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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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10
Userland/Tests/LibC/accuracy-strtod.cpp
View file

@ -263,11 +263,11 @@ static long long cast_ll(double d)
long long as_ll;
};
typedef char assert_double_8bytes[sizeof(double) == 8 ? 1 : -1];
(void)sizeof(assert_double_8bytes);
[[maybe_unused]] auto double_size = sizeof(assert_double_8bytes);
typedef char assert_ll_8bytes[sizeof(long long) == 8 ? 1 : -1];
(void)sizeof(assert_ll_8bytes);
[[maybe_unused]] auto longlong_size = sizeof(assert_ll_8bytes);
typedef char assert_readable_8bytes[sizeof(readable_t) == 8 ? 1 : -1];
(void)sizeof(assert_readable_8bytes);
[[maybe_unused]] auto readable8_size = sizeof(assert_readable_8bytes);
readable_t readable;
readable.as_double = d;
return readable.as_ll;
@ -280,9 +280,9 @@ static bool is_strtod_close(strtod_fn_t strtod_fn, const char* test_string, cons
unsigned char as_bytes[8];
};
typedef char assert_double_8bytes[sizeof(double) == 8 ? 1 : -1];
(void)sizeof(assert_double_8bytes);
[[maybe_unused]] auto double_size = sizeof(assert_double_8bytes);
typedef char assert_readable_8bytes[sizeof(readable_t) == 8 ? 1 : -1];
(void)sizeof(assert_readable_8bytes);
[[maybe_unused]] auto readable8_size = sizeof(assert_readable_8bytes);
readable_t readable;
char* endptr = (char*)0x123;