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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
Signed by: github
GPG key ID: 4AEE18F83AFDEB23
Notes: sideshowbarker 2024-07-19 00:43:22 +09:00
103 changed files with 219 additions and 362 deletions
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6
Kernel/FileSystem/Plan9FileSystem.cpp
View file

@ -710,7 +710,7 @@ Plan9FSInode::~Plan9FSInode()
Plan9FS::Message clunk_request { fs(), Plan9FS::Message::Type::Tclunk };
clunk_request << fid();
// FIXME: Should we observe this error somehow?
(void)fs().post_message_and_explicitly_ignore_reply(clunk_request);
[[maybe_unused]] auto rc = fs().post_message_and_explicitly_ignore_reply(clunk_request);
}
KResult Plan9FSInode::ensure_open_for_mode(int mode)
@ -909,7 +909,7 @@ KResult Plan9FSInode::traverse_as_directory(Function<bool(const FS::DirectoryEnt
Plan9FS::Message close_message { fs(), Plan9FS::Message::Type::Tclunk };
close_message << clone_fid;
// FIXME: Should we observe this error?
(void)fs().post_message_and_explicitly_ignore_reply(close_message);
[[maybe_unused]] auto rc = fs().post_message_and_explicitly_ignore_reply(close_message);
return result;
}
}
@ -942,7 +942,7 @@ KResult Plan9FSInode::traverse_as_directory(Function<bool(const FS::DirectoryEnt
Plan9FS::Message close_message { fs(), Plan9FS::Message::Type::Tclunk };
close_message << clone_fid;
// FIXME: Should we observe this error?
(void)fs().post_message_and_explicitly_ignore_reply(close_message);
[[maybe_unused]] auto rc = fs().post_message_and_explicitly_ignore_reply(close_message);
return result;
} else {
// TODO