diff options
Diffstat (limited to 'io_buffer.c')
| -rw-r--r-- | io_buffer.c | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/io_buffer.c b/io_buffer.c index 40c12ef5c1..190b67d8ac 100644 --- a/io_buffer.c +++ b/io_buffer.c @@ -496,7 +496,9 @@ io_buffer_for_yield_instance(VALUE _arguments) arguments->instance = io_buffer_for_make_instance(arguments->klass, arguments->string, arguments->flags); - rb_str_locktmp(arguments->string); + if (!RB_OBJ_FROZEN(arguments->string)) { + rb_str_locktmp(arguments->string); + } return rb_yield(arguments->instance); } @@ -510,7 +512,9 @@ io_buffer_for_yield_instance_ensure(VALUE _arguments) rb_io_buffer_free(arguments->instance); } - rb_str_unlocktmp(arguments->string); + if (!RB_OBJ_FROZEN(arguments->string)) { + rb_str_unlocktmp(arguments->string); + } return Qnil; } |