/in/foo.cc: In function 'int main()':
/in/foo.cc:94:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for(int i=0; i<strlen(a_chT); i++)
                  ~^~~~~~~~~~~~~~
/tmp/ccn22cfT.o: In function `init()':
foo.cc:(.text+0x7): relocation truncated to fit: R_X86_64_PC32 against symbol `a_chs' defined in .bss section in /tmp/ccn22cfT.o
/tmp/ccn22cfT.o: In function `main':
foo.cc:(.text.startup+0x5): relocation truncated to fit: R_X86_64_PC32 against symbol `a_chT' defined in .bss section in /tmp/ccn22cfT.o
foo.cc:(.text.startup+0x1e): relocation truncated to fit: R_X86_64_PC32 against symbol `a_chT' defined in .bss section in /tmp/ccn22cfT.o
foo.cc:(.text.startup+0x4b): relocation truncated to fit: R_X86_64_PC32 against symbol `a_chT' defined in .bss section in /tmp/ccn22cfT.o
foo.cc:(.text.startup+0xaf): relocation truncated to fit: R_X86_64_PC32 against symbol `a_chT' defined in .bss section in /tmp/ccn22cfT.o
/tmp/ccn22cfT.o: In function `_GLOBAL__sub_I_a_chT':
foo.cc:(.text.startup+0x113): relocation truncated to fit: R_X86_64_PC32 against `.bss'
foo.cc:(.text.startup+0x131): relocation truncated to fit: R_X86_64_PC32 against `.bss'
collect2: error: ld returned 1 exit status