Make the utf16 conversion procedures in `core:sys/windows` safer by checking for memory leaks

core/os/dir_windows.odin

@@ -13,7 +13,7 @@ read_dir :: proc(fd: Handle, n: int, allocator := context.allocator) -> (fi: []F
 		if d.cFileName[0] == '.' && d.cFileName[1] == '.' && d.cFileName[2] == 0 {
 			return
 		}
-		path := strings.concatenate({base_path, `\`, win32.utf16_to_utf8(d.cFileName[:])})
+		path := strings.concatenate({base_path, `\`, win32.utf16_to_utf8(d.cFileName[:]) or_else ""})
 		fi.fullpath = path
 		fi.name = basename(path)
 		fi.size = i64(d.nFileSizeHigh)<<32 + i64(d.nFileSizeLow)

core/os/env_windows.odin

@@ -22,7 +22,7 @@ lookup_env :: proc(key: string, allocator := context.allocator) -> (value: strin
 		}
 
 		if n <= u32(len(b)) {
-			value = win32.utf16_to_utf8(b[:n], allocator)
+			value, _ = win32.utf16_to_utf8(b[:n], allocator)
 			found = true
 			return
 		}
@@ -76,7 +76,7 @@ environ :: proc(allocator := context.allocator) -> []string {
 			if i <= from {
 				break
 			}
-			append(&r, win32.utf16_to_utf8(envs[from:i], allocator))
+			append(&r, win32.utf16_to_utf8(envs[from:i], allocator) or_else "")
 			from = i + 1
 		}
 	}

core/os/file_windows.odin

@@ -365,7 +365,7 @@ get_current_directory :: proc(allocator := context.allocator) -> string {
 
 	win32.ReleaseSRWLockExclusive(&cwd_lock)
 
-	return win32.utf16_to_utf8(dir_buf_wstr, allocator)
+	return win32.utf16_to_utf8(dir_buf_wstr, allocator) or_else ""
 }
 
 set_current_directory :: proc(path: string) -> (err: Errno) {

core/os/os2/env_windows.odin

@@ -29,7 +29,7 @@ _lookup_env :: proc(key: string, allocator: runtime.Allocator) -> (value: string
 		return "", false
 	}
 
-	value = win32.utf16_to_utf8(b[:n], allocator)
+	value = win32.utf16_to_utf8(b[:n], allocator) or_else ""
 	found = true
 	return
 }
@@ -73,7 +73,7 @@ _environ :: proc(allocator: runtime.Allocator) -> []string {
 				break
 			}
 			w := ([^]u16)(p)[from:i]
-			append(&r, win32.utf16_to_utf8(w, allocator))
+			append(&r, win32.utf16_to_utf8(w, allocator) or_else "")
 			from = i + 1
 		}
 	}

core/os/os2/file.odin

@@ -21,6 +21,7 @@ File_Mode_Device      :: File_Mode(1<<18)
 File_Mode_Char_Device :: File_Mode(1<<19)
 File_Mode_Sym_Link    :: File_Mode(1<<20)
 
+File_Mode_Perm :: File_Mode(0o777) // Unix permision bits
 
 File_Flags :: distinct bit_set[File_Flag; uint]
 File_Flag :: enum {
@@ -194,3 +195,20 @@ is_dir :: proc(path: string) -> bool {
 	return _is_dir(path)
 }
 
+
+copy_file :: proc(dst_path, src_path: string) -> Error {
+	src := open(src_path) or_return
+	defer close(src)
+
+	info := fstat(src, _file_allocator()) or_return
+	defer file_info_delete(info, _file_allocator())
+	if info.is_dir {
+		return .Invalid_File
+	}
+
+	dst := open(dst_path, {.Read, .Write, .Create, .Trunc}, info.mode & File_Mode_Perm) or_return
+	defer close(dst)
+
+	_, err := io.copy(to_writer(dst), to_reader(src))
+	return err
+}

core/os/os2/file_stream.odin

@@ -2,12 +2,20 @@ package os2
 
 import "core:io"
 
-file_to_stream :: proc(f: ^File) -> (s: io.Stream) {
+to_stream :: proc(f: ^File) -> (s: io.Stream) {
 	s.stream_data = f
 	s.stream_vtable = _file_stream_vtable
 	return
 }
 
