[clang] [clang][bytecode] Don't implicitly begin union member lifetime... (PR #192212)

[Timm Baeder via cfe-commits]

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@@ -5609,6 +5610,8 @@ bool Compiler<Emitter>::VisitCallExpr(const CallExpr *E) {
     assert(Args.size() == 2);
     IsAssignmentOperatorCall = true;
     std::reverse(Args.begin(), Args.end());
+    const CXXRecordDecl *LHSRecord = Args[0]->getType()->getAsCXXRecordDecl();
+    ActivateLHS = !LHSRecord || LHSRecord->hasTrivialDefaultConstructor();
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tbaederr wrote:

Yeah, I was just confused. `Args[0]` wasn't even the LHS here because it was after the `reverse()`.

https://github.com/llvm/llvm-project/pull/192212