How to create a process without environment variables

This is how you may create a process with no initial environment variables.

% cat env-less-bash.c
    #include <unistd.h>

    int
    main(int argc __attribute__((unused)), char** argv)
    {
        char* envp[] = {0};
        return execve("/usr/bin/bash", argv, envp);
    }

% gcc -Wall -Wextra -ggdb -o env-less-bash env-less-bash.c

% env | wc -l
    50

% ./env-less-bash
    [raitis@hostname l]$ env
        PWD=/home/s/code/c/l
        SHLVL=1
        _=/usr/bin/env