+to_writer :: proc(f: ^File) -> (s: io.Writer) {
+	return {to_stream(f)}
+}
+to_reader :: proc(f: ^File) -> (s: io.Reader) {
+	return {to_stream(f)}
+}
+
+
 @(private)
 error_to_io_error :: proc(ferr: Error) -> io.Error {
 	if ferr == nil {

core/os/os2/file_windows.odin

@@ -529,16 +529,16 @@ _normalize_link_path :: proc(p: []u16, allocator: runtime.Allocator) -> (str: st
 	}
 
 	if !has_unc_prefix(p) {
-		return win32.utf16_to_utf8(p, allocator), nil
+		return win32.utf16_to_utf8(p, allocator)
 	}
 
 	ws := p[4:]
 	switch {
 	case len(ws) >= 2 && ws[1] == ':':
-		return win32.utf16_to_utf8(ws, allocator), nil
+		return win32.utf16_to_utf8(ws, allocator)
 	case has_prefix(ws, `UNC\`):
 		ws[3] = '\\' // override data in buffer
-		return win32.utf16_to_utf8(ws[3:], allocator), nil
+		return win32.utf16_to_utf8(ws[3:], allocator)
 	}
 
 
@@ -560,9 +560,9 @@ _normalize_link_path :: proc(p: []u16, allocator: runtime.Allocator) -> (str: st
 		ws = ws[4:]
 		if len(ws) > 3 && has_prefix(ws, `UNC`) {
 			ws[2] = '\\'
-			return win32.utf16_to_utf8(ws[2:], allocator), nil
+			return win32.utf16_to_utf8(ws[2:], allocator)
 		}
-		return win32.utf16_to_utf8(ws, allocator), nil
+		return win32.utf16_to_utf8(ws, allocator)
 	}
 	return "", .Invalid_Path
 }
@@ -593,7 +593,7 @@ _read_link :: proc(name: string, allocator: runtime.Allocator) -> (s: string, er
 		pb[rb.SubstituteNameOffset+rb.SubstituteNameLength] = 0
 		p := pb[rb.SubstituteNameOffset:][:rb.SubstituteNameLength]
 		if rb.Flags & win32.SYMLINK_FLAG_RELATIVE != 0 {
-			return win32.utf16_to_utf8(p, allocator), nil
+			return win32.utf16_to_utf8(p, allocator)
 		}
 		return _normalize_link_path(p, allocator)
 

core/os/os2/stat_windows.odin

@@ -57,7 +57,7 @@ full_path_from_name :: proc(name: string, allocator: runtime.Allocator) -> (path
 	if n == 0 {
 		return "", _get_platform_error()
 	}
-	return win32.utf16_to_utf8(buf[:n], allocator), nil
+	return win32.utf16_to_utf8(buf[:n], allocator)
 }
 
 
@@ -131,7 +131,7 @@ _cleanpath_from_handle :: proc(f: ^File, allocator: runtime.Allocator) -> (strin
 	}
 	buf := make([]u16, max(n, 260)+1, _temp_allocator())
 	n = win32.GetFinalPathNameByHandleW(h, raw_data(buf), u32(len(buf)), 0)
-	return _cleanpath_from_buf(buf[:n], allocator), nil
+	return _cleanpath_from_buf(buf[:n], allocator)
 }
 
 _cleanpath_from_handle_u16 :: proc(f: ^File) -> ([]u16, Error) {
@@ -149,7 +149,7 @@ _cleanpath_from_handle_u16 :: proc(f: ^File) -> ([]u16, Error) {
 	return _cleanpath_strip_prefix(buf[:n]), nil
 }
 
-_cleanpath_from_buf :: proc(buf: []u16, allocator: runtime.Allocator) -> string {
+_cleanpath_from_buf :: proc(buf: []u16, allocator: runtime.Allocator) -> (string, runtime.Allocator_Error) {
 	buf := buf
 	buf = _cleanpath_strip_prefix(buf)
 	return win32.utf16_to_utf8(buf, allocator)
@@ -194,15 +194,15 @@ file_type_mode :: proc(h: win32.HANDLE) -> File_Mode {
 
 
 
