From 2002d202496fedddcc31eab22acce7aeab013f43 Mon Sep 17 00:00:00 2001
From: Delyan Angelov <delian66@gmail.com>
Date: Wed, 17 Feb 2021 01:37:05 +0200
Subject: [PATCH] io: remove unused Zzz_CoerceInterfaceTableGeneration struct;
 add test for `x := Enum{}`

---
 vlib/io/readerwriter.v   | 18 +-----------------
 vlib/v/gen/c/cgen.v      |  6 ++----
 vlib/v/tests/enum_test.v | 17 ++++++++++++++++-
 3 files changed, 19 insertions(+), 22 deletions(-)

diff --git a/vlib/io/readerwriter.v b/vlib/io/readerwriter.v
index 8c0dfa5fb1..b285f71111 100644
--- a/vlib/io/readerwriter.v
+++ b/vlib/io/readerwriter.v
@@ -4,7 +4,7 @@ module io
 pub interface ReaderWriter {
 	// from Reader
 	read(mut buf []byte) ?int
-		// from Writer
+	// from Writer
 	write(buf []byte) ?int
 }
 
@@ -31,19 +31,3 @@ pub fn make_readerwriter(r Reader, w Writer) ReaderWriterImpl {
 		w: w
 	}
 }
-
-struct Zzz_CoerceInterfaceTableGeneration {
-}
-
-fn (_ Zzz_CoerceInterfaceTableGeneration) write(buf []byte) ?int {
-	return none
-}
-
-fn (_ Zzz_CoerceInterfaceTableGeneration) read(mut buf []byte) ?int {
-	return none
-}
-
-fn zzz_reader_writer_coerce_compiler() {
-	x := Zzz_CoerceInterfaceTableGeneration{}
-	_ := make_readerwriter(x, x)
-}
diff --git a/vlib/v/gen/c/cgen.v b/vlib/v/gen/c/cgen.v
index 55d06b37fc..4b3541151a 100644
--- a/vlib/v/gen/c/cgen.v
+++ b/vlib/v/gen/c/cgen.v
@@ -5037,10 +5037,8 @@ fn (mut g Gen) struct_init(struct_init ast.StructInit) {
 		g.indent--
 	}
 
-	if g.pref.ccompiler == 'msvc' {
-		if !initialized {
-			g.write('\n#ifndef __cplusplus\n0\n#endif\n')
-		}
+	if !initialized {
+		g.write('\n#ifndef __cplusplus\n0\n#endif\n')
 	}
 
 	g.write('}')
diff --git a/vlib/v/tests/enum_test.v b/vlib/v/tests/enum_test.v
index 7e8a3be20e..1c5bf874b9 100644
--- a/vlib/v/tests/enum_test.v
+++ b/vlib/v/tests/enum_test.v
@@ -34,7 +34,7 @@ fn test_enum() {
 
 fn test_in() {
 	color := Color.red
-	num := 3	// used to be an expr bug before `in`
+	num := 3 // used to be an expr bug before `in`
 	assert color in [.red, .green]
 	assert num == 3
 	println(color)
@@ -118,3 +118,18 @@ fn test_typed_enum() {
 	}
 }
 */
+
+enum FileType {
+	unknown
+	wiki
+	file
+	image
+	html
+}
+
+fn test_enum_instance() {
+	mut filetype := FileType{}
+	eprintln(filetype)
+	s := 'x $filetype z'
+	assert s == 'x unknown z'
+}