OpenMP: Improve C/C++ parsing error message [PR109999]

Replace
  error: expected '#pragma omp' clause before ...
by the the more readable/clearer
  error: expected an OpenMP clause before ...

(And likewise for '#pragma acc' and OpenACC.)

	PR c/109999

gcc/c/ChangeLog:

	* c-parser.cc (c_parser_oacc_all_clauses,
	c_parser_omp_all_clauses): Improve error wording.

gcc/cp/ChangeLog:

	* parser.cc (cp_parser_oacc_all_clauses,
	cp_parser_omp_all_clauses): Improve error wording.

gcc/testsuite/ChangeLog:

	* c-c++-common/goacc/asyncwait-1.c: Update dg-error.
	* c-c++-common/goacc/clauses-fail.c: Likewise.
	* c-c++-common/goacc/data-2.c: Likewise.
	* c-c++-common/gomp/declare-target-2.c: Likewise.
	* c-c++-common/gomp/directive-1.c: Likewise.
	* g++.dg/goacc/data-1.C: Likewise.

1 files changed, 2 insertions, 2 deletions

diff --git a/gcc/c/c-parser.cc b/gcc/c/c-parser.cc
index 0ec7534..5baa501 100644
--- a/gcc/c/c-parser.cc
+++ b/gcc/c/c-parser.cc
@@ -17692,7 +17692,7 @@ c_parser_oacc_all_clauses (c_parser *parser, omp_clause_mask mask,
 						c_name, clauses);
 	  break;
 	default:
-	  c_parser_error (parser, "expected %<#pragma acc%> clause");
+	  c_parser_error (parser, "expected an OpenACC clause");
 	  goto saw_error;
 	}
 
@@ -18050,7 +18050,7 @@ c_parser_omp_all_clauses (c_parser *parser, omp_clause_mask mask,
 	  c_name = "enter";
 	  break;
 	default:
-	  c_parser_error (parser, "expected %<#pragma omp%> clause");
+	  c_parser_error (parser, "expected an OpenMP clause");
 	  goto saw_error;
 	}