/tmp/cckPdaqD.o: In function `main':
foo.cc:(.text.startup+0x7): relocation truncated to fit: R_X86_64_PC32 against symbol `n' defined in .bss section in /tmp/cckPdaqD.o
foo.cc:(.text.startup+0x1f): relocation truncated to fit: R_X86_64_PC32 against symbol `n' defined in .bss section in /tmp/cckPdaqD.o
foo.cc:(.text.startup+0x2e): relocation truncated to fit: R_X86_64_PC32 against symbol `a' defined in .bss section in /tmp/cckPdaqD.o
foo.cc:(.text.startup+0x60): relocation truncated to fit: R_X86_64_PC32 against symbol `n' defined in .bss section in /tmp/cckPdaqD.o
foo.cc:(.text.startup+0x73): relocation truncated to fit: R_X86_64_PC32 against symbol `a' defined in .bss section in /tmp/cckPdaqD.o
/tmp/cckPdaqD.o: In function `_GLOBAL__sub_I_n':
foo.cc:(.text.startup+0xc3): relocation truncated to fit: R_X86_64_PC32 against `.bss'
foo.cc:(.text.startup+0xe1): relocation truncated to fit: R_X86_64_PC32 against `.bss'
collect2: error: ld returned 1 exit status