singleton_test.m:013: In function `my_append_func'/2:
singleton_test.m:013:   warning: unresolved polymorphism.
singleton_test.m:013:   The variables with unbound types were:
singleton_test.m:013:     L2: V_1
singleton_test.m:013:     L1: V_1
singleton_test.m:013:   The unbound type variables will be implicitly bound to
singleton_test.m:013:   the builtin type `void'.
singleton_test.m:031: In clause for predicate `my_append'/3:
singleton_test.m:031:   warning: variable `L2' occurs only once in this scope.
singleton_test.m:035: In clause for function `my_append_func'/2:
singleton_test.m:035:   warning: variables `L1, L2' occur only once in this
singleton_test.m:035:   scope.
singleton_test.m:036: In clause for function `my_append_func'/2:
singleton_test.m:036:   warning: variable `T' occurs only once in this scope.
singleton_test.m:038: In the C code for predicate `my_c_pred'/3:
singleton_test.m:038:   warning: variable `Y' does not occur in the C code.
singleton_test.m:051: In the C code for function `my_c_func'/2:
singleton_test.m:051:   warning: variable `X' does not occur in the C code.
singleton_test.m:066: In the C code for predicate `c_hello_world'/3:
singleton_test.m:066:   warning: variable `Msg' does not occur in the C code.
singleton_test.m:082: In clause for predicate `test_head'/6:
singleton_test.m:082:   warning: variable `_D' occurs more than once in this
singleton_test.m:082:   scope.
singleton_test.m:082: In clause for predicate `test_head'/6:
singleton_test.m:082:   warning: variables `A, B' occur only once in this
singleton_test.m:082:   scope.
For more information, recompile with `-E'.