prog.c: In function ‘main’:
prog.c:6:8: error: assignment makes integer from pointer without a cast [-Werror=int-conversion]
v1 = v;
^
prog.c:7:14: error: format ‘%s’ expects argument of type ‘char *’, but argument 2 has type ‘int’ [-Werror=format=]
printf("%s", v1);
^
cc1: all warnings being treated as errors