[Lldb-commits] [PATCH] D103483: [lldb] Convert the default constructor’s member initializers into default member initializers

Shafik Yaghmour via Phabricator via lldb-commits lldb-commits at lists.llvm.org
Wed Jun 2 14:45:20 PDT 2021

shafik added a comment.

Thank you for doing this! This will be a big improvement.

I am not done going through this change but I think it will require a bit more careful look though to make sure we are getting the maximum benefit from this refactor.

Comment at: lldb/include/lldb/Utility/VMRange.h:29
-  VMRange() : m_base_addr(0), m_byte_size(0) {}
+  VMRange()  {}
`= default`

Comment at: lldb/source/API/SBBroadcaster.cpp:19
-SBBroadcaster::SBBroadcaster() : m_opaque_sp(), m_opaque_ptr(nullptr) {
+SBBroadcaster::SBBroadcaster() : m_opaque_sp() {
We don't need `m_opaque_sp()` this is a `std::shared_ptr` the default constructor will do the right thing.

Comment at: lldb/source/API/SBBroadcaster.cpp:24
 SBBroadcaster::SBBroadcaster(const char *name)
     : m_opaque_sp(new Broadcaster(nullptr, name)), m_opaque_ptr(nullptr) {
   LLDB_RECORD_CONSTRUCTOR(SBBroadcaster, (const char *), name);
We don't need `m_opaque_ptr(nullptr)`

Comment at: lldb/source/API/SBCommandReturnObject.cpp:25
-      : m_ptr(new CommandReturnObject(false)), m_owned(true) {}
+      : m_ptr(new CommandReturnObject(false)) {}
   SBCommandReturnObjectImpl(CommandReturnObject &ref)
We can remove ` m_ptr(new CommandReturnObject(false))` and use `=default`

Comment at: lldb/source/API/SBCommandReturnObject.cpp:44
   CommandReturnObject *m_ptr;
+  bool m_owned = true;
`CommandReturnObject *m_ptr = new CommandReturnObject(false)`

Note, this is ok w/ the other constructors b/c [class.base.init/p10](http://eel.is/c++draft/class.base.init#10) tell us

> If a given non-static data member has both a default member initializer and a mem-initializer, the initialization specified by the mem-initializer is performed, and the non- static data member's default member initializer is ignored.



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