Backtrace in std::backtrace - Rust
Description: A captured OS thread stack backtrace.

## Backtrace

# Struct Backtrace

1.65.0 · Source

    pub struct Backtrace { /* private fields */ }

Expand description

A captured OS thread stack backtrace.

This type represents a stack backtrace for an OS thread captured at a previous point in time. In some instances the `Backtrace` type may internally be empty due to configuration. For more information see `Backtrace::capture`.

## Implementations§

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### impl Backtrace

1.65.0 · Source

#### pub fn capture() -> Backtrace

Captures a stack backtrace of the current thread.

This function will capture a stack backtrace of the current OS thread of execution, returning a `Backtrace` type which can be later used to print the entire stack trace or render it to a string.

This function will be a noop if the `RUST_BACKTRACE` or `RUST_LIB_BACKTRACE` backtrace variables are both not set. If either environment variable is set and enabled then this function will actually capture a backtrace. Capturing a backtrace can be both memory intensive and slow, so these environment variables allow liberally using `Backtrace::capture` and only incurring a slowdown when the environment variables are set.

To forcibly capture a backtrace regardless of environment variables, use the `Backtrace::force_capture` function.

1.65.0 · Source

#### pub fn force_capture() -> Backtrace

Forcibly captures a full backtrace, regardless of environment variable configuration.

This function behaves the same as `capture` except that it ignores the values of the `RUST_BACKTRACE` and `RUST_LIB_BACKTRACE` environment variables, always capturing a backtrace.

Note that capturing a backtrace can be an expensive operation on some platforms, so this should be used with caution in performance-sensitive parts of code.

1.65.0 (const: 1.65.0) · Source

#### pub const fn disabled() -> Backtrace

Forcibly captures a disabled backtrace, regardless of environment variable configuration.

1.65.0 · Source

#### pub fn status(&self) -> BacktraceStatus

Returns the status of this backtrace, indicating whether this backtrace request was unsupported, disabled, or a stack trace was actually captured.

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### impl<'a> Backtrace

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#### pub fn frames(&'a self) -> &'a [BacktraceFrame]

🔬This is a nightly-only experimental API. (`backtrace_frames` #79676)

Returns an iterator over the backtrace frames.

## Trait Implementations§

1.65.0 · Source§

### impl Debug for Backtrace

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

Formats the value using the given formatter. Read more
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### impl Display for Backtrace

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

Formats the value using the given formatter. Read more

## Auto Trait Implementations§

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### impl !Freeze for Backtrace

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### impl RefUnwindSafe for Backtrace

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### impl Send for Backtrace

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### impl Sync for Backtrace

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### impl Unpin for Backtrace

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### impl UnwindSafe for Backtrace

## 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> ToString for T
where T: Display + ?Sized,

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#### fn to_string(&self) -> String

Converts the given value to a `String`. 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.