Fixed a serious bug in DeportType where the types could retain DeclContexts that

pointed into the artificial function constructed for the expression.  I now make
anything that pointed to the function as its DeclContext be global while the
copy occurs; afterward I restored the old DeclContext.

Added a testcase that make sure that this works properly and doesn't crash
anything.

<rdar://problem/21049838>

llvm-svn: 241695

1 files changed, 6 insertions, 0 deletions

diff --git a/lldb/test/expression_command/persistent_types/TestPersistentTypes.py b/lldb/test/expression_command/persistent_types/TestPersistentTypes.py
index ab25f4f9ee0..65ab677a339 100644
--- a/lldb/test/expression_command/persistent_types/TestPersistentTypes.py
+++ b/lldb/test/expression_command/persistent_types/TestPersistentTypes.py
@@ -46,6 +46,12 @@ class PersistenttypesTestCase(TestBase):
         self.expect("expression struct { int a; int b; } x = { 2, 3 }; x",
                     substrs = ['a = 2', 'b = 3'])
 
+        self.expect("expression struct { int x; int y; int z; } object; object.y = 1; object.z = 3; object.x = 2; object",
+                    substrs = ['x = 2', 'y = 1', 'z = 3'])
+
+        self.expect("expression struct A { int x; int y; }; struct { struct A a; int z; } object; object.a.y = 1; object.z = 3; object.a.x = 2; object",
+                    substrs = ['x = 2', 'y = 1', 'z = 3'])
+
 
 if __name__ == '__main__':
     import atexit