vcl: avoid -Werror=deprecated-copy (GCC trunk towards GCC 9)

...by explicitly defaulting the copy/move functions (and, where needed in turn,
also a default ctor) for classes that have a user-declared dtor that does
nothing other than an implicitly-defined one would do, but needs to be user-
declared because it is virtual and potentially serves as a key function to
emit the vtable, or is non-public, etc.; and by removing explicitly user-
provided functions that do the same as their implicitly-defined counterparts,
but may prevent implicitly declared copy functions from being defined as non-
deleted in the future.  (Even if such a user-provided function was declared
non-inline in an include file, the apparently-used implicitly-defined copy
functions are already include, so why bother with non-inline functions.)

Change-Id: Ife5d8eb699b8b6c84b9229ae275dc386fa189bce
Reviewed-on: https://gerrit.libreoffice.org/58105
Tested-by: Jenkins
Reviewed-by: Stephan Bergmann <sbergman@redhat.com>

1 files changed, 5 insertions, 0 deletions

diff --git a/include/vcl/customweld.hxx b/include/vcl/customweld.hxx
index c191b91ebf2b..f6770c8fe4a4 100644
--- a/include/vcl/customweld.hxx
+++ b/include/vcl/customweld.hxx
@@ -73,6 +73,11 @@ public:
     {
     }
     virtual ~CustomWidgetController();
+
+    CustomWidgetController(CustomWidgetController const&) = default;
+    CustomWidgetController(CustomWidgetController&&) = default;
+    CustomWidgetController& operator=(CustomWidgetController const&) = default;
+    CustomWidgetController& operator=(CustomWidgetController&&) = default;
 };
 
 class VCL_DLLPUBLIC CustomWeld