all: wrap up unsafe { nil } (p. 3)

vlib/builtin/array_d_gcboehm_opt.v

@@ -72,7 +72,7 @@ fn (mut a array) ensure_cap_noscan(required int) {
 	}
 	new_size := u64(cap) * u64(a.element_size)
 	new_data := vcalloc_noscan(new_size)
-	if a.data != voidptr(0) {
+	if a.data != unsafe { nil } {
 		unsafe { vmemcpy(new_data, a.data, u64(a.len) * u64(a.element_size)) }
 		// TODO: the old data may be leaked when no GC is used (ref-counting?)
 	}

vlib/builtin/builtin.c.v

@@ -653,4 +653,4 @@ pub fn print_backtrace() {
 __global g_main_argc = int(0)
 
 [markused]
-__global g_main_argv = voidptr(0)
+__global g_main_argv = unsafe { nil }

vlib/builtin/builtin_windows.c.v

@@ -267,7 +267,7 @@ fn break_if_debugger_attached() {
 	$if tinyc {
 		unsafe {
 			mut ptr := &voidptr(0)
-			*ptr = voidptr(0)
+			*ptr = nil
 			_ = ptr
 		}
 	} $else {

vlib/builtin/isnil_test.v

@@ -4,7 +4,7 @@ fn test_isnil_byteptr() {
 }
 
 fn test_isnil_voidptr() {
-	pv := voidptr(0)
+	pv := unsafe { nil }
 	assert isnil(pv)
 }
 

vlib/builtin/js/map.js.v

@@ -20,7 +20,7 @@ fn (mut m map) internal_set(key JS.Any, val JS.Any) {
 }
 
 fn (mut m map) internal_get(key JS.Any) JS.Any {
-	mut val := JS.Any(voidptr(0))
+	mut val := JS.Any(unsafe { nil })
 	//$if es5 {
 	#if (typeof key != "string" && '$toJS' in key) key = key.$toJS();
 	#val =  m.val.map[key]

vlib/builtin/linux_bare/memory_managment.v

@@ -43,11 +43,11 @@ fn system_alloc(_ voidptr, size usize) (voidptr, usize, u32) {
 	if e == .enoerror {
 		return a, size, 0
 	}
-	return voidptr(0), 0, 0
+	return unsafe { nil }, 0, 0
 }
 
 fn system_remap(_ voidptr, ptr voidptr, oldsize usize, newsize usize, can_move bool) voidptr {
-	return voidptr(0)
+	return unsafe { nil }
 }
 
 fn system_free_part(_ voidptr, ptr voidptr, oldsize usize, newsize usize) bool {
@@ -87,6 +87,6 @@ fn get_linux_allocator() dlmalloc.Allocator {
 		can_release_part: system_can_release_part
 		allocates_zeros: system_allocates_zeros
 		page_size: system_page_size
-		data: voidptr(0)
+		data: unsafe { nil }
 	}
 }

vlib/builtin/map.v

@@ -488,7 +488,7 @@ fn (mut m map) get_and_set(key voidptr, zero voidptr) voidptr {
 		// Key not found, insert key with zero-value
 		m.set(key, zero)
 	}
-	return voidptr(0)
+	return unsafe { nil }
 }
 
 // If `key` matches the key of an element in the container,

vlib/builtin/map_test.v

@@ -210,8 +210,8 @@ fn test_various_map_value() {
 	// m13['test'] = rune(0)
 	// assert m13['test'] == rune(0)
 	mut m14 := map[string]voidptr{}
-	m14['test'] = voidptr(0)
+	m14['test'] = unsafe { nil }
-	assert m14['test'] == voidptr(0)
+	assert m14['test'] == unsafe { nil }
 	mut m15 := map[string]&u8{}
 	m15['test'] = &u8(0)
 	assert m15['test'] == &u8(0)

