Print all functions name and in recursion used in function

Help
1

Is there any way to get what functions (recursively) are called in a given function?
For example, the function parseBlockExpr() from Zig code uses parseBlock(), then expectStatementRecoverable(), then expectStatement(), and it goes back to parseBlockExpr().

2

It sounds like you want a std.debug.captureStackTrace(). You can pass @returnAddress() as the parameter, and you can just put the resulting StackTrace directly into a printer.
This is how e.g. the leak detection check in the debug allocator does it.

3 Likes
3

Works for me.
Example of using std.debug.captureStackTrace():

const std = @import("std");
const stdout = std.io.getStdOut().writer();

var address_buffer: [100]usize = undefined;

var trace1 = std.builtin.StackTrace {
    .instruction_addresses = address_buffer[0..],
    .index = 0,
};

fn f0(val: u8) void {
    std.debug.captureStackTrace(null, &trace1);
    if(val == 0){
        return;
    }
    f1(val - 1);
}

fn f1(val: u8) void {
    if(val == 0){
        return;
    }
    f2(val - 1);
}

fn f2(val: u8) void {
    if(val == 0){
        return;
    }
    f0(val - 1);
}

pub fn main() !void {
    f0(9);
    std.debug.dumpStackTrace(trace1);
}