Check for NULL child expressions before visiting them, as the first

thing the visit does is dyn_cast<>, which leads to a nasty segfault.

llvm-svn: 125993

1 files changed, 2 insertions, 1 deletions

diff --git a/clang/include/clang/AST/EvaluatedExprVisitor.h b/clang/include/clang/AST/EvaluatedExprVisitor.h
index 5616d8822e5..035f57c12ea 100644
--- a/clang/include/clang/AST/EvaluatedExprVisitor.h
+++ b/clang/include/clang/AST/EvaluatedExprVisitor.h
@@ -72,7 +72,8 @@ public:
   /// expression, assuming they are all potentially evaluated.
   void VisitStmt(Stmt *S) {
     for (Stmt::child_range C = S->children(); C; ++C)
-      this->Visit(*C);
+      if (*C)
+        this->Visit(*C);
   }
 };