vlib/builtin/prealloc.c.v

@@ -65,7 +65,7 @@ fn vmemory_block_malloc(n isize) &byte {
 [unsafe]
 fn prealloc_vinit() {
 	unsafe {
-		g_memory_block = vmemory_block_new(voidptr(0), prealloc_block_size)
+		g_memory_block = vmemory_block_new(nil, prealloc_block_size)
 		$if !freestanding {
 			C.atexit(prealloc_vcleanup)
 		}

vlib/builtin/wasm_bare/libc_impl.v

@@ -148,7 +148,7 @@ fn bare_backtrace() string {
 fn __exit(code int) {
 	unsafe {
 		// the only way to abort process execution in WASM
-		mut x := &int(voidptr(0))
+		mut x := &int(nil)
 		*x = code
 	}
 	for {}

vlib/datatypes/fsm/fsm.v

@@ -14,7 +14,7 @@ mut:
 struct Transition {
 mut:
 	to                string
-	condition_handler ConditionFn = voidptr(0)
+	condition_handler ConditionFn = unsafe { nil }
 }
 
 pub struct StateMachine {

vlib/datatypes/linked_list.v

@@ -87,14 +87,14 @@ pub fn (mut list LinkedList<T>) pop() ?T {
 	if unsafe { node.next == 0 } {
 		// first node case
 		// set to null
-		list.head = voidptr(0)
+		list.head = unsafe { nil }
 	} else {
 		for unsafe { node.next.next != 0 } {
 			node = node.next
 		}
 		to_return = node.next.data
 		// set to null
-		node.next = voidptr(0)
+		node.next = unsafe { nil }
 	}
 	list.len -= 1
 	return to_return

vlib/dlmalloc/dlmalloc_sys_nix.c.v

@@ -55,22 +55,22 @@ fn system_alloc(_ voidptr, size usize) (voidptr, usize, u32) {
 		unsafe {
 			mem_prot := MemProt(int(MemProt.prot_read) | int(MemProt.prot_write))
 			map_flags := MapFlags(int(MapFlags.map_private) | int(MapFlags.map_anonymous))
-			addr := C.mmap(voidptr(0), size, int(mem_prot), int(map_flags), -1, 0)
+			addr := C.mmap(nil, size, int(mem_prot), int(map_flags), -1, 0)
 
 			if addr == voidptr(-1) {
-				return voidptr(0), 0, 0
+				return nil, 0, 0
 			} else {
 				return addr, size, 0
 			}
 		}
 	} $else {
-		return voidptr(0), 0, 0
+		return unsafe { nil }, 0, 0
 	}
-	return voidptr(0), 0, 0
+	return unsafe { nil }, 0, 0
 }
 
 fn system_remap(_ voidptr, ptr voidptr, oldsize usize, newsize usize, can_move bool) voidptr {
-	return voidptr(0)
+	return unsafe { nil }
 }
 
 fn system_free_part(_ voidptr, ptr voidptr, oldsize usize, newsize usize) bool {
@@ -121,6 +121,6 @@ pub fn get_system_allocator() Allocator {
 		can_release_part: system_can_release_part
 		allocates_zeros: system_allocates_zeros
 		page_size: system_page_size
-		data: voidptr(0)
+		data: unsafe { nil }
 	}
 }

vlib/dlmalloc/dlmalloc_sys_windows.c.v

@@ -1,11 +1,11 @@
 module dlmalloc
 
 fn system_alloc(_ voidptr, size usize) (voidptr, usize, u32) {
-	return voidptr(0), 0, 0
+	return unsafe { nil }, 0, 0
 }
 
 fn system_remap(_ voidptr, ptr voidptr, oldsize usize, newsize usize, can_move bool) voidptr {
-	return voidptr(0)
+	return unsafe { nil }
 }
 
 fn system_free_part(_ voidptr, ptr voidptr, oldsize usize, newsize usize) bool {
@@ -37,6 +37,6 @@ pub fn get_system_allocator() Allocator {
 		can_release_part: system_can_release_part
 		allocates_zeros: system_allocates_zeros
 		page_size: system_page_size
-		data: voidptr(0)
+		data: unsafe { nil }
 	}
 }

