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Everywhere: Switch from (void) to [[maybe_unused]] (#4473)

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Problem:
- `(void)` simply casts the expression to void. This is understood to
  indicate that it is ignored, but this is really a compiler trick to
  get the compiler to not generate a warning.

Solution:
- Use the `[[maybe_unused]]` attribute to indicate the value is unused.

Note:
- Functions taking a `(void)` argument list have also been changed to
  `()` because this is not needed and shows up in the same grep
  command.
This commit is contained in:
Lenny Maiorani 2020-12-20 16:09:48 -07:00 • committed by GitHub
parent 4421d98e30
commit 765936ebae
No known key found for this signature in database
GPG key ID: 4AEE18F83AFDEB23
103 changed files with 219 additions and 362 deletions
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6
Libraries/LibWeb/TreeNode.h
View file

@ -359,7 +359,7 @@ inline void TreeNode<T>::append_child(NonnullRefPtr<T> node, bool notify)
m_first_child = m_last_child;
if (notify)
node->inserted_into(static_cast<T&>(*this));
(void)node.leak_ref();
[[maybe_unused]] auto& rc = node.leak_ref();
if (notify)
static_cast<T*>(this)->children_changed();
@ -394,7 +394,7 @@ inline void TreeNode<T>::insert_before(NonnullRefPtr<T> node, RefPtr<T> child, b
node->m_parent = static_cast<T*>(this);
if (notify)
node->inserted_into(static_cast<T&>(*this));
(void)node.leak_ref();
[[maybe_unused]] auto& rc = node.leak_ref();
if (notify)
static_cast<T*>(this)->children_changed();
@ -416,7 +416,7 @@ inline void TreeNode<T>::prepend_child(NonnullRefPtr<T> node)
if (!m_last_child)
m_last_child = m_first_child;
node->inserted_into(static_cast<T&>(*this));
(void)node.leak_ref();
[[maybe_unused]] auto& rc = node.leak_ref();
static_cast<T*>(this)->children_changed();
}