[rustc.git] / library / std / src / personality / emcc.rs

//! On Emscripten Rust panics are wrapped in C++ exceptions, so we just forward
//! to `__gxx_personality_v0` which is provided by Emscripten.

use crate::ffi::c_int;
use unwind as uw;

// This is required by the compiler to exist (e.g., it's a lang item), but it's
// never actually called by the compiler.  Emscripten EH doesn't use a
// personality function at all, it instead uses __cxa_find_matching_catch.
// Wasm error handling would use __gxx_personality_wasm0.
#[lang = "eh_personality"]
unsafe extern "C" fn rust_eh_personality(
    _version: c_int,
    _actions: uw::_Unwind_Action,
    _exception_class: uw::_Unwind_Exception_Class,
    _exception_object: *mut uw::_Unwind_Exception,
    _context: *mut uw::_Unwind_Context,
) -> uw::_Unwind_Reason_Code {
    core::intrinsics::abort()
}
Commit	Line	Data
f2b60f7d FG	1	//! On Emscripten Rust panics are wrapped in C++ exceptions, so we just forward
	2	//! to `__gxx_personality_v0` which is provided by Emscripten.
	3
9ffffee4	4	use crate::ffi::c_int;
f2b60f7d FG	5	use unwind as uw;
	6
	7	// This is required by the compiler to exist (e.g., it's a lang item), but it's
	8	// never actually called by the compiler. Emscripten EH doesn't use a
	9	// personality function at all, it instead uses __cxa_find_matching_catch.
	10	// Wasm error handling would use __gxx_personality_wasm0.
	11	#[lang = "eh_personality"]
	12	unsafe extern "C" fn rust_eh_personality(
	13	_version: c_int,
	14	_actions: uw::_Unwind_Action,
	15	_exception_class: uw::_Unwind_Exception_Class,
	16	_exception_object: *mut uw::_Unwind_Exception,
	17	_context: *mut uw::_Unwind_Context,
	18	) -> uw::_Unwind_Reason_Code {
	19	core::intrinsics::abort()
	20	}