cxx/symbols/
exception.rs

1#![cfg(feature = "alloc")]
2
3use crate::result::PtrLen;
4use alloc::boxed::Box;
5use alloc::string::String;
6use core::ptr::NonNull;
7use core::slice;
8
9#[export_name = "cxxbridge1$exception"]
10unsafe extern "C" fn exception(ptr: *const u8, len: usize) -> PtrLen {
11    let slice = unsafe { slice::from_raw_parts(ptr, len) };
12    let string = String::from_utf8_lossy(slice);
13    let len = string.len();
14    let raw_str = Box::into_raw(string.into_owned().into_boxed_str());
15    let raw_u8 = raw_str.cast::<u8>();
16    let nonnull = unsafe { NonNull::new_unchecked(raw_u8) };
17    PtrLen { ptr: nonnull, len }
18}