/in/foo.cc: In function 'int main()':
/in/foo.cc:31:2: warning: this 'for' clause does not guard... [-Wmisleading-indentation]
  for (int i=1;i<=n;i++)
  ^~~
/in/foo.cc:38:4: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'for'
    return 0;
    ^~~~~~
/tmp/cczOML6l.o: In function `_GLOBAL__sub_I_a':
foo.cc:(.text.startup+0x163): relocation truncated to fit: R_X86_64_PC32 against `.bss'
foo.cc:(.text.startup+0x181): relocation truncated to fit: R_X86_64_PC32 against `.bss'
collect2: error: ld returned 1 exit status