/tmp/cclEWDW3.o: in function `main':
foo.cc:(.text.startup+0x5): relocation truncated to fit: R_X86_64_PC32 against symbol `n' defined in .bss section in /tmp/cclEWDW3.o
foo.cc:(.text.startup+0x23): relocation truncated to fit: R_X86_64_PC32 against symbol `k' defined in .bss section in /tmp/cclEWDW3.o
foo.cc:(.text.startup+0x31): relocation truncated to fit: R_X86_64_PC32 against symbol `n' defined in .bss section in /tmp/cclEWDW3.o
foo.cc:(.text.startup+0x70): relocation truncated to fit: R_X86_64_PC32 against symbol `n' defined in .bss section in /tmp/cclEWDW3.o
foo.cc:(.text.startup+0x7b): relocation truncated to fit: R_X86_64_PC32 against symbol `k' defined in .bss section in /tmp/cclEWDW3.o
foo.cc:(.text.startup+0x123): relocation truncated to fit: R_X86_64_PC32 against symbol `k' defined in .bss section in /tmp/cclEWDW3.o
/tmp/cclEWDW3.o: in function `_GLOBAL__sub_I_k':
foo.cc:(.text.startup+0x134): relocation truncated to fit: R_X86_64_PC32 against `.bss'
collect2: error: ld returned 1 exit status