/tmp/ccePBKtd.o: In function `main':
foo.cc:(.text.startup+0x7): relocation truncated to fit: R_X86_64_PC32 against symbol `a' defined in .bss section in /tmp/ccePBKtd.o
foo.cc:(.text.startup+0x1e): relocation truncated to fit: R_X86_64_PC32 against symbol `a' defined in .bss section in /tmp/ccePBKtd.o
foo.cc:(.text.startup+0xca): relocation truncated to fit: R_X86_64_PC32 against symbol `a' defined in .bss section in /tmp/ccePBKtd.o
foo.cc:(.text.startup+0xf7): relocation truncated to fit: R_X86_64_PC32 against symbol `a' defined in .bss section in /tmp/ccePBKtd.o
foo.cc:(.text.startup+0x12d): relocation truncated to fit: R_X86_64_PC32 against symbol `a' defined in .bss section in /tmp/ccePBKtd.o
foo.cc:(.text.startup+0x134): relocation truncated to fit: R_X86_64_PC32 against symbol `a' defined in .bss section in /tmp/ccePBKtd.o
foo.cc:(.text.startup+0x13b): relocation truncated to fit: R_X86_64_PC32 against symbol `a' defined in .bss section in /tmp/ccePBKtd.o
foo.cc:(.text.startup+0x169): relocation truncated to fit: R_X86_64_PC32 against symbol `a' defined in .bss section in /tmp/ccePBKtd.o
foo.cc:(.text.startup+0x224): relocation truncated to fit: R_X86_64_PC32 against symbol `a' defined in .bss section in /tmp/ccePBKtd.o
foo.cc:(.text.startup+0x42b): relocation truncated to fit: R_X86_64_PC32 against symbol `a' defined in .bss section in /tmp/ccePBKtd.o
collect2: error: ld returned 1 exit status