Read-Only Memory (code example)

The following code will cause a SEGV signal in instruction '1':

 int main()
 {
     const char* s = "hello world";

     char* p = (char*)s;
     p[0] = 'a';    /* '1' */

     return 0;
 }

The following code won't crush (but is still written with bad style):

 #include <string.h>  /* for 'strdup()' */

 int main()
 {
     const char* s = strdup("hello world");

     char* p = (char*)s;
     p[0] = 'a';

     return 0;
 }