vlib/eventbus/eventbus.v

@@ -20,7 +20,7 @@ mut:
 struct EventHandler {
 	name     string
 	handler  EventHandlerFn
-	receiver voidptr = voidptr(0)
+	receiver voidptr = unsafe { nil }
 	once     bool
 }
 

vlib/gg/image.v

@@ -10,7 +10,7 @@ pub struct DrawImageConfig {
 pub:
 	flip_x    bool
 	flip_y    bool
-	img       &Image = voidptr(0)
+	img       &Image = unsafe { nil }
 	img_id    int
 	img_rect  Rect // defines the size and position on image when rendering to the screen
 	part_rect Rect // defines the size and position of part of the image to use when rendering

vlib/js/dom/dom.js.v

@@ -343,7 +343,7 @@ pub const (
 )
 
 pub fn window() JS.Window {
-	mut x := JS.Any(voidptr(0))
+	mut x := JS.Any(unsafe { nil })
 	#x = window;
 
 	return x
@@ -359,7 +359,7 @@ pub type EventCallback = fn (JS.Event)
 // that is EventTarget. When you need access only to Event itself you can just use `fn (JS.Event)` as listener.
 pub fn event_listener(callback fn (JS.EventTarget, JS.Event)) EventCallback {
 	return fn [callback] (event JS.Event) {
-		mut target := JS.EventTarget(voidptr(0))
+		mut target := JS.EventTarget(unsafe { nil })
 		#target = this;
 		callback(target, event)
 	}
@@ -490,7 +490,7 @@ pub type OnDeviceOrientation = fn (ev JS.DeviceOrientationEvent) JS.Any
 
 pub fn on_device_motion(cb fn (win JS.Window, ev JS.DeviceMotionEvent) JS.Any) OnDeviceMotion {
 	clos := fn [cb] (ev JS.DeviceMotionEvent) JS.Any {
-		mut win := JS.Any(voidptr(0))
+		mut win := JS.Any(unsafe { nil })
 		#win = this;
 
 		return cb(win, ev)
@@ -500,7 +500,7 @@ pub fn on_device_motion(cb fn (win JS.Window, ev JS.DeviceMotionEvent) JS.Any) O
 
 pub fn on_device_orientation(cb fn (win JS.Window, ev JS.DeviceOrientationEvent) JS.Any) OnDeviceOrientation {
 	clos := fn [cb] (ev JS.DeviceOrientationEvent) JS.Any {
-		mut win := JS.Any(voidptr(0))
+		mut win := JS.Any(unsafe { nil })
 		#win = this;
 
 		return cb(win, ev)
@@ -837,7 +837,7 @@ pub fn event_type(ev JS.Event) string {
 }
 
 pub fn create_event(typ string, bubbles bool, cancelable bool, composed bool) JS.Event {
-	mut ev := JS.Event(voidptr(0))
+	mut ev := JS.Event(unsafe { nil })
 	#ev = new Event(typ.str,bubbles.val,cancelable.val,composed.val);
 
 	return ev

vlib/js/js.js.v

@@ -23,7 +23,7 @@ pub interface JS.Response {
 }
 
 pub fn fetch(input string, init map[string]JS.Any) promise.Promise<JS.Response, JS.String> {
-	p_init := JS.Any(voidptr(0))
+	p_init := JS.Any(unsafe { nil })
 	p := promise.Promise<JS.Response, String>{p_init}
 
