# Two overloads with different pair parameters when called with a
# `null` directly leads to ambiguity.

# Output:
# #semantic_error# 

# Exit:
# 200

# Program:

begin
  int f(pair(int, char) x) is
    return 1
  end

  int f(pair(int, bool) x) is
    return 2
  end

  int result = call f(null) ;
  println result
end