Hi Jan,
The test causes
WARNING: lto.exp does not support dg-do
WARNING: lto.exp does not support dg-options in primary source file
This is fixed by the following patch
--- ../_clean/gcc/testsuite/g++.dg/lto/pr89358_0.C 2019-04-15
00:04:48.000000000 +0200
+++ gcc/testsuite/g++.dg/lto/pr89358_0.C 2019-04-16 13:13:14.000000000
+0200
@@ -1,5 +1,5 @@
-/* { dg-do link } */
-/* { dg-options "-std=c++17" } */
+/* { dg-lto-do link } */
+/* { dg-lto-options "-std=c++17" } */
#include <map>
extern void test();
--- ../_clean/gcc/testsuite/g++.dg/lto/pr89358_1.C 2019-04-15
00:04:48.000000000 +0200
+++ gcc/testsuite/g++.dg/lto/pr89358_1.C 2019-04-16 13:14:44.000000000
+0200
@@ -1,4 +1,3 @@
-/* { dg-options "-std=c++14" } */
#include <map>
void test()
TIA
Dominique
