[clang] [clang][analyzer] Add checker 'core.NullPointerArithm' (PR #157129)

[Balázs Kéri via cfe-commits]

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@@ -173,9 +178,11 @@ static bool isDeclRefExprToReference(const Expr *E) {
   return false;
 }
 
-void DereferenceChecker::reportBug(const DerefBugType &BT,
-                                   ProgramStateRef State, const Stmt *S,
-                                   CheckerContext &C) const {
+void DereferenceChecker::reportDerefBug(const DerefBugType &BT,
+                                        ProgramStateRef State, const Stmt *S,
+                                        CheckerContext &C) const {
+  assert(&BT != &NullPointerArithmBug && "Invalid use of function");
+
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balazske wrote:

During development I was using `DerefBugType` for the new bug type too.

https://github.com/llvm/llvm-project/pull/157129