Module std::panicking

Implementation of various bits and pieces of the panic! macro and associated runtime pieces.

Specifically, this module contains the implementation of:

• Panic hooks
• Executing a panic up to doing the actual implementation
• Shims around “try”

Modules

• panic_countExperimental

Enums

• Hook 🔒

Statics

• HOOK 🔒

Functions

• __rust_drop_panic 🔒
  This function is called by the panic runtime if FFI code catches a Rust panic but doesn’t rethrow it. We don’t support this case since it messes with our panic count.
• __rust_foreign_exception 🔒
  This function is called by the panic runtime if it catches an exception object which does not correspond to a Rust panic.
• __rust_panic_cleanup 🔒 ^⚠
• __rust_start_panic 🔒 ^⚠
  BoxMeUp lazily performs allocation only when needed (this avoids allocations when using the “abort” panic runtime).
• begin_panicExperimental
  This is the entry point of panicking for the non-format-string variants of panic!() and assert!(). In particular, this is the only entry point that supports arbitrary payloads, not just format strings.
• begin_panic_handler
  Entry point of panics from the core crate (panic_impl lang item).
• default_hook 🔒
• panicking
  Determines whether the current thread is unwinding because of panic.
• rust_panic 🔒
  An unmangled function (through rustc_std_internal_symbol) on which to slap yer breakpoints.
• rust_panic_with_hook 🔒
  Central point for dispatching panics.
• rust_panic_without_hook
  This is the entry point for resume_unwind. It just forwards the payload to the panic runtime.
• update_hookExperimental
  Atomic combination of take_hook and set_hook. Use this to replace the panic handler with a new panic handler that does something and then executes the old handler.
• set_hook
  Registers a custom panic hook, replacing the previously registered hook.
• take_hook
  Unregisters the current panic hook and returns it, registering the default hook in its place.
• try^⚠
  Invoke a closure, capturing the cause of an unwinding panic if one occurs.