Conditional jump or move depends on uninitialised value(s)
   at 0x........: main (xor-undef-amd64.c:17)

Conditional jump or move depends on uninitialised value(s)
   at 0x........: main (xor-undef-amd64.c:38)

Conditional jump or move depends on uninitialised value(s)
   at 0x........: main (xor-undef-amd64.c:65)

Conditional jump or move depends on uninitialised value(s)
   at 0x........: main (xor-undef-amd64.c:92)

Conditional jump or move depends on uninitialised value(s)
   at 0x........: main (xor-undef-amd64.c:117)