--- a/gcc/testsuite/g++.dg/lookup/suggestions1.C	Thu Oct 25 07:37:49 2018 +0900
+++ b/gcc/testsuite/g++.dg/lookup/suggestions1.C	Thu Feb 13 11:34:05 2020 +0900
@@ -1,8 +1,6 @@
 // { dg-do compile }
 
-namespace N { namespace M { int foo; } } // { dg-message "N::M::foo" }
-int f (void) { return N::foo; }		 // { dg-error "not a member" }
-// { dg-message "suggested alternative" "missing namespace" { target *-*-* } .-1 }
+namespace N { namespace M { int foo; } } // { dg-message "'N::M::foo' declared here" }
+int f (void) { return N::foo; }		 // { dg-error "'foo' is not a member of 'N'; did you mean 'N::M::foo'\\?" }
 
-int g (void) { return ::foo; }	// { dg-error "not been declared" }
-// { dg-message "suggested alternative" "omitted namespace" { target *-*-* } .-1 }
+int g (void) { return ::foo; }	// { dg-error "'::foo' has not been declared; did you mean 'N::M::foo'\\?" }