fixes #1717, fixes #2324

compiler/ccgcalls.nim

@@ -198,6 +198,7 @@ proc genClosureCall(p: BProc, le, ri: PNode, d: var TLoc) =
   var length = sonsLen(ri)
   for i in countup(1, length - 1):
     assert(sonsLen(typ) == sonsLen(typ.n))
+    if ri.sons[i].typ.isCompileTimeOnly: continue
     if i < sonsLen(typ):
       assert(typ.n.sons[i].kind == nkSym)
       app(pl, genArg(p, ri.sons[i], typ.n.sons[i].sym, ri))
@@ -240,7 +241,9 @@ proc genClosureCall(p: BProc, le, ri: PNode, d: var TLoc) =
     genCallPattern()
 
 proc genOtherArg(p: BProc; ri: PNode; i: int; typ: PType): PRope =
-  if i < sonsLen(typ):
+  if ri.sons[i].typ.isCompileTimeOnly:
+    result = nil
+  elif i < sonsLen(typ):
     # 'var T' is 'T&' in C++. This means we ignore the request of
     # any nkHiddenAddr when it's a 'var T'.
     assert(typ.n.sons[i].kind == nkSym)

tests/cpp/tstaticvar_via_typedesc.nim

@@ -0,0 +1,20 @@
+discard """
+  cmd: "nim cpp $file"
+  output: "42"
+"""
+
+# bug #2324
+
+static: assert defined(cpp), "compile in cpp mode"
+
+{.emit: """
+class Foo {
+public:
+    static int x;
+};
+int Foo::x = 42;
+""".}
+
+type Foo {.importcpp:"Foo".} = object
+proc x* (this: typedesc[Foo]): int {.importcpp:"Foo::x@", nodecl.}
+echo Foo.x