diff --git a/jerry-core/parser/js/js-parser-expr.c b/jerry-core/parser/js/js-parser-expr.c index fbfc42805..bd87d677c 100644 --- a/jerry-core/parser/js/js-parser-expr.c +++ b/jerry-core/parser/js/js-parser-expr.c @@ -302,7 +302,14 @@ parser_emit_unary_lvalue_opcode (parser_context_t *context_p, /**< context */ #if JERRY_ESNEXT parser_check_invalid_new_target (context_p, opcode); - parser_raise_error (context_p, PARSER_ERR_INVALID_LHS_POSTFIX_OP); + if (opcode == CBC_PRE_INCR || opcode == CBC_PRE_DECR) + { + parser_raise_error (context_p, PARSER_ERR_INVALID_LHS_PREFIX_OP); + } + else + { + parser_raise_error (context_p, PARSER_ERR_INVALID_LHS_POSTFIX_OP); + } #else /* JERRY_ESNEXT */ parser_emit_cbc_ext (context_p, CBC_EXT_THROW_REFERENCE_ERROR); #endif /* JERRY_ESNEXT */ diff --git a/jerry-core/parser/js/js-parser-util.c b/jerry-core/parser/js/js-parser-util.c index 23ed8abb3..d7beaba43 100644 --- a/jerry-core/parser/js/js-parser-util.c +++ b/jerry-core/parser/js/js-parser-util.c @@ -1110,6 +1110,10 @@ parser_error_to_string (parser_error_t error) /**< error code */ { return "Invalid left-hand side expression in postfix operation"; } + case PARSER_ERR_INVALID_LHS_PREFIX_OP: + { + return "Invalid left-hand side expression in prefix operation"; + } case PARSER_ERR_INVALID_LHS_FOR_LOOP: { return "Invalid left-hand-side in for-loop"; diff --git a/jerry-core/parser/js/js-parser.h b/jerry-core/parser/js/js-parser.h index d8863ad20..0f0e887e6 100644 --- a/jerry-core/parser/js/js-parser.h +++ b/jerry-core/parser/js/js-parser.h @@ -94,6 +94,7 @@ typedef enum PARSER_ERR_DUPLICATED_PROTO, /**< duplicated __proto__ fields are not allowed */ PARSER_ERR_INVALID_LHS_ASSIGNMENT, /**< invalid LeftHandSide in assignment */ PARSER_ERR_INVALID_LHS_POSTFIX_OP, /**< invalid LeftHandSide expression in postfix operation */ + PARSER_ERR_INVALID_LHS_PREFIX_OP, /**< invalid LeftHandSide expression in prefix operation */ PARSER_ERR_INVALID_LHS_FOR_LOOP, /**< invalid LeftHandSide in for-loop */ #endif /* JERRY_ESNEXT */ PARSER_ERR_DELETE_IDENT_NOT_ALLOWED, /**< identifier delete is not allowed in strict mode */