nothing asdf       /* { dg-error "expected end of line before" } */