close #976

tests/concepts/t976.nim

@@ -0,0 +1,32 @@
+import macros
+
+type
+  int1 = distinct int
+  int2 = distinct int
+
+  int1g = concept x
+    x is int1
+
+  int2g = concept x
+    x is int2
+
+proc take[T: int1g](value: int1) =
+  when T is int2:
+    static: error("killed in take(int1)")
+
+proc take[T: int2g](vale: int2) =
+  when T is int1:
+    static: error("killed in take(int2)")
+
+var i1: int1 = 1.int1
+var i2: int2 = 2.int2
+
+take[int1](i1)
+take[int2](i2)
+
+template reject(e) =
+  static: assert(not compiles(e))
+
+reject take[string](i2)
+reject take[int1](i2)
+