/in/foo.cc: In function 'int main()':
/in/foo.cc:15:22: warning: 'memset' used with constant zero length parameter; this could be due to transposed parameters [-Wmemset-transposed-args]
  memset(a,sizeof(a),0);
                      ^
/tmp/cc3LGqth.o: In function `_GLOBAL__sub_I_a':
foo.cc:(.text.startup+0x273): relocation truncated to fit: R_X86_64_PC32 against `.bss'
foo.cc:(.text.startup+0x291): relocation truncated to fit: R_X86_64_PC32 against `.bss'
collect2: error: ld returned 1 exit status