Expose the name of the checker producing each diagnostic message.

Summary:
In clang-tidy we'd like to know the name of the checker producing each
diagnostic message. PathDiagnostic has BugType and Category fields, which are
both arbitrary human-readable strings, but we need to know the exact name of the
checker in the form that can be used in the CheckersControlList option to
enable/disable the specific checker.

This patch adds the CheckName field to the CheckerBase class, and sets it in
the CheckerManager::registerChecker() method, which gets them from the
CheckerRegistry.

Checkers that implement multiple checks have to store the names of each check
in the respective registerXXXChecker method.

Reviewers: jordan_rose, krememek

Reviewed By: jordan_rose

CC: cfe-commits

Differential Revision: http://llvm-reviews.chandlerc.com/D2557

llvm-svn: 201186

1 files changed, 3 insertions, 2 deletions

diff --git a/clang/lib/StaticAnalyzer/Checkers/DereferenceChecker.cpp b/clang/lib/StaticAnalyzer/Checkers/DereferenceChecker.cpp
index 72d46c50e10..6ca7879c12f 100644
--- a/clang/lib/StaticAnalyzer/Checkers/DereferenceChecker.cpp
+++ b/clang/lib/StaticAnalyzer/Checkers/DereferenceChecker.cpp
@@ -97,7 +97,7 @@ void DereferenceChecker::reportBug(ProgramStateRef State, const Stmt *S,
   // We know that 'location' cannot be non-null.  This is what
   // we call an "explicit" null dereference.
   if (!BT_null)
-    BT_null.reset(new BuiltinBug("Dereference of null pointer"));
+    BT_null.reset(new BuiltinBug(this, "Dereference of null pointer"));
 
   SmallString<100> buf;
   llvm::raw_svector_ostream os(buf);
@@ -180,7 +180,8 @@ void DereferenceChecker::checkLocation(SVal l, bool isLoad, const Stmt* S,
   if (l.isUndef()) {
     if (ExplodedNode *N = C.generateSink()) {
       if (!BT_undef)
-        BT_undef.reset(new BuiltinBug("Dereference of undefined pointer value"));
+        BT_undef.reset(
+            new BuiltinBug(this, "Dereference of undefined pointer value"));
 
       BugReport *report =
         new BugReport(*BT_undef, BT_undef->getDescription(), N);