1 files changed, 40 insertions, 2 deletions
diff --git a/prism/prism.c b/prism/prism.c
index e7eb967e15..aaad62d739 100644
--- a/prism/prism.c
+++ b/prism/prism.c
@@ -20018,7 +20018,7 @@ typedef struct {
  * This callback is called when the regular expression parser encounters a named
  * capture group.
  */
-void
+static void
 parse_regular_expression_named_capture(const pm_string_t *capture, void *data) {
     parse_regular_expression_named_capture_data_t *callback_data = (parse_regular_expression_named_capture_data_t *) data;
 
@@ -20084,6 +20084,38 @@ parse_regular_expression_named_capture(const pm_string_t *capture, void *data) {
 }
 
 /**
+ * This struct is used to pass information between the regular expression parser
+ * and the error callback.
+ */
+typedef struct {
+    pm_parser_t *parser;
+    const pm_string_t *content;
+    const pm_call_node_t *call;
+} parse_regular_expression_error_data_t;
+
+/**
+ * This callback is called when the regular expression parser encounters a
+ * syntax error.
+ */
+static void
+parse_regular_expression_error(const uint8_t *start, const uint8_t *end, const char *message, void *data) {
+    parse_regular_expression_error_data_t *callback_data = (parse_regular_expression_error_data_t *) data;
+
+    pm_parser_t *parser = callback_data->parser;
+    const pm_string_t *content = callback_data->content;
+    const pm_call_node_t *call = callback_data->call;
+
+    pm_location_t location;
+    if (content->type == PM_STRING_SHARED) {
+        location = (pm_location_t) { .start = start, .end = end };
+    } else {
+        location = call->receiver->location;
+    }
+
+    PM_PARSER_ERR_FORMAT(parser, location.start, location.end, PM_ERR_REGEXP_PARSE_ERROR, message);
+}
+
+/**
  * Potentially change a =~ with a regular expression with named captures into a
  * match write node.
  */
@@ -20096,7 +20128,13 @@ parse_regular_expression_named_captures(pm_parser_t *parser, const pm_string_t *
         .names = { 0 }
     };
 
-    pm_regexp_parse(parser, pm_string_source(content), pm_string_length(content), parse_regular_expression_named_capture, &callback_data);
+    parse_regular_expression_error_data_t error_data = {
+        .parser = parser,
+        .content = content,
+        .call = call
+    };
+
+    pm_regexp_parse(parser, pm_string_source(content), pm_string_length(content), parse_regular_expression_named_capture, &callback_data, parse_regular_expression_error, &error_data);
     pm_constant_id_list_free(&callback_data.names);
 
     if (callback_data.match != NULL) {