 	#let obj = {}; for (let [key,val] of init.map) { obj[key] = val; }

vlib/mysql/mysql.v

@@ -158,7 +158,7 @@ pub fn (mut conn Connection) set_option(option_type int, val voidptr) {
 // get_option - return the value of an option, settable by `set_option`.
 // https://dev.mysql.com/doc/c-api/5.7/en/mysql-get-option.html
 pub fn (conn &Connection) get_option(option_type int) ?voidptr {
-	ret := voidptr(0)
+	ret := unsafe { nil }
 	if C.mysql_get_option(conn.conn, option_type, &ret) != 0 {
 		return error_with_code(get_error_msg(conn.conn), get_errno(conn.conn))
 	}

vlib/os/environment.c.v

@@ -33,7 +33,7 @@ pub fn getenv_opt(key string) ?string {
 			return string_from_wide(s)
 		} $else {
 			s := C.getenv(&char(key.str))
-			if s == voidptr(0) {
+			if s == nil {
 				return none
 			}
 			// Note: C.getenv *requires* that the result be copied.

vlib/os/os.c.v

@@ -264,7 +264,7 @@ pub fn vfopen(path string, mode string) ?&C.FILE {
 	if path.len == 0 {
 		return error('vfopen called with ""')
 	}
-	mut fp := voidptr(0)
+	mut fp := unsafe { nil }
 	$if windows {
 		fp = C._wfopen(path.to_wide(), mode.to_wide())
 	} $else {

vlib/os/os_windows.c.v

@@ -271,7 +271,7 @@ const (
 // ptr_win_get_error_msg return string (voidptr)
 // representation of error, only for windows.
 fn ptr_win_get_error_msg(code u32) voidptr {
-	mut buf := voidptr(0)
+	mut buf := unsafe { nil }
 	// Check for code overflow
 	if code > u32(os.max_error_code) {
 		return buf

vlib/os/process_windows.c.v

@@ -190,7 +190,8 @@ fn (mut p Process) win_read_string(idx int, maxbytes int) (string, int) {
 		return '', 0
 	}
 	mut bytes_avail := int(0)
-	if !C.PeekNamedPipe(rhandle, voidptr(0), int(0), voidptr(0), &bytes_avail, voidptr(0)) {
+	if !C.PeekNamedPipe(rhandle, unsafe { nil }, int(0), unsafe { nil }, &bytes_avail,
+		unsafe { nil }) {
 		return '', 0
 	}
 	if bytes_avail == 0 {

vlib/picoev/picoev.v

@@ -57,7 +57,7 @@ pub:
 	port         int = 8080
 	cb           fn (voidptr, picohttpparser.Request, mut picohttpparser.Response)
 	err_cb       fn (voidptr, picohttpparser.Request, mut picohttpparser.Response, IError) = default_err_cb
-	user_data    voidptr = voidptr(0)
+	user_data    voidptr = unsafe { nil }
 	timeout_secs int     = 8
 	max_headers  int     = 100
 }

vlib/sync/channels.c.v

@@ -124,10 +124,10 @@ pub fn (mut ch Channel) close() {
 	if !C.atomic_compare_exchange_strong_u16(&ch.closed, &open_val, 1) {
 		return
 	}
-	mut nulladr := unsafe { voidptr(0) }
+	mut nulladr := unsafe { nil }
 	for !C.atomic_compare_exchange_weak_ptr(unsafe { &voidptr(&ch.adr_written) }, &nulladr,
 		voidptr(-1)) {
-		nulladr = unsafe { voidptr(0) }
+		nulladr = unsafe { nil }
 	}
 	ch.readsem_im.post()
 	ch.readsem.post()
@@ -191,10 +191,10 @@ fn (mut ch Channel) try_push_priv(src voidptr, no_block bool) ChanState {
 			{
 				// there is a reader waiting for us
 				unsafe { C.memcpy(wradr, src, ch.objsize) }
-				mut nulladr := unsafe { voidptr(0) }
+				mut nulladr := unsafe { nil }
 				for !C.atomic_compare_exchange_weak_ptr(unsafe { &voidptr(&ch.adr_written) },
 					&nulladr, wradr) {
-					nulladr = unsafe { voidptr(0) }
+					nulladr = unsafe { nil }
 				}
 				ch.readsem_im.post()
 				return .success
@@ -382,7 +382,7 @@ fn (mut ch Channel) try_pop_priv(dest voidptr, no_block bool) ChanState {
 				{
 					// there is a writer waiting for us
 					unsafe { C.memcpy(dest, rdadr, ch.objsize) }
-					mut nulladr := unsafe { voidptr(0) }
+					mut nulladr := unsafe { nil }
 					for !C.atomic_compare_exchange_weak_ptr(unsafe { &voidptr(&ch.adr_read) },
 						&nulladr, rdadr) {
 						nulladr = unsafe { nil }

