================
@@ -0,0 +1,15 @@
+// RUN: %clang_cc1 -std=gnu++20 -emit-llvm %s -o - >/dev/null
+
+int f() { return 1; }
+
+int test0() {
+ using X = int[f()];
+
+ struct S {
+ S() {
+ X x;
----------------
efriedma-quic wrote:
I think we should be rejecting this in Sema; we can't correctly compute the
size of a variably modified type from within a local class.
Consider a related example:
```
int f(int&);
struct IFace {
virtual int a() = 0;
virtual ~IFace();
};
IFace *test() {
int z = 10;
using X = int[f(z)];
struct S : public IFace {
int a() override { return sizeof(X); }
};
return new S;
}
```
How are we supposed to generate code for a() here?
https://github.com/llvm/llvm-project/pull/183933
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