Conditional jump or move depends on uninitialised value(s)
   at 0x........: foo (partiallydefinedeq.c:15)
   by 0x........: main (partiallydefinedeq.c:37)

Conditional jump or move depends on uninitialised value(s)
   at 0x........: foo (partiallydefinedeq.c:15)
   by 0x........: main (partiallydefinedeq.c:52)


HEAP SUMMARY:
    in use at exit: ... bytes in ... blocks
  total heap usage: ... allocs, ... frees, ... bytes allocated

For a detailed leak analysis, rerun with: --leak-check=full

For counts of detected and suppressed errors, rerun with: -v
Use --track-origins=yes to see where uninitialised values come from
ERROR SUMMARY: 2 errors from 2 contexts (suppressed: 0 from 0)