[clang] [Clang] Optimize -Wunsafe-buffer-usage. (PR #125492)

[Ilya Biryukov via cfe-commits]

================
@@ -1505,23 +1741,51 @@ class DataInvocationGadget : public WarningGadget {
   const ExplicitCastExpr *Op;
 
 public:
-  DataInvocationGadget(const MatchFinder::MatchResult &Result)
+  DataInvocationGadget(const MatchResult &Result)
       : WarningGadget(Kind::DataInvocation),
-        Op(Result.Nodes.getNodeAs<ExplicitCastExpr>(OpTag)) {}
+        Op(Result.getNodeAs<ExplicitCastExpr>(OpTag)) {}
 
   static bool classof(const Gadget *G) {
     return G->getKind() == Kind::DataInvocation;
   }
 
-  static Matcher matcher() {
+  static bool checkCallExpr(const CXXMemberCallExpr *call) {
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ilya-biryukov wrote:

NITS:
- let's keep this function private
- let's rename to something a bit more descriptive, e.g. `isDataFunction`

https://github.com/llvm/llvm-project/pull/125492
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