Merge pull request #3791 from stevenjohnstone/bug/3790

Author: kddnewton

src/prism.c

@@ -12762,7 +12762,7 @@ parse_target(pm_parser_t *parser, pm_node_t *target, bool multiple, bool splat_p
                     return UP(pm_local_variable_target_node_create(parser, &message_loc, name, 0));
                 }
 
-                if (*call->message_loc.start == '_' || parser->encoding->alnum_char(call->message_loc.start, call->message_loc.end - call->message_loc.start)) {
+                if (peek_at(parser, call->message_loc.start) == '_' || parser->encoding->alnum_char(call->message_loc.start, call->message_loc.end - call->message_loc.start)) {
                     if (multiple && PM_NODE_FLAG_P(call, PM_CALL_NODE_FLAGS_SAFE_NAVIGATION)) {
                         pm_parser_err_node(parser, (const pm_node_t *) call, PM_ERR_UNEXPECTED_SAFE_NAVIGATION);
                     }
@@ -16118,7 +16118,7 @@ parse_pattern(pm_parser_t *parser, pm_constant_id_list_t *captures, uint8_t flag
 static void
 parse_pattern_capture(pm_parser_t *parser, pm_constant_id_list_t *captures, pm_constant_id_t capture, const pm_location_t *location) {
     // Skip this capture if it starts with an underscore.
-    if (*location->start == '_') return;
+    if (peek_at(parser, location->start) == '_') return;
 
     if (pm_constant_id_list_includes(captures, capture)) {
         pm_parser_err(parser, location->start, location->end, PM_ERR_PATTERN_CAPTURE_DUPLICATE);