Fix memory leak when parsing invalid hash symbol

For example:

    10.times do
      100_000.times do
        eval('{"\xC3": 1}')
      rescue EncodingError
      end

      puts `ps -o rss= -p #{$$}`
    end

Before:

    32032
    48464
    66112
    84192
    100592
    117520
    134096
    150656
    167168
    183760

After:

    17120
    17120
    17120
    17120
    18560
    18560
    18560
    18560
    18560
    18560

1 files changed, 4 insertions, 0 deletions

diff --git a/rubyparser.h b/rubyparser.h
index ab55233d6d..59f594bad0 100644
--- a/rubyparser.h
+++ b/rubyparser.h
@@ -1277,6 +1277,7 @@ typedef struct rb_parser_config_struct {
     VALUE (*id2str)(ID id);
     VALUE (*id2sym)(ID x);
     ID (*sym2id)(VALUE sym);
+    ID (*check_id_cstr)(const char *ptr, long len, rb_encoding *enc);
 
     /* String */
     RBIMPL_ATTR_FORMAT(RBIMPL_PRINTF_FORMAT, 2, 3)
@@ -1293,10 +1294,12 @@ typedef struct rb_parser_config_struct {
     VALUE (*str_resize)(VALUE str, long len);
     VALUE (*str_new)(const char *ptr, long len);
     VALUE (*str_new_cstr)(const char *ptr);
+    VALUE (*setup_fake_str)(struct RString *fake_str, const char *name, long len, rb_encoding *enc);
     VALUE (*fstring)(VALUE);
     int (*is_ascii_string)(VALUE str);
     VALUE (*enc_str_new)(const char *ptr, long len, rb_encoding *enc);
     VALUE (*enc_str_buf_cat)(VALUE str, const char *ptr, long len, rb_encoding *enc);
+    int (*enc_str_coderange)(VALUE str);
     VALUE (*str_buf_append)(VALUE str, VALUE str2);
     RBIMPL_ATTR_FORMAT(RBIMPL_PRINTF_FORMAT, 2, 0)
     VALUE (*str_vcatf)(VALUE str, const char *fmt, va_list ap);
@@ -1361,6 +1364,7 @@ typedef struct rb_parser_config_struct {
     void (*encoding_set)(VALUE obj, int encindex);
     int (*encoding_is_ascii8bit)(VALUE obj);
     rb_encoding *(*usascii_encoding)(void);
+    int enc_coderange_broken;
 
     /* Ractor */
     VALUE (*ractor_make_shareable)(VALUE obj);