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

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
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GPG key ID: 4AEE18F83AFDEB23
103 changed files with 219 additions and 362 deletions

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@ -150,7 +150,7 @@ void E1000NetworkAdapter::detect()
if (id != qemu_bochs_vbox_id)
return;
u8 irq = PCI::get_interrupt_line(address);
(void)adopt(*new E1000NetworkAdapter(address, irq)).leak_ref();
[[maybe_unused]] auto& unused = adopt(*new E1000NetworkAdapter(address, irq)).leak_ref();
});
}