GDScript: Fix crash when base of an attribute is invalid

In attribute expressions (`a.b`) it's possible that the base has an
incorrect syntax and thus become a nullptr expression in the tree. This
commit add the check for this case to fail gracefully instead of
crashing.
This commit is contained in:
George Marques 2021-04-05 11:17:59 -03:00
parent c201b212c7
commit 9ed0f0384c
No known key found for this signature in database
GPG key ID: 046BD46A3201E43D
2 changed files with 7 additions and 1 deletions

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@ -2545,7 +2545,7 @@ GDScriptParser::ExpressionNode *GDScriptParser::parse_attribute(ExpressionNode *
if (for_completion) {
bool is_builtin = false;
if (p_previous_operand->type == Node::IDENTIFIER) {
if (p_previous_operand && p_previous_operand->type == Node::IDENTIFIER) {
const IdentifierNode *id = static_cast<const IdentifierNode *>(p_previous_operand);
Variant::Type builtin_type = get_builtin_type(id->name);
if (builtin_type < Variant::VARIANT_MAX) {