[clang] Assertion `!isNull() && "Cannot retrieve a NULL type pointer"` with expansion statement (PR #218710)

[Ambrose Leeb via cfe-commits]

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@@ -521,16 +521,40 @@ ExprResult Parser::ParseExpansionInitList() {
   T.consumeOpen();
 
   ExprVector InitExprs;
+  bool SawError = false;
+  while (Tok.isNot(tok::r_brace)) {
+    ExprResult Elem = Tok.is(tok::l_brace) ? ParseBraceInitializer()
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Sirraide wrote:

I believe you’d have to push the expression evaluation context for each element here when we parse it

https://github.com/llvm/llvm-project/pull/218710