LibC: Add stubs for wctype and iswctype

Userland/Libraries/LibC/CMakeLists.txt

@@ -56,6 +56,7 @@ set(LIBC_SOURCES
     utime.cpp
     utsname.cpp
     wchar.cpp
+    wctype.cpp
 )
 
 file(GLOB AK_SOURCES CONFIGURE_DEPENDS "../../../AK/*.cpp")

Userland/Libraries/LibC/wchar.h

@@ -16,6 +16,7 @@ __BEGIN_DECLS
 #endif
 
 typedef __WINT_TYPE__ wint_t;
+typedef unsigned long int wctype_t;
 
 size_t wcslen(const wchar_t*);
 wchar_t* wcscpy(wchar_t*, const wchar_t*);

Userland/Libraries/LibC/wctype.cpp

@@ -0,0 +1,24 @@
+/*
+ * Copyright (c) 2021, the SerenityOS developers
+ *
+ * SPDX-License-Identifier: BSD-2-Clause
+ */
+
+#include <AK/Format.h>
+#include <assert.h>
+#include <wctype.h>
+
+extern "C" {
+
+wctype_t wctype(const char*)
+{
+    dbgln("FIXME: Implement wctype()");
+    TODO();
+}
+
+int iswctype(wint_t, wctype_t)
+{
+    dbgln("FIXME: Implement iswctype()");
+    TODO();
+}
+}

Userland/Libraries/LibC/wctype.h

@@ -0,0 +1,16 @@
+/*
+ * Copyright (c) 2021, the SerenityOS developers
+ *
+ * SPDX-License-Identifier: BSD-2-Clause
+ */
+
+#pragma once
+
+#include <wchar.h>
+
+__BEGIN_DECLS
+
+wctype_t wctype(const char* name);
+int iswctype(wint_t wc, wctype_t desc);
+
+__END_DECLS