fix #1017; fix #3309

compiler/semcall.nim

@@ -446,7 +446,8 @@ proc explicitGenericSym(c: PContext, n: PNode, s: PSym): PNode =
 proc explicitGenericInstantiation(c: PContext, n: PNode, s: PSym): PNode =
   assert n.kind == nkBracketExpr
   for i in 1..sonsLen(n)-1:
-    n.sons[i].typ = semTypeNode(c, n.sons[i], nil)
+    let e = semExpr(c, n.sons[i])
+    n.sons[i].typ = e.typ.skipTypes({tyTypeDesc})
   var s = s
   var a = n.sons[0]
   if a.kind == nkSym:

compiler/sigmatch.nim

@@ -1578,6 +1578,12 @@ proc typeRelImpl(c: var TCandidate, f, aOrig: PType,
           if not exprStructuralEquivalent(f.n, aOrig.n):
             result = isNone
         if result != isNone: put(c, f, aOrig)
+      elif aOrig.n != nil:
+        result = typeRel(c, f.lastSon, aOrig.n.typ)
+        if result != isNone:
+          var boundType = newTypeWithSons(c.c, tyStatic, @[aOrig.n.typ])
+          boundType.n = aOrig.n
+          put(c, f, boundType)
       else:
         result = isNone
     elif prev.kind == tyStatic:

tests/statictypes/texplicitprocparams.nim

@@ -0,0 +1,19 @@
+discard """
+output: '''
+(x: 100)
+5
+'''
+"""
+
+type
+  OdArray*[As: static[int], T] = object
+    x: int
+
+proc initOdArray*[As: static[int], T](len: int): OdArray[As, T] =
+  result.l = len
+
+echo initOdArray[10, int](100)
+
+proc doStatic[N: static[int]](): int = N
+echo doStatic[5]()
+