/in/foo.cc: In function 'void init()':
/in/foo.cc:74:9: warning: unused variable 'p' [-Wunused-variable]
   pnode p,q;
         ^
/in/foo.cc:74:11: warning: unused variable 'q' [-Wunused-variable]
   pnode p,q;
           ^
/tmp/ccrmHN1L.o: In function `init()':
foo.cc:(.text+0x77): relocation truncated to fit: R_X86_64_PC32 against symbol `b' defined in .bss section in /tmp/ccrmHN1L.o
foo.cc:(.text+0x80): relocation truncated to fit: R_X86_64_PC32 against symbol `b' defined in .bss section in /tmp/ccrmHN1L.o
foo.cc:(.text+0x98): relocation truncated to fit: R_X86_64_PC32 against symbol `b' defined in .bss section in /tmp/ccrmHN1L.o
foo.cc:(.text+0xa3): relocation truncated to fit: R_X86_64_PC32 against symbol `b' defined in .bss section in /tmp/ccrmHN1L.o
foo.cc:(.text+0xaa): relocation truncated to fit: R_X86_64_PC32 against symbol `o' defined in .bss section in /tmp/ccrmHN1L.o
foo.cc:(.text+0xe5): relocation truncated to fit: R_X86_64_PC32 against symbol `b' defined in .bss section in /tmp/ccrmHN1L.o
foo.cc:(.text+0x127): relocation truncated to fit: R_X86_64_PC32 against symbol `b' defined in .bss section in /tmp/ccrmHN1L.o
foo.cc:(.text+0x13b): relocation truncated to fit: R_X86_64_PC32 against symbol `o' defined in .bss section in /tmp/ccrmHN1L.o
foo.cc:(.text+0x149): relocation truncated to fit: R_X86_64_PC32 against symbol `b' defined in .bss section in /tmp/ccrmHN1L.o
foo.cc:(.text+0x152): relocation truncated to fit: R_X86_64_PC32 against symbol `end' defined in .bss section in /tmp/ccrmHN1L.o
foo.cc:(.text+0x159): additional relocation overflows omitted from the output
collect2: error: ld returned 1 exit status