vlib/sync/pool/pool.v

@@ -7,7 +7,7 @@ import runtime
 fn C.atomic_fetch_add_u32(voidptr, u32) u32
 
 pub const (
-	no_result = voidptr(0)
+	no_result = unsafe { nil }
 )
 
 pub struct PoolProcessor {
@@ -48,7 +48,7 @@ pub fn new_pool_processor(context PoolProcessorConfig) &PoolProcessor {
 	mut pool := PoolProcessor{
 		items: []
 		results: []
-		shared_context: voidptr(0)
+		shared_context: unsafe { nil }
 		thread_contexts: []
 		njobs: context.maxjobs
 		ntask: 0

vlib/term/ui/input_windows.c.v

@@ -114,7 +114,7 @@ pub fn (mut ctx Context) run() ? {
 		}
 		if !ctx.paused {
 			sw.restart()
-			if ctx.cfg.event_fn != voidptr(0) {
+			if ctx.cfg.event_fn != unsafe { nil } {
 				ctx.parse_events()
 			}
 			ctx.frame()

vlib/term/ui/termios_nix.c.v

@@ -233,7 +233,7 @@ fn (mut ctx Context) termios_loop() {
 		}
 		if !ctx.paused {
 			sw.restart()
-			if ctx.cfg.event_fn != voidptr(0) {
+			if ctx.cfg.event_fn != unsafe { nil } {
 				unsafe {
 					len := C.read(C.STDIN_FILENO, &u8(ctx.read_buf.data) + ctx.read_buf.len,
 						ctx.read_buf.cap - ctx.read_buf.len)

vlib/time/time_windows.c.v

@@ -110,7 +110,7 @@ pub fn (t Time) local() Time {
 		millisecond: u16(t.microsecond / 1000)
 	}
 	st_local := SystemTime{}
-	C.SystemTimeToTzSpecificLocalTime(voidptr(0), &st_utc, &st_local)
+	C.SystemTimeToTzSpecificLocalTime(unsafe { nil }, &st_utc, &st_local)
 	t_local := Time{
 		year: st_local.year
 		month: st_local.month
@@ -133,7 +133,7 @@ fn win_now() Time {
 	st_utc := SystemTime{}
 	C.FileTimeToSystemTime(&ft_utc, &st_utc)
 	st_local := SystemTime{}
-	C.SystemTimeToTzSpecificLocalTime(voidptr(0), &st_utc, &st_local)
+	C.SystemTimeToTzSpecificLocalTime(unsafe { nil }, &st_utc, &st_local)
 	t := Time{
 		year: st_local.year
 		month: st_local.month

vlib/v/ast/table.v

@@ -33,7 +33,7 @@ pub mut:
 	used_vweb_types    []Type // vweb context types, filled in by checker, when pref.skip_unused = true;
 	used_maps          int    // how many times maps were used, filled in by checker, when pref.skip_unused = true;
 	panic_handler      FnPanicHandler = default_table_panic_handler
-	panic_userdata     voidptr        = voidptr(0) // can be used to pass arbitrary data to panic_handler;
+	panic_userdata     voidptr        = unsafe { nil } // can be used to pass arbitrary data to panic_handler;
 	panic_npanics      int
 	cur_fn             &FnDecl = unsafe { 0 } // previously stored in Checker.cur_fn and Gen.cur_fn
 	cur_concrete_types []Type  // current concrete types, e.g. <int, string>

