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* [gcc r11-9122] libstdc++: Fix test that fails for C++20
@ 2021-10-12 16:24 Jonathan Wakely
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From: Jonathan Wakely @ 2021-10-12 16:24 UTC (permalink / raw)
To: gcc-cvs, libstdc++-cvs
https://gcc.gnu.org/g:8104d4fff6202dabcb2eef7406f64d26f97f341d
commit r11-9122-g8104d4fff6202dabcb2eef7406f64d26f97f341d
Author: Jonathan Wakely <jwakely@redhat.com>
Date: Tue Oct 12 15:39:18 2021 +0100
libstdc++: Fix test that fails for C++20
Restore the test for 'a < a' that was removed by r12-2537 because
it is ill-formed. We still want to test operator< for tuple, we just
need to not use std::nullptr_t in that tuple type.
libstdc++-v3/ChangeLog:
* testsuite/20_util/tuple/comparison_operators/overloaded.cc:
Restore test for operator<.
(cherry picked from commit 727137d6ca6d3d401a0c1b4df6b9aae8b97dacd5)
Diff:
---
.../testsuite/20_util/tuple/comparison_operators/overloaded.cc | 7 ++++++-
1 file changed, 6 insertions(+), 1 deletion(-)
diff --git a/libstdc++-v3/testsuite/20_util/tuple/comparison_operators/overloaded.cc b/libstdc++-v3/testsuite/20_util/tuple/comparison_operators/overloaded.cc
index a25c374a932..a9bc2c7dfb5 100644
--- a/libstdc++-v3/testsuite/20_util/tuple/comparison_operators/overloaded.cc
+++ b/libstdc++-v3/testsuite/20_util/tuple/comparison_operators/overloaded.cc
@@ -48,4 +48,9 @@ TwistedLogic operator<(const Compares&, const Compares&) { return {false}; }
auto a = std::make_tuple(nullptr, Compares{}, 2, 'U');
auto b = a == a;
-auto c = a < a;
+
+#if ! __cpp_lib_three_way_comparison
+// Not valid in C++20, because TwistedLogic doesn't model boolean-testable.
+auto c = std::make_tuple("", Compares{}, 2, 'U');
+auto d = c < c;
+#endif
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2021-10-12 16:24 [gcc r11-9122] libstdc++: Fix test that fails for C++20 Jonathan Wakely
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