Correct union type checking for constants

src/check_expr.cpp

@@ -821,11 +821,13 @@ gb_internal i64 check_distance_between_types(CheckerContext *c, Operand *operand
 		}
 	}
 
+	if (c != nullptr) {
 		if (is_type_enum(dst) && are_types_identical(dst->Enum.base_type, operand->type)) {
 			if (c->in_enum_type) {
 				return 3;
 			}
 		}
+	}
 
 
 	{
@@ -3590,12 +3592,8 @@ gb_internal void check_cast(CheckerContext *c, Operand *x, Type *type, bool forb
 		Type *final_type = type;
 		if (is_const_expr && !is_type_constant_type(type)) {
 			if (is_type_union(type)) {
-				if (is_type_union_constantable(type)) {
-
-				} else {
 				convert_to_typed(c, x, type);
 			}
-			}
 			final_type = default_type(x->type);
 		}
 		update_untyped_expr_type(c, x->expr, final_type, true);
@@ -8033,62 +8031,8 @@ gb_internal bool check_call_parameter_mixture(Slice<Ast *> const &args, char con
 	return Expr_Stmt; \
 }
 
-
+gb_internal ExprKind check_call_expr_as_type_cast(CheckerContext *c, Operand *operand, Ast *call, Slice<Ast *> const &args, Type *type_hint) {
-gb_internal ExprKind check_call_expr(CheckerContext *c, Operand *operand, Ast *call, Ast *proc, Slice<Ast *> const &args, ProcInlining inlining, Type *type_hint) {
+	GB_ASSERT(operand->mode == Addressing_Type);
-	if (proc != nullptr &&
-	    proc->kind == Ast_BasicDirective) {
-		ast_node(bd, BasicDirective, proc);
-		String name = bd->name.string;
-		if (
-		    name == "location" || 
-		    name == "exists" ||
-		    name == "assert" || 
-		    name == "panic" || 
-		    name == "defined" || 
-		    name == "config" || 
-		    name == "load" ||
-		    name == "load_directory" ||
-		    name == "load_hash" ||
-		    name == "hash" ||
-		    name == "caller_expression"
-		) {
-			operand->mode = Addressing_Builtin;
-			operand->builtin_id = BuiltinProc_DIRECTIVE;
-			operand->expr = proc;
-			operand->type = t_invalid;
-			add_type_and_value(c, proc, operand->mode, operand->type, operand->value);
-		} else {
-			error(proc, "Unknown directive: #%.*s", LIT(name));
-			operand->expr = proc;
-			operand->type = t_invalid;
-			operand->mode = Addressing_Invalid;
-			return Expr_Expr;
-		}
-		if (inlining != ProcInlining_none) {
-			error(call, "Inlining operators are not allowed on built-in procedures");
-		}
-	} else {
-		if (proc != nullptr) {
-			check_expr_or_type(c, operand, proc);
-		} else {
-			GB_ASSERT(operand->expr != nullptr);
-		}
-	}
-
-	if (operand->mode == Addressing_Invalid) {
-		CHECK_CALL_PARAMETER_MIXTURE_OR_RETURN("procedure call");
-		for (Ast *arg : args) {
-			if (arg->kind == Ast_FieldValue) {
-				arg = arg->FieldValue.value;
-			}
-			check_expr_base(c, operand, arg, nullptr);
-		}
-		operand->mode = Addressing_Invalid;
-		operand->expr = call;
-		return Expr_Stmt;
-	}
-
-	if (operand->mode == Addressing_Type) {
 	Type *t = operand->type;
 	if (is_type_polymorphic_record(t)) {
 		CHECK_CALL_PARAMETER_MIXTURE_OR_RETURN("polymorphic type construction");
@@ -8174,6 +8118,8 @@ gb_internal ExprKind check_call_expr(CheckerContext *c, Operand *operand, Ast *c
 			}
 			operand->type = t;
 			operand->expr = call;
+
+
 			if (operand->mode != Addressing_Invalid) {
 				update_untyped_expr_type(c, arg, t, false);
 			}
@@ -8182,6 +8128,66 @@ gb_internal ExprKind check_call_expr(CheckerContext *c, Operand *operand, Ast *c
 		}
 	}
 	return Expr_Expr;
+}
+
+
+
+gb_internal ExprKind check_call_expr(CheckerContext *c, Operand *operand, Ast *call, Ast *proc, Slice<Ast *> const &args, ProcInlining inlining, Type *type_hint) {
+	if (proc != nullptr &&
+	    proc->kind == Ast_BasicDirective) {
+		ast_node(bd, BasicDirective, proc);
+		String name = bd->name.string;
+		if (
+		    name == "location" || 
+		    name == "exists" ||
+		    name == "assert" || 
+		    name == "panic" || 
+		    name == "defined" || 
+		    name == "config" || 
+		    name == "load" ||
+		    name == "load_directory" ||
+		    name == "load_hash" ||
+		    name == "hash" ||
+		    name == "caller_expression"
+		) {
+			operand->mode = Addressing_Builtin;
+			operand->builtin_id = BuiltinProc_DIRECTIVE;
+			operand->expr = proc;
+			operand->type = t_invalid;
+			add_type_and_value(c, proc, operand->mode, operand->type, operand->value);
+		} else {
+			error(proc, "Unknown directive: #%.*s", LIT(name));
+			operand->expr = proc;
+			operand->type = t_invalid;
+			operand->mode = Addressing_Invalid;
+			return Expr_Expr;
+		}
+		if (inlining != ProcInlining_none) {
+			error(call, "Inlining operators are not allowed on built-in procedures");
+		}
+	} else {
+		if (proc != nullptr) {
+			check_expr_or_type(c, operand, proc);
+		} else {
+			GB_ASSERT(operand->expr != nullptr);
+		}
+	}
+
+	if (operand->mode == Addressing_Invalid) {
+		CHECK_CALL_PARAMETER_MIXTURE_OR_RETURN("procedure call");
+		for (Ast *arg : args) {
+			if (arg->kind == Ast_FieldValue) {
+				arg = arg->FieldValue.value;
+			}
+			check_expr_base(c, operand, arg, nullptr);
+		}
+		operand->mode = Addressing_Invalid;
+		operand->expr = call;
+		return Expr_Stmt;
+	}
+
+	if (operand->mode == Addressing_Type) {
+		return check_call_expr_as_type_cast(c, operand, call, args, type_hint);
 	}
 
 	if (operand->mode == Addressing_Builtin) {

src/llvm_backend_general.cpp

@@ -3256,7 +3256,7 @@ gb_internal lbAddr lb_add_global_generated_with_name(lbModule *m, Type *type, lb
 	LLVMTypeRef actual_type = lb_type(m, type);
 	if (value.value != nullptr) {
 		LLVMTypeRef value_type = LLVMTypeOf(value.value);
-		GB_ASSERT(lb_sizeof(actual_type) == lb_sizeof(value_type));
+		GB_ASSERT_MSG(lb_sizeof(actual_type) == lb_sizeof(value_type), "%s vs %s", LLVMPrintTypeToString(actual_type), LLVMPrintTypeToString(value_type));
 		actual_type = value_type;
 	}