-_file_mode_from_file_attributes :: proc(FileAttributes: win32.DWORD, h: win32.HANDLE, ReparseTag: win32.DWORD) -> (mode: File_Mode) {
-	if FileAttributes & win32.FILE_ATTRIBUTE_READONLY != 0 {
+_file_mode_from_file_attributes :: proc(file_attributes: win32.DWORD, h: win32.HANDLE, ReparseTag: win32.DWORD) -> (mode: File_Mode) {
+	if file_attributes & win32.FILE_ATTRIBUTE_READONLY != 0 {
 		mode |= 0o444
 	} else {
 		mode |= 0o666
 	}
 
 	is_sym := false
-	if FileAttributes & win32.FILE_ATTRIBUTE_REPARSE_POINT == 0 {
+	if file_attributes & win32.FILE_ATTRIBUTE_REPARSE_POINT == 0 {
 		is_sym = false
 	} else {
 		is_sym = ReparseTag == win32.IO_REPARSE_TAG_SYMLINK || ReparseTag == win32.IO_REPARSE_TAG_MOUNT_POINT
@@ -211,7 +211,7 @@ _file_mode_from_file_attributes :: proc(FileAttributes: win32.DWORD, h: win32.HA
 	if is_sym {
 		mode |= File_Mode_Sym_Link
 	} else {
-		if FileAttributes & win32.FILE_ATTRIBUTE_DIRECTORY != 0 {
+		if file_attributes & win32.FILE_ATTRIBUTE_DIRECTORY != 0 {
 			mode |= 0o111 | File_Mode_Dir
 		}
 

core/os/os2/temp_file.odin

@@ -10,6 +10,6 @@ mkdir_temp :: proc(dir, pattern: string, allocator: runtime.Allocator) -> (strin
 	return _mkdir_temp(dir, pattern, allocator)
 }
 
-temp_dir :: proc(allocator: runtime.Allocator) -> string {
+temp_dir :: proc(allocator: runtime.Allocator) -> (string, Error) {
 	return _temp_dir(allocator)
 }

core/os/os2/temp_file_windows.odin

@@ -12,10 +12,10 @@ _mkdir_temp :: proc(dir, pattern: string, allocator: runtime.Allocator) -> (stri
 	return "", nil
 }
 
-_temp_dir :: proc(allocator: runtime.Allocator) -> string {
+_temp_dir :: proc(allocator: runtime.Allocator) -> (string, runtime.Allocator_Error) {
 	n := win32.GetTempPathW(0, nil)
 	if n == 0 {
-		return ""
+		return "", nil
 	}
 	b := make([]u16, max(win32.MAX_PATH, n), _temp_allocator())
 	n = win32.GetTempPathW(u32(len(b)), raw_data(b))

core/os/stat_windows.odin

@@ -20,7 +20,7 @@ full_path_from_name :: proc(name: string, allocator := context.allocator) -> (pa
 			return "", Errno(win32.GetLastError())
 		}
 		if n <= u32(len(buf)) {
-			return win32.utf16_to_utf8(buf[:n], allocator), ERROR_NONE
+			return win32.utf16_to_utf8(buf[:n], allocator) or_else "", ERROR_NONE
 		}
 		resize(&buf, len(buf)*2)
 	}
@@ -136,7 +136,7 @@ cleanpath_from_handle :: proc(fd: Handle) -> (string, Errno) {
 	if err != 0 {
 		return "", err
 	}
-	return win32.utf16_to_utf8(buf, context.allocator), err
+	return win32.utf16_to_utf8(buf, context.allocator) or_else "", err
 }
 @(private)
 cleanpath_from_handle_u16 :: proc(fd: Handle) -> ([]u16, Errno) {
@@ -157,7 +157,7 @@ cleanpath_from_handle_u16 :: proc(fd: Handle) -> ([]u16, Errno) {
 cleanpath_from_buf :: proc(buf: []u16) -> string {
 	buf := buf
 	buf = cleanpath_strip_prefix(buf)
-	return win32.utf16_to_utf8(buf, context.allocator)
+	return win32.utf16_to_utf8(buf, context.allocator) or_else ""
 }
 
