GNU Grub, minimal BASH-like line editing is supported.For the first word,TAB lists possible command completions.

For a patch/workaround:

A) get the wubildr in https://bugs.edge.launchpad.net/ubuntu/+source/grub2/+bug/477104/comments/90 and copy it over C:\wubildr

using System;
using System.Collections.Generic;
using System.Linq;

unsafe static void Main(string[] args)
{
  char* p = stackalloc char[10];
  char* temp = p;

  foreach (var c in "abcdefg")
  {
    *(temp++) = c;
  }

  *temp = '\0';
  
  var s = new String(p);
}

void* test(void* arg)
{
  printf("%s\n", (char*)arg);
  return (void*)0;
}

int main(int argc, char** argv)
{
  pthread_t tid;
  pthread_create(&tid, NULL, test, "a");

  sleep(3);
  return (EXIT_SUCCESS);
}

#include <sys/resource.h>

void test()
{
  char* s = "abc";
  *s = 'x';
}

int main(int argc, char** argv)
{
  struct rlimit res = { .rlim_cur = RLIM_INFINITY, .rlim_max = RLIM_INFINITY };
  setrlimit(RLIMIT_CORE, &res);

  test();

  return (EXIT_SUCCESS);
}

Objects are structures allocated on the heap. Special rules apply to the use of objects to ensure they are properly garbage-collected. Objects are never allocated statically or on the stack; they must be accessed through special macros and functions only. (Type objects are exceptions to the first rule; the standard types are represented