/tmp/cc9VxiSP.o: in function `caculate(int, int)':
foo.cc:(.text+0x2): relocation truncated to fit: R_X86_64_PC32 against symbol `aim' defined in .bss section in /tmp/cc9VxiSP.o
/tmp/cc9VxiSP.o: in function `main':
foo.cc:(.text.startup+0x5): relocation truncated to fit: R_X86_64_32 against symbol `aim' defined in .bss section in /tmp/cc9VxiSP.o
/tmp/cc9VxiSP.o: in function `_GLOBAL__sub_I_aim':
foo.cc:(.text.startup+0x45): relocation truncated to fit: R_X86_64_32 against `.bss'
foo.cc:(.text.startup+0x54): relocation truncated to fit: R_X86_64_32 against `.bss'
collect2: error: ld returned 1 exit status

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