 @(private)

core/sys/win32/comdlg32.odin

@@ -126,7 +126,7 @@ _open_file_dialog :: proc(title: string, dir: string,
 	}
 	
 
-	file_name := utf16_to_utf8(file_buf[:], allocator)
+	file_name, _ := utf16_to_utf8(file_buf[:], allocator)
 	path = strings.trim_right_null(file_name)
 	return
 }

core/sys/win32/crt.odin

@@ -10,6 +10,6 @@ foreign {
 get_cwd :: proc(allocator := context.temp_allocator) -> string {
 	buffer := make([]u16, MAX_PATH_WIDE, allocator)
 	_get_cwd_wide(Wstring(&buffer[0]), MAX_PATH_WIDE)
-	file := utf16_to_utf8(buffer[:], allocator)
+	file, _ := utf16_to_utf8(buffer[:], allocator)
 	return strings.trim_right_null(file)
 }

core/sys/win32/general.odin

@@ -1,6 +1,8 @@
 // +build windows
 package win32
 
+import "core:runtime"
+
 Uint_Ptr :: distinct uintptr
 Int_Ptr :: distinct int
 Long_Ptr :: distinct int
@@ -858,14 +860,14 @@ utf8_to_wstring :: proc(s: string, allocator := context.temp_allocator) -> Wstri
 	return nil
 }
 
-wstring_to_utf8 :: proc(s: Wstring, N: int, allocator := context.temp_allocator) -> string {
+wstring_to_utf8 :: proc(s: Wstring, N: int, allocator := context.temp_allocator) -> (str: string, err: runtime.Allocator_Error) {
 	if N == 0 {
-		return ""
+		return
 	}
 
 	n := wide_char_to_multi_byte(CP_UTF8, WC_ERR_INVALID_CHARS, s, i32(N), nil, 0, nil, nil)
 	if n == 0 {
-		return ""
+		return
 	}
 
 	// If N == -1 the call to wide_char_to_multi_byte assume the wide string is null terminated
@@ -873,11 +875,11 @@ wstring_to_utf8 :: proc(s: Wstring, N: int, allocator := context.temp_allocator)
 	// also null terminated.
 	// If N != -1 it assumes the wide string is not null terminated and the resulting string
 	// will not be null terminated, we therefore have to force it to be null terminated manually.
-	text := make([]byte, n+1 if N != -1 else n, allocator)
+	text := make([]byte, n+1 if N != -1 else n, allocator) or_return
 
 	if n1 := wide_char_to_multi_byte(CP_UTF8, WC_ERR_INVALID_CHARS, s, i32(N), cstring(&text[0]), n, nil, nil); n1 == 0 {
 		delete(text, allocator)
-		return ""
+		return "", nil
 	}
 
 	for i in 0..<n {
@@ -887,12 +889,12 @@ wstring_to_utf8 :: proc(s: Wstring, N: int, allocator := context.temp_allocator)
 		}
 	}
 
-	return string(text[:n])
+	return string(text[:n]), nil
 }
 
-utf16_to_utf8 :: proc(s: []u16, allocator := context.temp_allocator) -> string {
+utf16_to_utf8 :: proc(s: []u16, allocator := context.temp_allocator) -> (string, runtime.Allocator_Error) {
 	if len(s) == 0 {
-		return ""
+		return "", nil
 	}
 	return wstring_to_utf8(cast(Wstring)&s[0], len(s), allocator)
 }

core/sys/win32/tests/general.odin

@@ -1,41 +1,41 @@
 package win32_tests
 
-import "core:sys/win32"
+import win32 "core:sys/windows"
 import "core:testing"
 
 utf16_to_utf8 :: proc(t: ^testing.T, str: []u16, comparison: string, expected_result: bool, loc := #caller_location) {
-    result := win32.utf16_to_utf8(str[:]);
-    testing.expect(t, (result == comparison) == expected_result, "Incorrect utf16_to_utf8 conversion", loc);
+    result, _ := win32.utf16_to_utf8(str[:])
+    testing.expect(t, (result == comparison) == expected_result, "Incorrect utf16_to_utf8 conversion", loc)
 }
 
 wstring_to_utf8 :: proc(t: ^testing.T, str: []u16, comparison: string, expected_result: bool, loc := #caller_location) {
-    result := win32.wstring_to_utf8(nil if len(str) == 0 else cast(win32.Wstring)&str[0], -1);
-    testing.expect(t, (result == comparison) == expected_result, "Incorrect wstring_to_utf8 conversion", loc);
+    result, _ := win32.wstring_to_utf8(nil if len(str) == 0 else cast(win32.Wstring)&str[0], -1)
+    testing.expect(t, (result == comparison) == expected_result, "Incorrect wstring_to_utf8 conversion", loc)
 }
 
