--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/gcc/testsuite/c-c++-common/goacc/clause-locations.c	Thu Feb 13 11:34:05 2020 +0900
@@ -0,0 +1,19 @@
+/* Verify that the location information for clauses is correct. */
+
+void
+check_clause_columns() {
+  int i, j, sum, diff;
+
+  #pragma acc parallel
+  {
+    #pragma acc loop reduction(+:sum)
+    for (i = 1; i <= 10; i++)
+      {
+        #pragma acc loop reduction(-:diff) reduction(-:sum)
+	/* { dg-warning "53: conflicting reduction operations for .sum." "" { target c } .-1 } */
+	/* { dg-warning "56: conflicting reduction operations for .sum." "" { target c++ } .-2 } */
+	for (j = 1; j <= 10; j++)
+	  sum = 1;
+      }
+  }
+}