enums: make in work without specifying the full type

vlib/builtin/cdefs.v

@@ -1,13 +1,17 @@
-// Copyright (c) 2019 Alexander Medvednikov. All rights reserved.
-// Use of this source code is governed by an MIT license
-// that can be found in the LICENSE file.
-
 module builtin
 
 fn C.memcpy(byteptr, byteptr, int)
 fn C.memmove(byteptr, byteptr, int)
 //fn C.malloc(int) byteptr
-fn C.realloc(byteptr, int) byteptr
+fn C.realloc(a byteptr, b int) byteptr
+
+fn C.qsort(voidptr, int, int, voidptr)
+
+fn C.sprintf(a ...voidptr) byteptr
+
+
+// Windows
+fn C._setmode(int, int)
+fn C._fileno(int) int
 
-//fn C.qsort()
 

vlib/compiler/parser.v

@@ -1264,7 +1264,7 @@ fn (p mut Parser) gen(s string) {
 
 // Generate V header from V source
 fn (p mut Parser) statement(add_semi bool) string {
-	//p.expected_type = ''
+	p.expected_type = ''
 	if p.returns && !p.is_vweb {
 		p.error('unreachable code')
 	}
@@ -1997,11 +1997,10 @@ fn (p mut Parser) get_c_func_type(name string) string {
 	cfn := p.table.find_fn(name) or {
 		// Not Found? Return 'void*'
 		//return 'cvoid' //'void*'
-		//if false {
-		if p.expected_type != '' && p.expected_type != 'void' {
-			p.warn('\ndefine imported C function with ' +
-				'`fn C.$name([args]) [return_type]`\n')
-		}
+		//if p.expected_type != '' && p.expected_type != 'void' {
+			//p.warn('\n e=$p.expected_type define imported C function with ' +
+				//'`fn C.$name([args]) [return_type]`\n')
+		//}
 		return 'void*'
 	}
 	// println("C fn $name has type $cfn.typ")

vlib/compiler/tests/enum_test.v

@@ -25,6 +25,7 @@ fn test_enum() {
 
 fn test_in() {
 	color := Color.red
-	num := 3
+	num := 3 // used to be an expr bug before `in`
 	assert color in [.red, .green]
+	assert num == 3
 }