In VirtualCallChecker, handle indirect calls

Summary:
In VirtualCallChecker, handle indirect calls.

getDirectCallee() can be nullptr, and dyn_cast(nullptr) is UB

Reviewers: bkramer

Subscribers: cfe-commits

Differential Revision: https://reviews.llvm.org/D29303

llvm-svn: 293604

1 files changed, 11 insertions, 0 deletions

diff --git a/clang/test/Analysis/virtualcall.cpp b/clang/test/Analysis/virtualcall.cpp
index e42b898a073..311f0a137c6 100644
--- a/clang/test/Analysis/virtualcall.cpp
+++ b/clang/test/Analysis/virtualcall.cpp
@@ -115,12 +115,23 @@ public:
   int foo() override;
 };
 
+// Regression test: don't crash when there's no direct callee.
+class F {
+public:
+  F() {
+    void (F::* ptr)() = &F::foo;
+    (this->*ptr)();
+  }
+  void foo();
+};
+
 int main() {
   A *a;
   B *b;
   C *c;
   D *d;
   E *e;
+  F *f;
 }
 
 #include "virtualcall.h"