libstdc++: Update default -std for testsuite

libstdc++-v3/ChangeLog:

	* testsuite/lib/libstdc++.exp (dg-v3-runtest) Set default_std to
	20.

Reviewed-by: Tomasz Kamiński <tkaminsk@redhat.com>

diff --git a/libstdc++-v3/testsuite/lib/libstdc++.exp b/libstdc++-v3/testsuite/lib/libstdc++.exp
index b1593e42f94199e65306ac431acaef8cfeafbc5c..b11f4a34dfa1d1cda863edccd6d2574c52ec96bd 100644 (file)
--- a/libstdc++-v3/testsuite/lib/libstdc++.exp
+++ b/libstdc++-v3/testsuite/lib/libstdc++.exp
@@ -533,7 +533,7 @@ proc v3-dg-runtest { testcases flags default-extra-flags } {
                # single test.
                # These should be adjusted whenever the default -std is
                # updated or newer C++ effective target is added.
-               set default_std 17
+               set default_std 20
                set max_std 26
                set min_std [v3-minimum-std $test $default_std $max_std]
                if { $min_std > $default_std } {