#include <string.h>

#include <stdio.h>

#include <stdlib.h>

void foo (char *bar)

{

  float my_float = 10.5;    // in hex: \x41\x28\x00\x00

  char  buffer[28];        

  printf("my float value = %f\n", my_float);

  strcpy(buffer, bar);  

  printf("my float value = %f\n", my_float);

}

int main (int argc, char **argv)

{

  foo("my string is too long !!!!! ");                  // all is normal

  //foo("my string is too long !!!!! \x10\x10\xc0\x42");  // overwrites my_float

  return 0;

}