/tmp/ccoQJP0r.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/ccoQJP0r.o
foo.cc:(.text.startup+0x1a): relocation truncated to fit: R_X86_64_PC32 against symbol `k' defined in .bss section in /tmp/ccoQJP0r.o
foo.cc:(.text.startup+0x29): relocation truncated to fit: R_X86_64_PC32 against symbol `n' defined in .bss section in /tmp/ccoQJP0r.o
foo.cc:(.text.startup+0x3e): relocation truncated to fit: R_X86_64_PC32 against symbol `f' defined in .bss section in /tmp/ccoQJP0r.o
foo.cc:(.text.startup+0x62): relocation truncated to fit: R_X86_64_PC32 against symbol `f' defined in .bss section in /tmp/ccoQJP0r.o
foo.cc:(.text.startup+0x69): relocation truncated to fit: R_X86_64_PC32 against symbol `k' defined in .bss section in /tmp/ccoQJP0r.o
foo.cc:(.text.startup+0x77): relocation truncated to fit: R_X86_64_PC32 against symbol `n' defined in .bss section in /tmp/ccoQJP0r.o
/tmp/ccoQJP0r.o: In function `_GLOBAL__sub_I_k':
foo.cc:(.text.startup+0x113): relocation truncated to fit: R_X86_64_PC32 against `.bss'
foo.cc:(.text.startup+0x131): relocation truncated to fit: R_X86_64_PC32 against `.bss'
collect2: error: ld returned 1 exit status