Add missing boundary checks to variable completion.

Summary: Stopgap patch to at least stop all the crashes I get from this code.

Subscribers: lldb-commits

Differential Revision: https://reviews.llvm.org/D49949

llvm-svn: 338177

1 files changed, 9 insertions, 2 deletions

diff --git a/lldb/packages/Python/lldbsuite/test/functionalities/completion/main.cpp b/lldb/packages/Python/lldbsuite/test/functionalities/completion/main.cpp
index b408720d2cd..0814bb9cc0a 100644
--- a/lldb/packages/Python/lldbsuite/test/functionalities/completion/main.cpp
+++ b/lldb/packages/Python/lldbsuite/test/functionalities/completion/main.cpp
@@ -7,8 +7,15 @@ public:
     }
 };
 
+struct Container { int MemberVar; };
+
 int main()
 {
-    Foo f;
-    f.Bar(1, 2);
+    Foo fooo;
+    Foo *ptr_fooo = &fooo;
+    fooo.Bar(1, 2);
+
+    Container container;
+    Container *ptr_container = &container;
+    return container.MemberVar = 3; // Break here
 }