vlib/v/ast/walker/walker_test.v

@@ -46,7 +46,7 @@ fn test_inspect() {
 module main
 	'
 	file := parse_text(source)
-	walker.inspect(file, voidptr(0), fn (node &ast.Node, data voidptr) bool {
+	walker.inspect(file, unsafe { nil }, fn (node &ast.Node, data voidptr) bool {
 		// Second visit must be ast.Stmt
 		if node is ast.Stmt {
 			if node !is ast.Module {

vlib/v/checker/return.v

@@ -144,7 +144,7 @@ pub fn (mut c Checker) return_stmt(mut node ast.Return) {
 			if mut r_expr is ast.Ident {
 				if mut r_expr.obj is ast.Var {
 					mut obj := unsafe { &r_expr.obj }
-					if c.fn_scope != voidptr(0) {
+					if c.fn_scope != unsafe { nil } {
 						obj = c.fn_scope.find_var(r_expr.obj.name) or { obj }
 					}
 					if obj.is_stack_obj && !c.inside_unsafe {

vlib/v/checker/tests/fixed_array_conv.vv

@@ -1,5 +1,5 @@
-arr := [2,3]!
+arr := [2, 3]!
-mut p := voidptr(0)
+mut p := unsafe { nil }
 p = arr
 mut ip := &int(0)
 ip = arr
@@ -10,5 +10,5 @@ _ = ip
 unsafe {
 	_ = memdup(arr, 1)
 	_ = tos(arr, 1)
-	fn (p &int){}(arr)
+	fn (p &int) {}(arr)
 }

vlib/v/checker/tests/pointer_ops.vv

@@ -1,7 +1,7 @@
 // void* arithmetic is not allowed in MSVC, so ban it
 fn test_voidptr() {
 	unsafe {
-		mut p := voidptr(0)
+		mut p := nil
 		_ = p + 1
 		p++
 		p += 3
@@ -14,4 +14,4 @@ fn test_voidptr() {
 	}
 }
 
-struct Foo{}
+struct Foo {}

vlib/v/checker/tests/voidptr_dereference_err.vv

@@ -1,5 +1,5 @@
 fn main() {
-	mut a := voidptr(0)
+	mut a := unsafe { nil }
 	mut b := 123
 	a = &b
 	println(*a)

vlib/v/dotgraph/dotgraph.v

@@ -38,7 +38,7 @@ pub struct NewNodeConfig {
 	node_name        string
 	should_highlight bool
 	tooltip          string
-	ctx              voidptr = voidptr(0)
+	ctx              voidptr = unsafe { nil }
 	name2node_fn     FnLabel2NodeName = node_name
 }
 
@@ -58,7 +58,7 @@ pub fn (mut d DotGraph) new_node(nlabel string, cfg NewNodeConfig) {
 
 pub struct NewEdgeConfig {
 	should_highlight bool
-	ctx              voidptr = voidptr(0)
+	ctx              voidptr = unsafe { nil }
 	name2node_fn     FnLabel2NodeName = node_name
 }
 

vlib/v/fmt/tests/cast_input.vv

@@ -2,14 +2,13 @@ import v.ast { InfixExpr }
 import v.table { Type }
 
 fn test_as() {
-	_ := sum_expr()     as ast.InfixExpr
+	_ := sum_expr() as InfixExpr
 	_ := sum_expr() as ast.PrefixExpr
 }
 
 fn test_cast() {
 	_ := f32(0)
-	_ := table.Type(0)
+	_ := Type(0)
 	_ := ast.Expr(sum_expr())
-	_ := voidptr(0)
+	_ := unsafe { nil }
 }
-

