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-rw-r--r--string.c15
1 files changed, 10 insertions, 5 deletions
diff --git a/string.c b/string.c
index 25305a4a4d..1fcd3ccc85 100644
--- a/string.c
+++ b/string.c
@@ -194,8 +194,8 @@ fstr_update_callback(st_data_t *key, st_data_t *value, st_data_t arg, int existi
* at next time */
if (rb_objspace_garbage_object_p(str)) {
- str = *fstr;
- goto create_new_fstr;
+ *fstr = Qundef;
+ return ST_DELETE;
}
*fstr = str;
@@ -203,7 +203,6 @@ fstr_update_callback(st_data_t *key, st_data_t *value, st_data_t arg, int existi
}
else {
if (STR_SHARED_P(str)) { /* str should not be shared */
- create_new_fstr:
str = rb_enc_str_new(RSTRING_PTR(str), RSTRING_LEN(str), STR_ENC_GET(str));
OBJ_FREEZE(str);
}
@@ -220,6 +219,8 @@ fstr_update_callback(st_data_t *key, st_data_t *value, st_data_t arg, int existi
VALUE
rb_fstring(VALUE str)
{
+ VALUE ret;
+
Check_Type(str, T_STRING);
if (!frozen_strings)
@@ -228,8 +229,12 @@ rb_fstring(VALUE str)
if (FL_TEST(str, RSTRING_FSTR))
return str;
- st_update(frozen_strings, (st_data_t)str, fstr_update_callback, (st_data_t)&str);
- return str;
+ do {
+ ret = str;
+ st_update(frozen_strings, (st_data_t)str, fstr_update_callback, (st_data_t)&ret);
+ } while (ret != Qundef);
+
+ return ret;
}
static VALUE