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// xfail-stage0 // -*- rust -*- fn f(int a, int b) : lt(a,b) { } pred lt(int a, int b) -> bool { ret a < b; } fn main() { let int a = 10; let int b = 23; let int c = 77; check lt(a,b); check lt(a,c); f(a,b); f(a,c); }