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, 5 insertions, 4 deletions

diff --git a/clang/lib/StaticAnalyzer/Checkers/CastToStructChecker.cpp b/clang/lib/StaticAnalyzer/Checkers/CastToStructChecker.cpp
index 60348c73584..e9c7599e153 100644
--- a/clang/lib/StaticAnalyzer/Checkers/CastToStructChecker.cpp
+++ b/clang/lib/StaticAnalyzer/Checkers/CastToStructChecker.cpp
@@ -58,10 +58,11 @@ void CastToStructChecker::checkPreStmt(const CastExpr *CE,
   if (!OrigPointeeTy->isRecordType()) {
     if (ExplodedNode *N = C.addTransition()) {
       if (!BT)
-        BT.reset(new BuiltinBug("Cast from non-struct type to struct type",
-                            "Casting a non-structure type to a structure type "
-                            "and accessing a field can lead to memory access "
-                            "errors or data corruption."));
+        BT.reset(
+            new BuiltinBug(this, "Cast from non-struct type to struct type",
+                           "Casting a non-structure type to a structure type "
+                           "and accessing a field can lead to memory access "
+                           "errors or data corruption."));
       BugReport *R = new BugReport(*BT,BT->getDescription(), N);
       R->addRange(CE->getSourceRange());
       C.emitReport(R);