vlib/v/fmt/tests/fntype_alias_keep.vv

@@ -17,10 +17,10 @@ pub type MouseMoveFn = fn (e MouseMoveEvent, func voidptr)
 [heap]
 pub struct Window {
 pub mut:
-	ui            &UI = voidptr(0)
+	ui            &UI = unsafe { nil }
 	children      []Widget
-	child_window  &Window = voidptr(0)
+	child_window  &Window = unsafe { nil }
-	parent_window &Window = voidptr(0)
+	parent_window &Window = unsafe { nil }
 	has_textbox   bool // for initial focus
 	tab_index     int
 	just_tabbed   bool

vlib/v/gen/c/assign.v

@@ -158,7 +158,7 @@ fn (mut g Gen) assign_stmt(node_ ast.AssignStmt) {
 					ret_styp := g.typ(val.decl.return_type)
 					g.write('$ret_styp (*$ident.name) (')
 					def_pos := g.definitions.len
-					g.fn_decl_params(val.decl.params, voidptr(0), false)
+					g.fn_decl_params(val.decl.params, unsafe { nil }, false)
 					g.definitions.go_back(g.definitions.len - def_pos)
 					g.write(') = ')
 				} else {
@@ -344,7 +344,7 @@ fn (mut g Gen) assign_stmt(node_ ast.AssignStmt) {
 
 				g.write('$ret_styp ($msvc_call_conv*${g.get_ternary_name(ident.name)}) (')
 				def_pos := g.definitions.len
-				g.fn_decl_params(func.func.params, voidptr(0), false)
+				g.fn_decl_params(func.func.params, unsafe { nil }, false)
 				g.definitions.go_back(g.definitions.len - def_pos)
 				g.write(')$call_conv_attribute_suffix')
 			} else {

vlib/v/gen/golang/golang.v

@@ -44,7 +44,7 @@ pub mut:
 	in_lambda_depth    int
 	inside_const       bool
 	is_mbranch_expr    bool // match a { x...y { } }
-	fn_scope           &ast.Scope = voidptr(0)
+	fn_scope           &ast.Scope = unsafe { nil }
 	wsinfix_depth      int
 	nlines             int
 }

vlib/v/gen/js/js.v

@@ -1124,7 +1124,7 @@ fn (mut g JsGen) gen_ctemp_var(tvar ast.CTempVar) {
 
 fn (mut g JsGen) gen_assert_metainfo(node ast.AssertStmt) string {
 	mod_path := g.file.path
-	fn_name := if g.fn_decl == voidptr(0) || g.fn_decl.is_anon { 'anon' } else { g.fn_decl.name }
+	fn_name := if g.fn_decl == unsafe { nil } || g.fn_decl.is_anon { 'anon' } else { g.fn_decl.name }
 	line_nr := node.pos.line_nr
 	src := node.expr.str()
 	metaname := 'v_assert_meta_info_$g.new_tmp_var()'
@@ -1244,7 +1244,7 @@ fn (mut g JsGen) gen_assert_stmt(mut node ast.AssertStmt) {
 	}
 	g.writeln('} else {')
 	g.inc_indent()
-	fname := if g.fn_decl == voidptr(0) || g.fn_decl.is_anon { 'anon' } else { g.fn_decl.name }
+	fname := if g.fn_decl == unsafe { nil } || g.fn_decl.is_anon { 'anon' } else { g.fn_decl.name }
 	g.writeln('builtin__eprintln(new string("$mod_path:${node.pos.line_nr + 1}: FAIL: fn ${fname}(): assert $s_assertion"));')
 	g.writeln('builtin__exit(1);')
 	g.dec_indent()

vlib/v/preludes/test_runner.v

@@ -102,7 +102,7 @@ pub fn change_test_runner(x &TestRunner) {
 	if pobj != 0 {
 		test_runner.free()
 		unsafe {
-			(&C.main__TestRunner(&test_runner))._object = voidptr(0)
+			(&C.main__TestRunner(&test_runner))._object = nil
 		}
 	}
 	test_runner = *x

vlib/v/tests/const_fixed_array_containing_references_to_itself_test.v

@@ -2,7 +2,7 @@ struct Abc {
 	prev &Abc
 }
 
-const a = [Abc{voidptr(0)}, Abc{unsafe { &a[0] }}, Abc{unsafe { &a[1] }}]!
+const a = [Abc{unsafe { nil }}, Abc{unsafe { &a[0] }}, Abc{unsafe { &a[1] }}]!
 