 @test
 test_utf :: proc(t: ^testing.T) {
-    utf16_to_utf8(t, []u16{}, "", true); 
-    utf16_to_utf8(t, []u16{0}, "", true); 
-    utf16_to_utf8(t, []u16{0, 't', 'e', 's', 't'}, "", true); 
-    utf16_to_utf8(t, []u16{0, 't', 'e', 's', 't', 0}, "", true); 
-    utf16_to_utf8(t, []u16{'t', 'e', 's', 't'}, "test", true); 
-    utf16_to_utf8(t, []u16{'t', 'e', 's', 't', 0}, "test", true); 
-    utf16_to_utf8(t, []u16{'t', 'e', 0, 's', 't'}, "te", true); 
-    utf16_to_utf8(t, []u16{'t', 'e', 0, 's', 't', 0}, "te", true); 
+    utf16_to_utf8(t, []u16{}, "", true)
+    utf16_to_utf8(t, []u16{0}, "", true)
+    utf16_to_utf8(t, []u16{0, 't', 'e', 's', 't'}, "", true)
+    utf16_to_utf8(t, []u16{0, 't', 'e', 's', 't', 0}, "", true)
+    utf16_to_utf8(t, []u16{'t', 'e', 's', 't'}, "test", true)
+    utf16_to_utf8(t, []u16{'t', 'e', 's', 't', 0}, "test", true)
+    utf16_to_utf8(t, []u16{'t', 'e', 0, 's', 't'}, "te", true)
+    utf16_to_utf8(t, []u16{'t', 'e', 0, 's', 't', 0}, "te", true)
 
-    wstring_to_utf8(t, []u16{}, "", true); 
-    wstring_to_utf8(t, []u16{0}, "", true); 
-    wstring_to_utf8(t, []u16{0, 't', 'e', 's', 't'}, "", true); 
-    wstring_to_utf8(t, []u16{0, 't', 'e', 's', 't', 0}, "", true); 
-    wstring_to_utf8(t, []u16{'t', 'e', 's', 't', 0}, "test", true); 
-    wstring_to_utf8(t, []u16{'t', 'e', 0, 's', 't'}, "te", true); 
-    wstring_to_utf8(t, []u16{'t', 'e', 0, 's', 't', 0}, "te", true); 
+    wstring_to_utf8(t, []u16{}, "", true)
+    wstring_to_utf8(t, []u16{0}, "", true)
+    wstring_to_utf8(t, []u16{0, 't', 'e', 's', 't'}, "", true)
+    wstring_to_utf8(t, []u16{0, 't', 'e', 's', 't', 0}, "", true)
+    wstring_to_utf8(t, []u16{'t', 'e', 's', 't', 0}, "test", true)
+    wstring_to_utf8(t, []u16{'t', 'e', 0, 's', 't'}, "te", true)
+    wstring_to_utf8(t, []u16{'t', 'e', 0, 's', 't', 0}, "te", true)
 
     // WARNING: Passing a non-zero-terminated string to wstring_to_utf8 is dangerous, 
     //          as it will go out of bounds looking for a zero. 
     //          It will "fail" or "succeed" by having a zero just after the end of the input string or not.
-    wstring_to_utf8(t, []u16{'t', 'e', 's', 't'}, "test", false); 
-    wstring_to_utf8(t, []u16{'t', 'e', 's', 't', 0}[:4], "test", true); 
-    wstring_to_utf8(t, []u16{'t', 'e', 's', 't', 'q'}[:4], "test", false); 
+    wstring_to_utf8(t, []u16{'t', 'e', 's', 't'}, "test", false)
+    wstring_to_utf8(t, []u16{'t', 'e', 's', 't', 0}[:4], "test", true)
+    wstring_to_utf8(t, []u16{'t', 'e', 's', 't', 'q'}[:4], "test", false)
 }

core/sys/windows/kernel32.odin

@@ -272,6 +272,11 @@ foreign kernel32 {
 	HeapReAlloc :: proc(hHeap: HANDLE, dwFlags: DWORD, lpMem: LPVOID, dwBytes: SIZE_T) -> LPVOID ---
 	HeapFree :: proc(hHeap: HANDLE, dwFlags: DWORD, lpMem: LPVOID) -> BOOL ---
 
