================
@@ -0,0 +1,115 @@
+// RUN: %clang_cc1 -std=c++2a -verify %s
+
+struct A {
+ int a, b[3], c;
+ bool operator==(const A&) const = default;
+};
+
+constexpr auto a0 = A{0, 0, 3, 4, 5};
+
+// expected-note@+1 {{evaluates to 'A{0, {0, 3, 4}, 5} == A{1, {2, 3, 4}, 5}'}}
+static_assert(a0 == A{1, {2, 3, 4}, 5}); // expected-error {{failed}}
+
+struct _arr {
+ const int b[3];
+ constexpr bool operator==(const int rhs[3]) const {
+ for (unsigned i = 0; i < sizeof(b) / sizeof(int); i++)
+ if (b[i] != rhs[i])
+ return false;
+ return true;
+ }
+};
+
+// expected-note@+1 {{{evaluates to '_arr{{2, 3, 4}} == (int[3]){0, 3, 4}'}}}
+static_assert(_arr{2, 3, 4} == a0.b); // expected-error {{failed}}
----------------
sethp wrote:
Ah, happily this is resolved by doing less work: the `const` qualifier from
`(const int [3]){0}` is semantically important here, and the type printer
already "knows" how to print qualified types appropriately.
https://github.com/llvm/llvm-project/pull/74852
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