structs as errors in fallibles

2026-08-08 22:49:31 +02:00
parent e0f1d2d7cb
commit 729488e702
5 changed files with 80 additions and 5 deletions
@@ -3976,19 +3976,20 @@ validate_declarations :: proc(checker: ^Checker) {
 		}
 		if types.is_valid(function.error) && !signature_poisoned {
 			error_type := type_from_syntax(checker, function.error, function.pkg, function.file)
-			error_sum := types.is_enum(error_type, &checker.module.types) ||
-			             types.is_tagged_union(error_type, &checker.module.types)
+			error_channel := types.is_enum(error_type, &checker.module.types) ||
+			                 types.is_struct(error_type, &checker.module.types) ||
+			                 types.is_tagged_union(error_type, &checker.module.types)
 			if function.c_abi {
 				checker.template_diagnostics[function_id] = source.add(
 					checker.diagnostics,
 					function.span,
 					"fallible functions must use 'func', not 'c_func'",
 				)
-			} else if !error_sum {
+			} else if !error_channel {
 				checker.template_diagnostics[function_id] = source.add(
 					checker.diagnostics,
 					function.span,
-					"fallible function error type must be a native enum or tagged union",
+					"fallible function error type must be a native enum, struct, or tagged union",
 				)
 			}
 		}