+	LocalAlloc :: proc(flags: UINT, bytes: SIZE_T) -> LPVOID ---
+	LocalReAlloc :: proc(mem: LPVOID, bytes: SIZE_T, flags: UINT) -> LPVOID ---
+	LocalFree :: proc(mem: LPVOID) -> LPVOID ---
+
+
 	ReadDirectoryChangesW :: proc(
 		hDirectory: HANDLE,
 		lpBuffer: LPVOID,

core/sys/windows/util.odin

@@ -2,7 +2,7 @@
 package sys_windows
 
 import "core:strings"
-import "core:sys/win32"
+import "core:runtime"
 import "core:intrinsics"
 
 L :: intrinsics.constant_utf16_cstring
@@ -56,16 +56,16 @@ utf8_to_wstring :: proc(s: string, allocator := context.temp_allocator) -> wstri
 	return nil
 }
 
-wstring_to_utf8 :: proc(s: wstring, N: int, allocator := context.temp_allocator) -> (res: string) {
+wstring_to_utf8 :: proc(s: wstring, N: int, allocator := context.temp_allocator) -> (res: string, err: runtime.Allocator_Error) {
 	context.allocator = allocator
 
 	if N <= 0 {
-		return ""
+		return
 	}
 
 	n := WideCharToMultiByte(CP_UTF8, WC_ERR_INVALID_CHARS, s, i32(N), nil, 0, nil, nil)
 	if n == 0 {
-		return ""
+		return
 	}
 
 	// If N == -1 the call to WideCharToMultiByte assume the wide string is null terminated
@@ -73,12 +73,12 @@ wstring_to_utf8 :: proc(s: wstring, N: int, allocator := context.temp_allocator)
 	// also null terminated.
 	// If N != -1 it assumes the wide string is not null terminated and the resulting string
 	// will not be null terminated, we therefore have to force it to be null terminated manually.
-	text := make([]byte, n+1 if N != -1 else n)
+	text := make([]byte, n+1 if N != -1 else n) or_return
 
 	n1 := WideCharToMultiByte(CP_UTF8, WC_ERR_INVALID_CHARS, s, i32(N), raw_data(text), n, nil, nil)
 	if n1 == 0 {
 		delete(text, allocator)
-		return ""
+		return
 	}
 
 	for i in 0..<n {
@@ -87,12 +87,12 @@ wstring_to_utf8 :: proc(s: wstring, N: int, allocator := context.temp_allocator)
 			break
 		}
 	}
-	return string(text[:n])
+	return string(text[:n]), nil
 }
 
-utf16_to_utf8 :: proc(s: []u16, allocator := context.temp_allocator) -> string {
+utf16_to_utf8 :: proc(s: []u16, allocator := context.temp_allocator) -> (res: string, err: runtime.Allocator_Error) {
 	if len(s) == 0 {
-		return ""
+		return "", nil
 	}
 	return wstring_to_utf8(raw_data(s), len(s), allocator)
 }
@@ -216,7 +216,7 @@ get_computer_name_and_account_sid :: proc(username: string) -> (computer_name: s
 	if !res {
 		return "", {}, false
 	}
-	computer_name = utf16_to_utf8(cname_w, context.temp_allocator)
+	computer_name = utf16_to_utf8(cname_w, context.temp_allocator) or_else ""
 
 	ok = true
 	return
@@ -306,7 +306,7 @@ add_user_profile :: proc(username: string) -> (ok: bool, profile_path: string) {
 	if res == false {
 		return false, ""
 	}
-	defer win32.local_free(sb)
+	defer LocalFree(sb)
 
 	pszProfilePath := make([]u16, 257, context.temp_allocator)
 	res2 := CreateProfile(
@@ -318,7 +318,7 @@ add_user_profile :: proc(username: string) -> (ok: bool, profile_path: string) {
 	if res2 != 0 {
 		return false, ""
 	}
-	profile_path = wstring_to_utf8(&pszProfilePath[0], 257)
+	profile_path = wstring_to_utf8(&pszProfilePath[0], 257) or_else ""
 
 	return true, profile_path
 }
@@ -336,7 +336,7 @@ delete_user_profile :: proc(username: string) -> (ok: bool) {
 	if res == false {
 		return false
 	}
-	defer win32.local_free(sb)
+	defer LocalFree(sb)
 
 	res2 := DeleteProfileW(
 		sb,