[#79914] [Ruby trunk Bug#13282] opt_str_freeze does not always dedupe — normalperson@...
Issue #13282 has been reported by Eric Wong.
4 messages
2017/03/05
[#80140] [Ruby trunk Feature#13295] [PATCH] compile.c: apply opt_str_freeze to String#-@ (uminus) — shyouhei@...
Issue #13295 has been updated by shyouhei (Shyouhei Urabe).
5 messages
2017/03/13
[#80362] Re: [Ruby trunk Feature#13295] [PATCH] compile.c: apply opt_str_freeze to String#-@ (uminus)
— Eric Wong <normalperson@...>
2017/03/26
[email protected] wrote:
[#80368] Re: [Ruby trunk Feature#13295] [PATCH] compile.c: apply opt_str_freeze to String#-@ (uminus)
— SASADA Koichi <ko1@...>
2017/03/27
On 2017/03/26 15:16, Eric Wong wrote:
[#80205] Re: [ruby-cvs:65166] duerst:r58000 (trunk): clarifiy 'codepoint' in documentation of String#each_codepoint — Eric Wong <normalperson@...>
[email protected] wrote:
4 messages
2017/03/17
[#80213] Re: [ruby-cvs:65166] duerst:r58000 (trunk): clarifiy 'codepoint' in documentation of String#each_codepoint
— Martin J. Dürst <duerst@...>
2017/03/17
Hello Eric,
[#80290] [Ruby trunk Feature#13355] [PATCH] compile.c: optimize literal String range in case/when dispatch — normalperson@...
Issue #13355 has been reported by normalperson (Eric Wong).
4 messages
2017/03/23
[#80410] Re: [Ruby trunk Feature#13355] [PATCH] compile.c: optimize literal String range in case/when dispatch
— Eric Wong <normalperson@...>
2017/03/27
[email protected] wrote:
[#80415] [Ruby trunk Feature#12589] VM performance improvement proposal — vmakarov@...
Issue #12589 has been updated by vmakarov (Vladimir Makarov).
5 messages
2017/03/28
[#80488] [Ruby trunk Feature#12589] VM performance improvement proposal — vmakarov@...
Issue #12589 has been updated by vmakarov (Vladimir Makarov).
4 messages
2017/03/29
[ruby-core:80334] [Ruby trunk Bug#13292] Invalid encodings in UTF-32
From:
usa@...
Date:
2017-03-25 17:01:57 UTC
List:
ruby-core #80334
Issue #13292 has been updated by usa (Usaku NAKAMURA).
Backport changed from 2.2: REQUIRED, 2.3: REQUIRED, 2.4: DONE to 2.2: DONE, 2.3: REQUIRED, 2.4: DONE
ruby_2_2 r58103 merged revision(s) 57816,57817.
----------------------------------------
Bug #13292: Invalid encodings in UTF-32
https://bugs.ruby-lang.org/issues/13292#change-63812
* Author: rbjl (Jan Lelis)
* Status: Closed
* Priority: Normal
* Assignee:
* Target version:
* ruby -v: ruby 2.4.0p0 (2016-12-24 revision 57164) [x86_64-linux]
* Backport: 2.2: DONE, 2.3: REQUIRED, 2.4: DONE
----------------------------------------
Ruby is very strict about valid UTF-8 encodings, which is great.
Strings that encode surrogates or too large codepoints are not valid.
However, in UTF-32, it is possible to encode such values, and Ruby treats them as valid:
Example 1 (too large value)
```
a = [0, 0, 17, 0].pack("C*").force_encoding("UTF-32LE") #=> "\u{110000}"
a.valid_encoding? # => true
```
Example 2 (surrogate)
```
b = [0, 216, 0, 0].pack("C*").force_encoding("UTF-32LE") # => "\uD800"
b.valid_encoding? #=> true
```
The behaviour should be changed to `String#valid_encoding?` reporting `false`
For reference: http://unicode.org/versions/Unicode9.0.0/UnicodeStandard-9.0.pdf (page 71)
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