forked from mirrors/gecko-dev
767a63976f
Depends on D63952 Differential Revision: https://phabricator.services.mozilla.com/D63955 --HG-- extra : moz-landing-system : lando
32 lines
1 KiB
Rust
32 lines
1 KiB
Rust
/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this file,
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* You can obtain one at http://mozilla.org/MPL/2.0/. */
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extern crate rustc_demangle;
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use rustc_demangle::demangle;
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use std::ffi::{CStr, CString};
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use std::ptr;
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/// Demangle `name` as a Rust symbol.
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///
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/// The resulting pointer should be freed with `free_demangled_name`.
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#[no_mangle]
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pub extern "C" fn rust_demangle(name: *const std::os::raw::c_char) -> *mut std::os::raw::c_char {
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let demangled = format!(
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"{:#}",
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demangle(&unsafe { CStr::from_ptr(name) }.to_string_lossy())
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);
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CString::new(demangled)
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.map(|s| s.into_raw())
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.unwrap_or(ptr::null_mut())
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}
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/// Free a string that was returned from `rust_demangle`.
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#[no_mangle]
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pub extern "C" fn free_rust_demangled_name(demangled: *mut std::os::raw::c_char) {
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if demangled != ptr::null_mut() {
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// Just take ownership here.
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unsafe { CString::from_raw(demangled) };
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}
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}
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