[clang] [Clang] Complete the element type when list-initializing an array of unknown bound (PR #221488)

[Shengxin Pei via cfe-commits]

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+// RUN: %clang_cc1 -std=c++17 -fsyntax-only -verify %s
+// RUN: %clang_cc1 -std=c++20 -fsyntax-only -verify %s
+
+// List-initializing a temporary array of unknown bound from an empty list
+// creates a zero-length array whose element type was never completed, and
+// destructor lookup on the uninstantiated (or forward-declared) element type
+// crashed. https://github.com/llvm/llvm-project/issues/217883
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TPPPP72 wrote:

We don't need these comments

https://github.com/llvm/llvm-project/pull/221488