foo.cc: In function 'int f(int)':
foo.cc:36:1: warning: control reaches end of non-void function [-Wreturn-type]
   36 | }
      | ^
/tmp/cc2WVjCF.o: in function `main':
foo.cc:(.text.startup+0x53): relocation truncated to fit: R_X86_64_32S against symbol `arr' defined in .bss section in /tmp/cc2WVjCF.o
collect2: error: ld returned 1 exit status

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