Error Identifiers: function.*

There are 16 error identifiers in the function.* group:

Type-checking function call is redundant because the type is already narrowed.
Called function is marked as deprecated.
Function is declared multiple times.
Type-checking function call will always evaluate to false.
Named function is declared inside another function.
Called function is marked as internal and not part of the public API.
Unnecessary (void) cast on a function that does not require its return value to be used.
Function is called with incorrect letter casing.
Called function does not exist or cannot be found.
Return value of a #[NoDiscard] function is not used.
Return value of a pure function call is not used.
Function call is missing the strict comparison parameter.
Return type of a function call contains an unresolvable type after template substitution.
Return value of a function like print_r() is useless without the return parameter.
Variance annotation on a function template type is not meaningful.
Return value of a void function is being used.