[clang] [clang] Respect the lifetimebound in assignment operator. (PR #106997)

[Haojian Wu via cfe-commits]

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@@ -968,6 +972,23 @@ static bool pathOnlyHandlesGslPointer(IndirectLocalPath &Path) {
   return false;
 }
 
+static bool isAssginmentOperatorLifetimeBound(CXXMethodDecl *CMD) {
+  if (!CMD)
+    return false;
+  assert(CMD->getOverloadedOperator() == OverloadedOperatorKind::OO_Equal);
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hokein wrote:

It is impossible to hit compound assignment operator for the current implementation, we only set the  `AssignedEntity::AssignmentOperator` for the `OO_Equal` case (see the `clang/lib/Sema/SemaOverload.cpp`)

It is possible/trivial to support them, but I don't have plan to do it (I guess they should be rare in practice).

To avoid the confusion, I think we can just drop this assertion.

https://github.com/llvm/llvm-project/pull/106997