/tmp/cch8L9Jg.o: In function `readin()':
foo.cc:(.text+0xd5): relocation truncated to fit: R_X86_64_PC32 against symbol `n' defined in .bss section in /tmp/cch8L9Jg.o
foo.cc:(.text+0xea): relocation truncated to fit: R_X86_64_PC32 against symbol `n' defined in .bss section in /tmp/cch8L9Jg.o
foo.cc:(.text+0x121): relocation truncated to fit: R_X86_64_PC32 against symbol `n' defined in .bss section in /tmp/cch8L9Jg.o
/tmp/cch8L9Jg.o: In function `main':
foo.cc:(.text.startup+0xc): relocation truncated to fit: R_X86_64_PC32 against symbol `n' defined in .bss section in /tmp/cch8L9Jg.o
foo.cc:(.text.startup+0xbb): relocation truncated to fit: R_X86_64_PC32 against symbol `n' defined in .bss section in /tmp/cch8L9Jg.o
foo.cc:(.text.startup+0x102): relocation truncated to fit: R_X86_64_PC32 against symbol `n' defined in .bss section in /tmp/cch8L9Jg.o
/tmp/cch8L9Jg.o: In function `_GLOBAL__sub_I_n':
foo.cc:(.text.startup+0x123): relocation truncated to fit: R_X86_64_PC32 against `.bss'
foo.cc:(.text.startup+0x141): relocation truncated to fit: R_X86_64_PC32 against `.bss'
collect2: error: ld returned 1 exit status