 fn test_fixed_array() {
 	eprintln(a)

vlib/v/tests/interface_edge_cases/fn_returning_voidptr_casted_as_interface_test.v

@@ -15,7 +15,7 @@ struct Abc {
 fn (a Abc) xyz() {}
 
 fn resource__null() &IAbc {
-	return voidptr(0)
+	return unsafe { nil }
 }
 
 fn test_fn_returning_voidptr_casted_as_interface_works() {

vlib/v/tests/interface_edge_cases/pass_voidptr_as_interface_reference_test.v

@@ -15,5 +15,5 @@ fn test_passing_voidptr_as_an_interface_reference() {
 	assert f(&i) == '&IAbc(Abc{})'
 	// a voidptr() cast is an escape hatch, that should be allowed
 	// but perhaps it should be forced by the compiler to be in unsafe{}
-	assert f(unsafe { voidptr(0) }) == '&IAbc(0x0)'
+	assert f(unsafe { nil }) == '&IAbc(0x0)'
 }

vlib/v/tests/interface_edge_cases/voidptr_casted_as_an_interface_test.v

@@ -15,7 +15,7 @@ fn f(i &IAbc) string {
 }
 
 fn test_voidptr_casted_as_an_interface_reference() {
-	mut pi := &IAbc(voidptr(0))
+	mut pi := &IAbc(unsafe { nil })
 	dump(pi)
 	assert f(pi) == '&IAbc(0x0)'
 	//

vlib/v/tests/interface_embedding_method_call_test.v

@@ -45,7 +45,7 @@ interface PopView {
 [heap]
 pub struct Button {
 mut:
-	window &Window = voidptr(0)
+	window &Window = unsafe { nil }
 }
 
 pub fn (mut b Button) init(window &Window) {

vlib/v/tests/multiret_with_ptrtype_test.v

@@ -1,5 +1,5 @@
 fn multi_voidptr_ret() (voidptr, bool) {
-	return voidptr(0), true
+	return unsafe { nil }, true
 }
 
 fn multi_byteptr_ret() (&u8, bool) {

vlib/v/tests/return_voidptr_test.v

@@ -3,24 +3,24 @@ struct Zest {
 }
 
 fn (t Zest) get_a_finger_to_the_moon() voidptr {
-	return voidptr(0)
+	return unsafe { nil }
 }
 
 fn get_the_dao_way() voidptr {
-	return voidptr(0)
+	return unsafe { nil }
 }
 
 fn test_returning_a_void_pointer_from_a_method() {
 	t := &Zest{
 		val: 123
 	}
-	z := voidptr(0)
+	z := unsafe { nil }
 	assert z == t.get_a_finger_to_the_moon()
 	assert t.get_a_finger_to_the_moon() == 0
 }
 
 fn test_returning_a_void_pointer_from_a_function() {
-	z := voidptr(0)
+	z := unsafe { nil }
 	assert z == get_the_dao_way()
 	assert get_the_dao_way() == 0
 }

vlib/v/tests/struct_init_with_complex_fields_test.v

@@ -4,7 +4,7 @@ type Fnc = fn ()
 
 struct Foo {
 	Bar
-	fnc_fn Fnc = voidptr(0)
+	fnc_fn Fnc = unsafe { nil }
 }
 
 struct App {

vlib/v/tests/testcase_leak.vv

@@ -7,6 +7,6 @@
 fn main() {
 	mut y := unsafe { malloc(1000) }
 	// unsafe { free(y) } // leak if commented out
-	y = voidptr(0)
+	y = unsafe { nil }
 	gc_check_leaks()
 }