Change `%08x` to `%016x` because of two reasons:
* `%016x` demonstrates that we can use two or more digits here.
* Currently, many people uses 64-bit environment.
(I'm unsure if object_id is a good example here, though...)
I'm unsure if
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@62091 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
* string.c (str_substr): substring of broken code range string may
be valid or broken. patch by tommy (Masahiro Tomita) at
[ruby-dev:50430] [Bug #14388].
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These casts are guarded. Must be safe to assume alignments.
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* string.c (NONASCII_MASK): should cause preprocess error immediately if the
compiler does not satisfy our assumptions.
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* string.c (rb_str_enumerate_lines): fix out-of-bounds access when
record separator is longer than the last element. [Bug #14257]
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Don't assume long long == 8 bytes.
If you can assume C99, there are macros named UINT64_C and
such for appropriate integer literal suffixes.
If you can't, no way but do a bitwise or.
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* string.c (rb_str_enumerate_lines): should chomp record separator
only, but not a newline, at the end of the receiver as well as
middle, if the separator is given.
[ruby-core:84552] [Bug #14257]
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* string.c (str_undump): use rb_enc_find_index2 to find encoding
by unterminated string. check the format before encoding name.
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An #ifdef was missing in r60748 and build broke on systems without
crypt_r().
20171112T162503Z.fail.html.gz
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Use ALLOCV to allocate struct crypt_data for slightly cleaner and less
error-prone code. It is currently possible it leaks when an invalid
argument is passed to String#crypt or rb_str_new_cstr() fails to
allocate memory.
SIZEOF_CRYPT_DATA macro in missing/crypt.h is removed since it is not
used any longer.
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* string.c: [DOC] remove a misleading call-seq for String#concat,
which suggests that all arguments must be Integers in this case;
also clarify in the example that the receiver is modified;
fix grammar for String#<<; move references to the end.
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* string.c (rb_str_prepend_multi): Prepend the string without generating
temporary String object if only one argument is given.
This is very similar with https://github.com/ruby/ruby/pull/1634
String#prepend -> 47.5 % up
[Fix GH-1670] [ruby-core:82195] [Bug #13773]
* Before
String#prepend 1.517M (± 1.8%) i/s - 7.614M in 5.019819s
* After
String#prepend 2.236M (± 3.4%) i/s - 11.234M in 5.029716s
* Test code
require 'benchmark/ips'
Benchmark.ips do |x|
x.report "String#prepend" do |loop|
loop.times { "!".prepend("hello") }
end
end
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Split String#<< and String#concat docs to reflect single and multiple
arguments
patched by MSP-Greg [fix GH-1614]
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This patch will add pre-allocation in string interpolation.
By this, unecessary capacity resizing is avoided.
For small strings, optimized `rb_str_resurrect` operation is
faster, so pre-allocation is done only when concatenated strings
are large. `MIN_PRE_ALLOC_SIZE` was decided by experimenting with
local machine (x86_64-apple-darwin 16.5.0, Apple LLVM version
8.1.0 (clang - 802.0.42)).
String interpolation will be faster around 72% when large string is created.
* Before
```
Calculating -------------------------------------
Large string interpolation
1.276M (± 5.9%) i/s - 6.358M in 5.002022s
Small string interpolation
5.156M (± 5.5%) i/s - 25.728M in 5.005731s
```
* After
```
Calculating -------------------------------------
Large string interpolation
2.201M (± 5.8%) i/s - 11.063M in 5.043724s
Small string interpolation
5.192M (± 5.7%) i/s - 25.971M in 5.020516s
```
* Test code
```ruby
require 'benchmark/ips'
Benchmark.ips do |x|
x.report "Large string interpolation" do |t|
a = "Hellooooooooooooooooooooooooooooooooooooooooooooooooooo"
b = "Wooooooooooooooooooooooooooooooooooooooooooooooooooorld"
t.times do
"#{a}, #{b}!"
end
end
x.report "Small string interpolation" do |t|
a = "Hello"
b = "World"
t.times do
"#{a}, #{b}!"
end
end
end
```
[Fix GH-1626]
From: Nao Minami <south37777@gmail.com>
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* string.c (rb_strseq_index): refactor and avoid
call of str_strlen() when offset == 0.
it will improve performance of String#index and #include?
* benchmark/bm_string_index.rb: benchmark for this change
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* string.c (str_succ): clear coderange cache when no alpha-numeric
character case, carried part may become ASCII-only.
[ruby-core:83062] [Bug #13952]
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* string.c (rb_str_split): return duplicated receiver, when no
splits. patched by tompng (tomoya ishida) in [ruby-core:82911],
and the test case by Seiei Miyagi <hanachin@gmail.com>.
[Bug#13925] [Fix GH-1705]
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* compile.c (iseq_compile_each0): insert to_s method call, so that
refinements activated at the caller should take place.
[Feature #13812]
* insns.def (tostring): fix up converted object to a string,
infect and fallback.
* insns.def (branchiftype): new instruction for conversion.
branches if TOS is an instance of the given type.
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* string.c (rb_enc_str_scrub): enc can differ from the actual
encoding of the string, the cached coderange is useless then.
[ruby-core:82674] [Bug #13874]
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