diff --git a/core/odin/ast/ast.odin b/core/odin/ast/ast.odin
index f2c3e029b..b462a3107 100644
--- a/core/odin/ast/ast.odin
+++ b/core/odin/ast/ast.odin
@@ -553,6 +553,27 @@ unparen_expr :: proc(expr: ^Expr) -> (val: ^Expr) {
 	return
 }
 
+strip_or_return_expr :: proc(expr: ^Expr) -> (val: ^Expr) {
+	val = expr
+	if expr == nil {
+		return
+	}
+	for {
+		inner: ^Expr
+		#partial switch e in val.derived {
+		case ^Or_Return_Expr:
+			inner = e.expr
+		case ^Paren_Expr:
+			inner = e.expr
+		}
+		if inner == nil {
+			break
+		}
+		val = inner
+	}
+	return
+}
+
 Field_Flags :: distinct bit_set[Field_Flag]
 
 Field_Flag :: enum {
@@ -563,7 +584,7 @@ Field_Flag :: enum {
 	Using,
 	No_Alias,
 	C_Vararg,
-	Auto_Cast,
+	Const,
 	Any_Int,
 	Subtype,
 	By_Ptr,
@@ -582,7 +603,7 @@ field_flag_strings := [Field_Flag]string{
 	.Using              = "using",
 	.No_Alias           = "#no_alias",
 	.C_Vararg           = "#c_vararg",
-	.Auto_Cast          = "auto_cast",
+	.Const              = "#const",
 	.Any_Int            = "#any_int",
 	.Subtype            = "#subtype",
 	.By_Ptr             = "#by_ptr",
@@ -596,6 +617,7 @@ field_flag_strings := [Field_Flag]string{
 field_hash_flag_strings := []struct{key: string, flag: Field_Flag}{
 	{"no_alias", .No_Alias},
 	{"c_vararg", .C_Vararg},
+	{"const",    .Const},
 	{"any_int",  .Any_Int},
 	{"subtype",  .Subtype},
 	{"by_ptr",   .By_Ptr},
@@ -616,7 +638,7 @@ Field_Flags_Signature :: Field_Flags{
 	.Using,
 	.No_Alias,
 	.C_Vararg,
-	.Auto_Cast,
+	.Const,
 	.Any_Int,
 	.By_Ptr,
 	.Default_Parameters,
diff --git a/core/odin/parser/parser.odin b/core/odin/parser/parser.odin
index da6530911..39280061f 100644
--- a/core/odin/parser/parser.odin
+++ b/core/odin/parser/parser.odin
@@ -1666,9 +1666,6 @@ is_token_field_prefix :: proc(p: ^Parser) -> ast.Field_Flag {
 	case .Using:
 		advance_token(p)
 		return .Using
-	case .Auto_Cast:
-		advance_token(p)
-		return .Auto_Cast
 	case .Hash:
 		tok: tokenizer.Token
 		advance_token(p)
@@ -2153,7 +2150,7 @@ parse_inlining_operand :: proc(p: ^Parser, lhs: bool, tok: tokenizer.Token) -> ^
 		}
 	}
 
-	#partial switch e in ast.unparen_expr(expr).derived_expr {
+	#partial switch e in ast.strip_or_return_expr(expr).derived_expr {
 	case ^ast.Proc_Lit:
 		if e.inlining != .None && e.inlining != pi {
 			error(p, expr.pos, "both 'inline' and 'no_inline' cannot be applied to a procedure literal")