[clang] [Clang] [Sema] Always rebuild `this` if captured by value in a lambda with a dependent explicit object parameter (PR #154276)

[Corentin Jabot via cfe-commits]

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@@ -264,3 +264,28 @@ void test() {
 // CHECK: call void @_ZNH5P27971C1cERKS0_
 // CHECK: call void @_ZN5P27971C1cEi
 }
+
+// This used to crash because we weren’t instantiating a dependent 'this'.
+namespace GH154054 {
+struct S {
+  int x;
+  auto byval() {
+    return [*this](this auto) { return this->x; };
+  }
+};
+
+void main() {
+  S s{ 42 };
+
+  if ( s.byval()() != 42)
+    __builtin_abort();
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cor3ntin wrote:

This doesn't do much, maybe we want check lines to verify we refer to the correct object?

https://github.com/llvm/llvm-project/pull/154276