fix nim-lang#10833 type expected error for proc resolution with stati…

…c[int]

compiler/semcall.nim

@@ -641,7 +641,7 @@ proc explicitGenericInstError(c: PContext; n: PNode): PNode =
 proc explicitGenericSym(c: PContext, n: PNode, s: PSym): PNode =
   # binding has to stay 'nil' for this to work!
   var m = newCandidate(c, s, nil)
-
+  inc c.inExplicitGenericSym
   for i in 1..<n.len:
     let formal = s.ast[genericParamsPos][i-1].typ
     var arg = n[i].typ
@@ -660,6 +660,7 @@ proc explicitGenericSym(c: PContext, n: PNode, s: PSym): PNode =
   let info = getCallLineInfo(n)
   markUsed(c, info, s)
   onUse(info, s)
+  dec c.inExplicitGenericSym
   result = newSymNode(newInst, info)
 
 proc explicitGenericInstantiation(c: PContext, n: PNode, s: PSym): PNode =

compiler/semdata.nim

@@ -118,6 +118,7 @@ type
     compilesContextId*: int    # > 0 if we are in a ``compiles`` magic
     compilesContextIdGenerator*: int
     inGenericInst*: int        # > 0 if we are instantiating a generic
+    inExplicitGenericSym*: int
     converters*: seq[PSym]
     patterns*: seq[PSym]       # sequence of pattern matchers
     optionStack*: seq[POptionEntry]

compiler/semexprs.nim

@@ -1293,7 +1293,8 @@ proc semSym(c: PContext, n: PNode, sym: PSym, flags: TExprFlags): PNode =
       if s.astdef.safeLen == 0: result = inlineConst(c, n, s)
       else: result = newSymNode(s, n.info)
     of tyStatic:
-      if typ.n != nil:
+      let staticDuringGenericInst = (c.inStaticContext > 0 and c.inGenericInst > 0)
+      if (c.inExplicitGenericSym <= 0 or staticDuringGenericInst) and typ.n != nil:
         result = typ.n
         result.typ = typ.base
       else:

tests/generics/t10833.nim

@@ -0,0 +1,16 @@
+type Foo*[A; B; C: static[int]] = object
+  s: string
+#   d: typeof(C)
+
+proc build*[A; B; C: static[int]](s: string;): Foo[A, B, C] =
+  const d = C
+  result.s = s
+
+proc build*[A; B; C: static[int]](): Foo[A, B, C] =
+  build[A, B, C]("foo")
+
+type
+  Bar = object
+  Baz = object
+let r = build[Bar, Baz, 1]()
+doAssert r.s == "foo"