method.c (lookup_comparison_result): Use %qD instead of %<%T::%D%> to print the decl.

	* method.c (lookup_comparison_result): Use %qD instead of %<%T::%D%>
	to print the decl.
	(lookup_comparison_category): Use %qD instead of %<std::%D%> to print
	the decl.

	* g++.dg/cpp2a/spaceship-err3.C: New test.

From-SVN: r278375

gcc/cp/ChangeLog

+2019-11-17  Jakub Jelinek  <jakub@redhat.com>
+
+	* method.c (lookup_comparison_result): Use %qD instead of %<%T::%D%>
+	to print the decl.
+	(lookup_comparison_category): Use %qD instead of %<std::%D%> to print
+	the decl.
+
 2019-11-15  Paolo Carlini  <paolo.carlini@oracle.com>
 
 	* typeck.c (cp_truthvalue_conversion): Add tsubst_flags_t parameter

gcc/cp/method.c

@@ -924,7 +924,7 @@ lookup_comparison_result (tree type, const char *name_str,
 	  if (decl == error_mark_node || TREE_CODE (decl) == TREE_LIST)
 	    qualified_name_lookup_error (type, name, decl, input_location);
 	  else
-	    error ("%<%T::%D%> is not a static data member", type, decl);
+	    error ("%qD is not a static data member", decl);
 	  inform (input_location, "determining value of %qs", "operator<=>");
 	}
       return error_mark_node;
@@ -951,7 +951,7 @@ lookup_comparison_category (comp_cat_tag tag,
 	  if (decl == error_mark_node || TREE_CODE (decl) == TREE_LIST)
 	    qualified_name_lookup_error (std_node, name, decl, input_location);
 	  else
-	    error ("%<std::%D%> is not a type", decl);
+	    error ("%qD is not a type", decl);
 	  inform (input_location, "forming type of %qs", "operator<=>");
 	}
       return error_mark_node;

gcc/testsuite/ChangeLog

+2019-11-17  Jakub Jelinek  <jakub@redhat.com>
+
+	* g++.dg/cpp2a/spaceship-err3.C: New test.
+
 2019-11-16  Richard Sandiford  <richard.sandiford@arm.com>
 
 	* gcc.dg/vect/vect-alias-check-18.c: New test.

gcc/testsuite/g++.dg/cpp2a/spaceship-err3.C

+// { dg-do compile { target c++2a } }
+
+namespace std
+{
+  int strong_ordering;
+  struct partial_ordering {
+    static int equivalent ();
+  };
+}
+
+auto a = 1 <=> 2;	// { dg-error "'std::strong_ordering' is not a type" }
+			// { dg-message "forming type of 'operator<=>'" "" { target *-*-* } .-1 }
+auto b = 3.0 <=> 4.0;	// { dg-error "'std::partial_ordering::equivalent\\(\\)' is not a static data member" }
+			// { dg-message "determining value of 'operator<=>'" "" { target *-*-* } .-1 }