[clang] Adding optin.taint.TaintedDiv checker (PR #106389)

[via cfe-commits]

github-actions[bot] wrote:

<!--LLVM CODE FORMAT COMMENT: {clang-format}-->


:warning: C/C++ code formatter, clang-format found issues in your code. :warning:

<details>
<summary>
You can test this locally with the following command:
</summary>

``````````bash
git-clang-format --diff c992690179eb5de6efe47d5c8f3a23f2302723f2 adf8f04eac4ff6e71c985bb991f68c2238a3462f --extensions cpp,c,h -- clang/include/clang/StaticAnalyzer/Core/CheckerManager.h clang/lib/StaticAnalyzer/Checkers/DivZeroChecker.cpp clang/test/Analysis/taint-diagnostic-visitor.c clang/test/Analysis/taint-generic.c
``````````

</details>

<details>
<summary>
View the diff from clang-format here.
</summary>

``````````diff
diff --git a/clang/include/clang/StaticAnalyzer/Core/CheckerManager.h b/clang/include/clang/StaticAnalyzer/Core/CheckerManager.h
index e900ef0c17..e47c0c310e 100644
--- a/clang/include/clang/StaticAnalyzer/Core/CheckerManager.h
+++ b/clang/include/clang/StaticAnalyzer/Core/CheckerManager.h
@@ -223,9 +223,7 @@ public:
     return static_cast<CHECKER *>(CheckerTags[tag]);
   }
 
-
-  template <typename CHECKER>
-  bool isRegisteredChecker() {
+  template <typename CHECKER> bool isRegisteredChecker() {
     CheckerTag tag = getTag<CHECKER>();
     return (CheckerTags.count(tag) != 0);
   }
diff --git a/clang/lib/StaticAnalyzer/Checkers/DivZeroChecker.cpp b/clang/lib/StaticAnalyzer/Checkers/DivZeroChecker.cpp
index 60e06ad699..da160f1330 100644
--- a/clang/lib/StaticAnalyzer/Checkers/DivZeroChecker.cpp
+++ b/clang/lib/StaticAnalyzer/Checkers/DivZeroChecker.cpp
@@ -25,7 +25,7 @@ using namespace ento;
 using namespace taint;
 
 namespace {
-class DivZeroChecker : public Checker< check::PreStmt<BinaryOperator> > {
+class DivZeroChecker : public Checker<check::PreStmt<BinaryOperator>> {
   void reportBug(StringRef Msg, ProgramStateRef StateZero,
                  CheckerContext &C) const;
   void reportTaintBug(StringRef Msg, ProgramStateRef StateZero,
@@ -34,11 +34,7 @@ class DivZeroChecker : public Checker< check::PreStmt<BinaryOperator> > {
 
 public:
   /// This checker class implements multiple user facing checker
-  enum CheckKind {
-    CK_DivZeroChecker,
-    CK_TaintedDivChecker,
-    CK_NumCheckKinds
-  };
+  enum CheckKind { CK_DivZeroChecker, CK_TaintedDivChecker, CK_NumCheckKinds };
   bool ChecksEnabled[CK_NumCheckKinds] = {false};
   CheckerNameRef CheckNames[CK_NumCheckKinds];
   mutable std::unique_ptr<BugType> BugTypes[CK_NumCheckKinds];
@@ -59,11 +55,11 @@ void DivZeroChecker::reportBug(StringRef Msg, ProgramStateRef StateZero,
   if (!ChecksEnabled[CK_DivZeroChecker])
     return;
   if (!BugTypes[CK_DivZeroChecker])
-      BugTypes[CK_DivZeroChecker].reset(new BugType(
-                                           CheckNames[CK_DivZeroChecker],
-                                           "Division by zero"));
+    BugTypes[CK_DivZeroChecker].reset(
+        new BugType(CheckNames[CK_DivZeroChecker], "Division by zero"));
   if (ExplodedNode *N = C.generateErrorNode(StateZero)) {
-    auto R = std::make_unique<PathSensitiveBugReport>(*BugTypes[CK_DivZeroChecker], Msg, N);
+    auto R = std::make_unique<PathSensitiveBugReport>(
+        *BugTypes[CK_DivZeroChecker], Msg, N);
     bugreporter::trackExpressionValue(N, getDenomExpr(N), *R);
     C.emitReport(std::move(R));
   }
@@ -75,10 +71,9 @@ void DivZeroChecker::reportTaintBug(
   if (!ChecksEnabled[CK_TaintedDivChecker])
     return;
   if (!BugTypes[CK_TaintedDivChecker])
-      BugTypes[CK_TaintedDivChecker].reset(new BugType(
-                                           CheckNames[CK_TaintedDivChecker],
-                                           "Division by zero",
-                                           categories::TaintedData));
+    BugTypes[CK_TaintedDivChecker].reset(
+        new BugType(CheckNames[CK_TaintedDivChecker], "Division by zero",
+                    categories::TaintedData));
   if (ExplodedNode *N = C.generateErrorNode(StateZero)) {
     auto R = std::make_unique<PathSensitiveBugReport>(
         *BugTypes[CK_TaintedDivChecker], Msg, N);
@@ -135,10 +130,11 @@ void DivZeroChecker::checkPreStmt(const BinaryOperator *B,
 }
 
 void ento::registerDivZeroChecker(CheckerManager &mgr) {
-  DivZeroChecker *checker = mgr.registerChecker<DivZeroChecker>();;
+  DivZeroChecker *checker = mgr.registerChecker<DivZeroChecker>();
+  ;
   checker->ChecksEnabled[DivZeroChecker::CK_DivZeroChecker] = true;
   checker->CheckNames[DivZeroChecker::CK_DivZeroChecker] =
-    mgr.getCurrentCheckerName();
+      mgr.getCurrentCheckerName();
 }
 
 bool ento::shouldRegisterDivZeroChecker(const CheckerManager &mgr) {
@@ -148,12 +144,12 @@ bool ento::shouldRegisterDivZeroChecker(const CheckerManager &mgr) {
 void ento::registerTaintedDivChecker(CheckerManager &mgr) {
   DivZeroChecker *checker;
   if (!mgr.isRegisteredChecker<DivZeroChecker>())
-     checker = mgr.registerChecker<DivZeroChecker>();
+    checker = mgr.registerChecker<DivZeroChecker>();
   else
     checker = mgr.getChecker<DivZeroChecker>();
   checker->ChecksEnabled[DivZeroChecker::CK_TaintedDivChecker] = true;
   checker->CheckNames[DivZeroChecker::CK_TaintedDivChecker] =
-    mgr.getCurrentCheckerName();
+      mgr.getCurrentCheckerName();
 }
 
 bool ento::shouldRegisterTaintedDivChecker(const CheckerManager &mgr) {

``````````

</details>


https://github.com/llvm/llvm-project/pull/106389