diff --git a/src/compiler/compiler_internal.h b/src/compiler/compiler_internal.h
index f7f1b7d31..27e4a93e1 100644
--- a/src/compiler/compiler_internal.h
+++ b/src/compiler/compiler_internal.h
@@ -1938,8 +1938,6 @@ extern const char *kw_typekind;
 extern const char *kw_FILE_NOT_FOUND;
 extern const char *kw_IoError;
 
-extern const char *kw_argc;
-extern const char *kw_argv;
 extern const char *kw_at_deprecated;
 extern const char *kw_at_ensure;
 extern const char *kw_at_param;
@@ -1947,23 +1945,16 @@ extern const char *kw_at_pure;
 extern const char *kw_at_require;
 extern const char *kw_at_return;
 extern const char *kw_at_jump;
-extern const char *kw_check_assign;
-extern const char *kw_deprecated;
 extern const char *kw_in;
-extern const char *kw_incr;
 extern const char *kw_inout;
-extern const char *kw_kind;
 extern const char *kw_len;
-extern const char *kw_libc;
 extern const char *kw_main;
 extern const char *kw_mainstub;
 extern const char *kw_nameof;
-extern const char *kw_noinline;
 extern const char *kw_offsetof;
 extern const char *kw_ordinal;
 extern const char *kw_out;
 extern const char *kw_ptr;
-extern const char *kw_pure;
 extern const char *kw_return;
 extern const char *kw_self;
 extern const char *kw_std;
@@ -2370,7 +2361,6 @@ Decl *sema_resolve_method(CompilationUnit *unit, Decl *type, const char *method_
 Decl *sema_find_extension_method_in_list(Decl **extensions, Type *type, const char *method_name);
 bool sema_resolve_type_decl(SemaContext *context, Type *type);
 bool sema_check_type_variable_array(SemaContext *context, TypeInfo *type);
-
 Decl *sema_find_symbol(SemaContext *context, const char *symbol);
 Decl *sema_find_path_symbol(SemaContext *context, const char *symbol, Path *path);
 Decl *sema_find_label_symbol(SemaContext *context, const char *symbol);
diff --git a/src/compiler/sema_name_resolution.c b/src/compiler/sema_name_resolution.c
index 9e126e7c5..362a8a59d 100644
--- a/src/compiler/sema_name_resolution.c
+++ b/src/compiler/sema_name_resolution.c
@@ -31,7 +31,6 @@ static inline bool matches_subpath(Path *path_to_check, Path *path_to_find)
 
 Decl *sema_decl_stack_resolve_symbol(const char *symbol)
 {
-	Decl **members = global_context.decl_stack;
 	Decl **current = global_context.decl_stack_top;
 	Decl **end = global_context.decl_stack_bottom;
 	while (current > end)
@@ -636,6 +635,7 @@ Decl *sema_resolve_method(CompilationUnit *unit, Decl *type, const char *method_
 	return sema_resolve_type_method(unit, type->type, method_name, ambiguous_ref, private_ref);
 }
 
+__attribute__((unused))
 bool sema_check_type_variable_array(SemaContext *context, TypeInfo *type_info)
 {
 	if (!type_info_ok(type_info)) return false;
diff --git a/src/compiler/sema_types.c b/src/compiler/sema_types.c
index 067d58942..f47a94e83 100644
--- a/src/compiler/sema_types.c
+++ b/src/compiler/sema_types.c
@@ -94,7 +94,6 @@ bool sema_resolve_array_like_len(SemaContext *context, TypeInfo *type_info, Arra
 	return true;
 }
 
-// TODO cleanup.
 static inline bool sema_resolve_array_type(SemaContext *context, TypeInfo *type, ResolveTypeKind resolve_type_kind)
 {
 	// Check the underlying type
diff --git a/src/compiler/symtab.c b/src/compiler/symtab.c
index f2ac7dadb..ed68d68f3 100644
--- a/src/compiler/symtab.c
+++ b/src/compiler/symtab.c
@@ -40,9 +40,6 @@ const char *attribute_list[NUMBER_OF_ATTRIBUTES];
 const char *builtin_list[NUMBER_OF_BUILTINS];
 const char *builtin_defines[NUMBER_OF_BUILTIN_DEFINES];
 const char *type_property_list[NUMBER_OF_TYPE_PROPERTIES];
-const char *kw_argc;
-const char *kw_argv;
-const char *kw_at_checked;
 const char *kw_at_deprecated;
 const char *kw_at_ensure;
 const char *kw_at_param;
@@ -50,25 +47,16 @@ const char *kw_at_pure;
 const char *kw_at_require;
 const char *kw_at_return;
 const char *kw_at_jump;
-const char *kw_check_assign;
-const char *kw_deprecated;
-const char *kw_finalize;
 const char *kw_in;
-const char *kw_incr;
-const char *kw_initialize;
 const char *kw_inout;
-const char *kw_kind;
 const char *kw_len;
-const char *kw_libc;
 const char *kw_main;
 const char *kw_mainstub;
 const char *kw_nameof;
-const char *kw_noinline;
 const char *kw_offsetof;
 const char *kw_ordinal;
 const char *kw_out;
 const char *kw_ptr;
-const char *kw_pure;
 const char *kw_return;
 const char *kw_self;
 const char *kw_std;
@@ -143,26 +131,15 @@ void symtab_init(uint32_t capacity)
 	kw_IoError = KW_DEF("IoError");
 
 	type = TOKEN_IDENT;
-	kw_argc = KW_DEF("_$argc");
-	kw_argv = KW_DEF("_$argv");
-	kw_check_assign = KW_DEF("check_assign");
-	kw_deprecated = KW_DEF("deprecated");
-	kw_finalize = KW_DEF("finalize");
 	kw_in = KW_DEF("in");
-	kw_initialize = KW_DEF("initialize");
-	kw_incr = KW_DEF("incr");
 	kw_inout = KW_DEF("inout");
-	kw_libc = KW_DEF("libc");
 	kw_mainstub = KW_DEF("_$main");
 	kw_main = KW_DEF("main");
 	kw_nameof = KW_DEF("nameof");
-	kw_noinline = KW_DEF("noinline");
 	kw_offsetof = KW_DEF("offsetof");
 	kw_ordinal = KW_DEF("ordinal");
 	kw_out = KW_DEF("out");
 	kw_ptr = KW_DEF("ptr");
-	kw_pure = KW_DEF("pure");
-	KW_DEF("returns");
 	kw_self = KW_DEF("self");
 	kw_std = KW_DEF("std");
 	kw_std__core = KW_DEF("std::core");