pprof-backtrace 0.3.63

A library to acquire a stack trace (backtrace) at runtime in a Rust program. Fork from https://github.com/rust-lang/backtrace-rs/tree/0.3.61.
Documentation 
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//! Empty implementation of unwinding used when no other implementation is
//! appropriate.

use core::ffi::c_void;

#[inline(always)]
pub fn trace(_cb: &mut dyn FnMut(&super::Frame) -> bool) {}

#[derive(Clone)]
pub struct Frame;

impl Frame {
    pub fn ip(&self) -> *mut c_void {
        0 as *mut _
    }

    pub fn sp(&self) -> *mut c_void {
        0 as *mut _
    }

    pub fn symbol_address(&self) -> *mut c_void {
        0 as *mut _
    }

    pub fn module_base_address(&self) -> Option<*mut c_void> {
        None
    }
}