Hi!
This was fixed by r11-5866 aka PR96299 fix.
This just adds a testcase for it into the testsuite, tested
on x86_64-linux -m32/-m64, committed to trunk.
2021-04-13 Jakub Jelinek <ja...@redhat.com>
PR c++/97121
* g++.dg/cpp2a/spaceship-err6.C: New test.
--- gcc/testsuite/g++.dg/cpp2a/spaceship-err6.C.jj 2021-04-13
20:33:40.206442108 +0200
+++ gcc/testsuite/g++.dg/cpp2a/spaceship-err6.C 2021-04-13 20:38:23.740283353
+0200
@@ -0,0 +1,20 @@
+// PR c++/97121
+// { dg-do compile { target c++20 } }
+
+#include <compare>
+
+class MyClass
+{
+ int mValue; // { dg-error "three-way comparison of 'MyClass::mValue' has
type 'std::strong_ordering', which does not convert to 'bool'" }
+
+public:
+ MyClass(int value): mValue(value) {}
+
+ bool operator<=>(const MyClass&) const = default;
+};
+
+int main()
+{
+ MyClass a = 10, b = 15;
+ return (a < b); // { dg-error "use of deleted function 'constexpr bool
MyClass::operator<=>\\\(const MyClass&\\\) const'" }
+}
Jakub
