1
0
Fork 0
mirror of https://github.com/ruby/ruby.git synced 2022-11-09 12:17:21 -05:00
ruby--ruby/test/-ext-/string
John Hawthorn 04bc4c0662 Resize capacity for fstring
When a string is #frozen, it's capacity is resized to fit (if it is much
larger), since we know it will no longer be mutated.

    > puts ObjectSpace.dump(String.new("a"*30, capacity: 1000))
    {"type":"STRING", "class":"0x7feaf00b7bf0", "bytesize":30, "capacity":1000, "value":"...
    > puts ObjectSpace.dump(String.new("a"*30, capacity: 1000).freeze)
    {"type":"STRING", "class":"0x7feaf00b7bf0", "frozen":true, "bytesize":30, "value":"...

(ObjectSpace.dump doesn't show capacity if capacity is equal to bytesize)

Previously, if we dedup into an fstring, using String#-@, capacity would
not be reduced.

    > puts ObjectSpace.dump(-String.new("a"*30, capacity: 1000))
    {"type":"STRING", "class":"0x7feaf00b7bf0", "frozen":true, "fstring":true, "bytesize":30, "capacity":1000, "value":"...

This commit makes rb_fstring call rb_str_resize, the same as
rb_str_freeze does.

Closes: https://github.com/ruby/ruby/pull/2256
2019-06-26 15:01:48 +09:00
..
test_capacity.rb Resize capacity for fstring 2019-06-26 15:01:48 +09:00
test_coderange.rb
test_cstr.rb
test_ellipsize.rb
test_enc_associate.rb
test_enc_str_buf_cat.rb
test_external_new.rb
test_fstring.rb
test_modify_expand.rb
test_nofree.rb
test_normalize.rb
test_qsort.rb
test_rb_str_dup.rb
test_set_len.rb