[Bug testsuite/92165] [10 regression] g++.dg/cpp2a/nodiscard-once.C fails starting with r277205

[seurer at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=92165

--- Comment #1 from seurer at gcc dot gnu.org ---
Also these:

FAIL: g++.dg/cpp2a/nodiscard-reason.C  -std=gnu++2a  (test for warnings, line
16)
FAIL: g++.dg/cpp2a/nodiscard-reason.C  -std=gnu++2a  (test for warnings, line
17)
FAIL: g++.dg/cpp2a/nodiscard-reason.C  -std=gnu++2a  (test for warnings, line
176)
FAIL: g++.dg/cpp2a/nodiscard-reason.C  -std=gnu++2a  (test for warnings, line
178)
FAIL: g++.dg/cpp2a/nodiscard-reason.C  -std=gnu++2a  (test for warnings, line
183)
FAIL: g++.dg/cpp2a/nodiscard-reason.C  -std=gnu++2a  (test for warnings, line
185)
FAIL: g++.dg/cpp2a/nodiscard-reason.C  -std=gnu++2a  (test for warnings, line
190)
FAIL: g++.dg/cpp2a/nodiscard-reason.C  -std=gnu++2a  (test for warnings, line
192)
FAIL: g++.dg/cpp2a/nodiscard-reason.C  -std=gnu++2a (test for excess errors)