/in/foo.c: In function 'main':
/in/foo.c:15:15: warning: 's1' is used uninitialized in this function [-Wuninitialized]
  for(int i=0;s[i]!=0;i++)
              ~^~~
/in/foo.c:5:10: note: 's1' was declared here
     char s1[10000];
          ^~
#'target_mem_ref' not supported by expression#'/in/foo.c:15:15: warning:  may be used uninitialized in this function [-Wmaybe-uninitialized]
  for(int i=0;s[i]!=0;i++)
              ~^~~
/in/foo.c:5:10: note: 's1' was declared here
     char s1[10000];
          ^~
/in/foo.c:15:15: warning: 's2' is used uninitialized in this function [-Wuninitialized]
  for(int i=0;s[i]!=0;i++)
              ~^~~
/in/foo.c:7:7: note: 's2' was declared here
  char s2[10000];
       ^~
#'target_mem_ref' not supported by expression#'/in/foo.c:15:15: warning:  may be used uninitialized in this function [-Wmaybe-uninitialized]
  for(int i=0;s[i]!=0;i++)
              ~^~~
/in/foo.c:7:7: note: 's2' was declared here
  char s2[10000];
       ^~