[analyzer] Re-apply r283092, attempt no.4, chunk no.4 (last)

The problem that caused the msvc crash has been indentified and fixed
in the previous commit. This patch contains the rest of r283092.

llvm-svn: 283584

1 files changed, 39 insertions, 15 deletions

diff --git a/clang/lib/StaticAnalyzer/Core/BugReporter.cpp b/clang/lib/StaticAnalyzer/Core/BugReporter.cpp
index 578cbdc3660..24dc887c1c2 100644
--- a/clang/lib/StaticAnalyzer/Core/BugReporter.cpp
+++ b/clang/lib/StaticAnalyzer/Core/BugReporter.cpp
@@ -3410,25 +3410,28 @@ void BugReporter::FlushReport(BugReport *exampleReport,
       exampleReport->getUniqueingLocation(),
       exampleReport->getUniqueingDecl()));
 
-  MaxBugClassSize = std::max(bugReports.size(),
-                             static_cast<size_t>(MaxBugClassSize));
-
-  // Generate the full path diagnostic, using the generation scheme
-  // specified by the PathDiagnosticConsumer. Note that we have to generate
-  // path diagnostics even for consumers which do not support paths, because
-  // the BugReporterVisitors may mark this bug as a false positive.
-  if (!bugReports.empty())
+  if (exampleReport->isPathSensitive()) {
+    // Generate the full path diagnostic, using the generation scheme
+    // specified by the PathDiagnosticConsumer. Note that we have to generate
+    // path diagnostics even for consumers which do not support paths, because
+    // the BugReporterVisitors may mark this bug as a false positive.
+    assert(!bugReports.empty());
+
+    MaxBugClassSize =
+        std::max(bugReports.size(), static_cast<size_t>(MaxBugClassSize));
+
     if (!generatePathDiagnostic(*D.get(), PD, bugReports))
       return;
 
-  MaxValidBugClassSize = std::max(bugReports.size(),
-                                  static_cast<size_t>(MaxValidBugClassSize));
+    MaxValidBugClassSize =
+        std::max(bugReports.size(), static_cast<size_t>(MaxValidBugClassSize));
 
-  // Examine the report and see if the last piece is in a header. Reset the
-  // report location to the last piece in the main source file.
-  AnalyzerOptions& Opts = getAnalyzerOptions();
-  if (Opts.shouldReportIssuesInMainSourceFile() && !Opts.AnalyzeAll)
-    D->resetDiagnosticLocationToMainFile();
+    // Examine the report and see if the last piece is in a header. Reset the
+    // report location to the last piece in the main source file.
+    AnalyzerOptions &Opts = getAnalyzerOptions();
+    if (Opts.shouldReportIssuesInMainSourceFile() && !Opts.AnalyzeAll)
+      D->resetDiagnosticLocationToMainFile();
+  }
 
   // If the path is empty, generate a single step path with the location
   // of the issue.
@@ -3441,6 +3444,27 @@ void BugReporter::FlushReport(BugReport *exampleReport,
     D->setEndOfPath(std::move(piece));
   }
 
+  PathPieces &Pieces = D->getMutablePieces();
+  if (getAnalyzerOptions().shouldDisplayNotesAsEvents()) {
+    // For path diagnostic consumers that don't support extra notes,
+    // we may optionally convert those to path notes.
+    for (auto I = exampleReport->getNotes().rbegin(),
+              E = exampleReport->getNotes().rend(); I != E; ++I) {
+      PathDiagnosticNotePiece *Piece = I->get();
+      PathDiagnosticEventPiece *ConvertedPiece =
+          new PathDiagnosticEventPiece(Piece->getLocation(),
+                                       Piece->getString());
+      for (const auto &R: Piece->getRanges())
+        ConvertedPiece->addRange(R);
+
+      Pieces.push_front(ConvertedPiece);
+    }
+  } else {
+    for (auto I = exampleReport->getNotes().rbegin(),
+              E = exampleReport->getNotes().rend(); I != E; ++I)
+      Pieces.push_front(*I);
+  }
+
   // Get the meta data.
   const BugReport::ExtraTextList &Meta = exampleReport->getExtraText();
   for (BugReport::ExtraTextList::const_iterator i = Meta.begin(),