pub enum InstrumentCoverage {
    All,
    Branch,
    ExceptUnusedGenerics,
    ExceptUnusedFunctions,
    Off,
}
Expand description

The different settings that the -C instrument-coverage flag can have.

Coverage instrumentation now supports combining -C instrument-coverage with compiler and linker optimization (enabled with -O or -C opt-level=1 and higher). Nevertheless, there are many variables, depending on options selected, code structure, and enabled attributes. If errors are encountered, either while compiling or when generating llvm-cov show reports, consider lowering the optimization level, including or excluding -C link-dead-code, or using -Zunstable-options -C instrument-coverage=except-unused-functions or -Zunstable-options -C instrument-coverage=except-unused-generics.

Note that ExceptUnusedFunctions means: When mapgen.rs generates the coverage map, it will not attempt to generate synthetic functions for unused (and not code-generated) functions (whether they are generic or not). As a result, non-codegenned functions will not be included in the coverage map, and will not appear, as covered or uncovered, in coverage reports.

ExceptUnusedGenerics will add synthetic functions to the coverage map, unless the function has type parameters.

Variants§

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All

Default -C instrument-coverage or -C instrument-coverage=statement

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Branch

Additionally, instrument branches and output branch coverage. -Zunstable-options -C instrument-coverage=branch

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ExceptUnusedGenerics

-Zunstable-options -C instrument-coverage=except-unused-generics

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ExceptUnusedFunctions

-Zunstable-options -C instrument-coverage=except-unused-functions

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Off

-C instrument-coverage=off (or no, etc.)

Trait Implementations§

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impl Clone for InstrumentCoverage

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fn clone(&self) -> InstrumentCoverage

Returns a copy of the value. Read more
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fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl Debug for InstrumentCoverage

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fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter. Read more
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impl DepTrackingHash for InstrumentCoverage

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fn hash( &self, hasher: &mut DefaultHasher, _: ErrorOutputType, _for_crate_hash: bool )

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impl Hash for InstrumentCoverage

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fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher. Read more
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fn hash_slice<H>(data: &[Self], state: &mut H)
where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher. Read more
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impl PartialEq for InstrumentCoverage

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fn eq(&self, other: &InstrumentCoverage) -> bool

This method tests for self and other values to be equal, and is used by ==.
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fn ne(&self, other: &Rhs) -> bool

This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.
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impl Copy for InstrumentCoverage

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impl StructuralPartialEq for InstrumentCoverage

Auto Trait Implementations§

Blanket Implementations§

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impl<T> Any for T
where T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<T> Borrow<T> for T
where T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for T
where T: ?Sized,

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fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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impl<T, U> Into<U> for T
where U: From<T>,

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fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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impl<T> ToOwned for T
where T: Clone,

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type Owned = T

The resulting type after obtaining ownership.
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fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more
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fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more
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impl<T, U> TryFrom<U> for T
where U: Into<T>,

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type Error = Infallible

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

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type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.

Layout§

Note: Most layout information is completely unstable and may even differ between compilations. The only exception is types with certain repr(...) attributes. Please see the Rust Reference's “Type Layout” chapter for details on type layout guarantees.

Size: 1 byte

Size for each variant:

  • All: 0 bytes
  • Branch: 0 bytes
  • ExceptUnusedGenerics: 0 bytes
  • ExceptUnusedFunctions: 0 bytes
  • Off: 0 bytes