[clang] [clang][Sema] Warn on self move for inlined static cast (PR #76646)

[Timm Baeder via cfe-commits]

================
@@ -18843,17 +18843,26 @@ void Sema::DiagnoseSelfMove(const Expr *LHSExpr, 
const Expr *RHSExpr,
   LHSExpr = LHSExpr->IgnoreParenImpCasts();
   RHSExpr = RHSExpr->IgnoreParenImpCasts();
 
-  // Check for a call expression
+  // Check for a call expression or static_cast expression
   const CallExpr *CE = dyn_cast<CallExpr>(RHSExpr);
-  if (!CE || CE->getNumArgs() != 1)
+  const CXXStaticCastExpr *CXXSCE = dyn_cast<CXXStaticCastExpr>(RHSExpr);
----------------
tbaederr wrote:

```suggestion
  const auto *CXXSCE = dyn_cast<CXXStaticCastExpr>(RHSExpr);
```

https://github.com/llvm/llvm-project/pull/76646
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