From cc94389e7ce73c2ef9e248f003218cf0a6295e5f Mon Sep 17 00:00:00 2001
From: George Karpenkov <ekarpenkov@apple.com>
Date: Fri, 18 Jan 2019 03:13:14 +0000
Subject: [PATCH] [analyzer] const-ify reference to bug type used in
 BugReporter

Differential Revision: https://reviews.llvm.org/D56885

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@351511 91177308-0d34-0410-b5e6-96231b3b80d8
---
 .../StaticAnalyzer/Core/BugReporter/BugReporter.h    | 12 ++++++------
 .../RetainCountChecker/RetainCountDiagnostics.h      |  2 +-
 lib/StaticAnalyzer/Core/BugReporter.cpp              |  8 ++++----
 3 files changed, 11 insertions(+), 11 deletions(-)

diff --git a/include/clang/StaticAnalyzer/Core/BugReporter/BugReporter.h b/include/clang/StaticAnalyzer/Core/BugReporter/BugReporter.h
index 9041f4c1af..f830dc475b 100644
--- a/include/clang/StaticAnalyzer/Core/BugReporter/BugReporter.h
+++ b/include/clang/StaticAnalyzer/Core/BugReporter/BugReporter.h
@@ -95,7 +95,7 @@ protected:
   friend class BugReportEquivClass;
   friend class BugReporter;
 
-  BugType& BT;
+  const BugType& BT;
   const Decl *DeclWithIssue = nullptr;
   std::string ShortDescription;
   std::string Description;
@@ -164,15 +164,15 @@ private:
   void popInterestingSymbolsAndRegions();
 
 public:
-  BugReport(BugType& bt, StringRef desc, const ExplodedNode *errornode)
+  BugReport(const BugType& bt, StringRef desc, const ExplodedNode *errornode)
       : BT(bt), Description(desc), ErrorNode(errornode) {}
 
-  BugReport(BugType& bt, StringRef shortDesc, StringRef desc,
+  BugReport(const BugType& bt, StringRef shortDesc, StringRef desc,
             const ExplodedNode *errornode)
       : BT(bt), ShortDescription(shortDesc), Description(desc),
         ErrorNode(errornode) {}
 
-  BugReport(BugType &bt, StringRef desc, PathDiagnosticLocation l)
+  BugReport(const BugType &bt, StringRef desc, PathDiagnosticLocation l)
       : BT(bt), Description(desc), Location(l) {}
 
   /// Create a BugReport with a custom uniqueing location.
@@ -190,7 +190,7 @@ public:
   virtual ~BugReport();
 
   const BugType& getBugType() const { return BT; }
-  BugType& getBugType() { return BT; }
+  //BugType& getBugType() { return BT; }
 
   /// True when the report has an execution path associated with it.
   ///
@@ -481,7 +481,7 @@ public:
     return {};
   }
 
-  void Register(BugType *BT);
+  void Register(const BugType *BT);
 
   /// Add the given report to the set of reports tracked by BugReporter.
   ///
diff --git a/lib/StaticAnalyzer/Checkers/RetainCountChecker/RetainCountDiagnostics.h b/lib/StaticAnalyzer/Checkers/RetainCountChecker/RetainCountDiagnostics.h
index 52f1da3313..1365620de0 100644
--- a/lib/StaticAnalyzer/Checkers/RetainCountChecker/RetainCountDiagnostics.h
+++ b/lib/StaticAnalyzer/Checkers/RetainCountChecker/RetainCountDiagnostics.h
@@ -51,7 +51,7 @@ public:
               StringRef endText);
 
   llvm::iterator_range<ranges_iterator> getRanges() override {
-    const RefCountBug& BugTy = static_cast<RefCountBug&>(getBugType());
+    const RefCountBug& BugTy = static_cast<const RefCountBug&>(getBugType());
     if (!BugTy.isLeak())
       return BugReport::getRanges();
     return llvm::make_range(ranges_iterator(), ranges_iterator());
diff --git a/lib/StaticAnalyzer/Core/BugReporter.cpp b/lib/StaticAnalyzer/Core/BugReporter.cpp
index fd7f532104..c00bdcbacd 100644
--- a/lib/StaticAnalyzer/Core/BugReporter.cpp
+++ b/lib/StaticAnalyzer/Core/BugReporter.cpp
@@ -1247,7 +1247,7 @@ static void generatePathDiagnosticsForNode(const ExplodedNode *N,
 
 static std::unique_ptr<PathDiagnostic>
 generateEmptyDiagnosticForReport(BugReport *R, SourceManager &SM) {
-  BugType &BT = R->getBugType();
+  const BugType &BT = R->getBugType();
   return llvm::make_unique<PathDiagnostic>(
       R->getBugType().getCheckName(), R->getDeclWithIssue(),
       R->getBugType().getName(), R->getDescription(),
@@ -2684,7 +2684,7 @@ GRBugReporter::generatePathDiagnostics(
   return Out;
 }
 
-void BugReporter::Register(BugType *BT) {
+void BugReporter::Register(const BugType *BT) {
   BugTypes = F.add(BugTypes, BT);
 }
 
@@ -2718,7 +2718,7 @@ void BugReporter::emitReport(std::unique_ptr<BugReport> R) {
   R->Profile(ID);
 
   // Lookup the equivance class.  If there isn't one, create it.
-  BugType& BT = R->getBugType();
+  const BugType& BT = R->getBugType();
   Register(&BT);
   void *InsertPos;
   BugReportEquivClass* EQ = EQClasses.FindNodeOrInsertPos(ID, InsertPos);
@@ -2836,7 +2836,7 @@ FindReportInEquivalenceClass(BugReportEquivClass& EQ,
                              SmallVectorImpl<BugReport*> &bugReports) {
   BugReportEquivClass::iterator I = EQ.begin(), E = EQ.end();
   assert(I != E);
-  BugType& BT = I->getBugType();
+  const BugType& BT = I->getBugType();
 
   // If we don't need to suppress any of the nodes because they are
   // post-dominated by a sink, simply add all the nodes in the equivalence class
-- 
2.40.0