This is due to stream buffering of stdout
. Unless you do fflush(stdout)
or you print a newline "\n"
the output is may be buffered.
In this case, it’s segfaulting before the buffer is flushed and printed.
You can try this instead:
printf("%s",name);
fflush(stdout); // Flush the stream.
name[1]='s'; // Segfault here (undefined behavior)
or:
printf("%s\n",name); // Flush the stream with '\n'
name[1]='s'; // Segfault here (undefined behavior)