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Integers out of 32 bit range will be allocated in the heap.
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Favor pointer means encode NaN boxed values to keep pointer values
unmodified, to reduce the cost of far frequent pointer value retrievals.
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ref: #5564
```console
% cc -pedantic -S -Iinclude -DMRB_NO_PRESYM -o- src/array.c > /dev/null
In file included from src/array.c:7:
In file included from include/mruby.h:115:
In file included from include/mruby/value.h:204:
include/mruby/boxing_word.h:133:1: warning: must specify at least one argument for '...' parameter of variadic macro [-Wgnu-zero-variadic-macro-arguments]
mrb_static_assert(sizeof(mrb_value) == sizeof(union mrb_value_));
^
include/mruby.h:109:108: note: expanded from macro 'mrb_static_assert'
mrb_static_assert_expand(mrb_static_assert_selector(__VA_ARGS__, mrb_static_assert2, mrb_static_assert1)(__VA_ARGS__))
^
include/mruby.h:100:10: note: macro 'mrb_static_assert_selector' defined here
# define mrb_static_assert_selector(a, b, name, ...) name
^
1 warning generated.
```
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Adding `MRB_WORDBOX_NO_FLOAT_TRUNCATE` to the build configuration in 32-bit CPU mode had a double definition.
```console
% cat myconf.rb
MRuby::Build.new do
toolchain "clang"
defines << "MRB_WORDBOX_NO_FLOAT_TRUNCATE"
cc.flags << "-m32"
linker.flags << "-m32"
enable_debug
end
% rake CONFIG=myconf.rb
CPP src/array.c -> build/host/src/array.pi
In file included from /var/tmp/mruby/src/array.c:7:
In file included from /var/tmp/mruby/include/mruby.h:115:
In file included from /var/tmp/mruby/include/mruby/value.h:203:
/var/tmp/mruby/include/mruby/boxing_word.h:11:10: warning:
'MRB_WORDBOX_NO_FLOAT_TRUNCATE' macro redefined [-Wmacro-redefined]
# define MRB_WORDBOX_NO_FLOAT_TRUNCATE
^
<command line>:3:9: note: previous definition is here
#define MRB_WORDBOX_NO_FLOAT_TRUNCATE 1
^
1 warning generated.
...SNIP...
```
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The number of registers used is reduced.
Also, previously `R6` and` R7` were used, which exceeded the limit of `new_irep.nregs = 6`.
This could cause the VM stack to overrun.
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Preparation for:
* 64 bit integer with NaN Boxing
* Favor pointer NaN Boxing
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WIP code was mistakenly committed.
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Make `mrb_static_assert()` a variable argument
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`mrb_static_assert()` extends the macro function to take one or two arguments.
If the argument is other than that, an error will occur.
References:
- static_assert のメッセージ省略を許可 - cpprefjp C++日本語リファレンス
https://cpprefjp.github.io/lang/cpp17/extending_static_assert.html
- c - Overloading Macro on Number of Arguments - Stack Overflow
https://stackoverflow.com/a/11763277
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Added testing support for cross-MinGW builds.
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This adds a build_config that will cross-build a Windows executable
using the MinGW cross-compiler and will also run the unit (i.e.
'rake test') using Wine.
For this to work, I made some modifications to the underlying test
scripts as well as some minor changes to a couple of the tests
themselves.
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Since we have added several new instructions.
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These instructions call methods of the receiver.
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* `R(a)` -> `R[a]`
* `Pool(a)` -> `Pool[a]`
* `Syms(a)` -> `Syms[a]`
* `Irep(a)` -> `Irep[a]`
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mruby/dependabot/github_actions/actions/checkout-2.3.5
build(deps): bump actions/checkout from 2.3.4 to 2.3.5
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Bumps [actions/checkout](https://github.com/actions/checkout) from 2.3.4 to 2.3.5.
- [Release notes](https://github.com/actions/checkout/releases)
- [Changelog](https://github.com/actions/checkout/blob/main/CHANGELOG.md)
- [Commits](https://github.com/actions/checkout/compare/v2.3.4...v2.3.5)
---
updated-dependencies:
- dependency-name: actions/checkout
dependency-type: direct:production
update-type: version-update:semver-patch
...
Signed-off-by: dependabot[bot] <[email protected]>
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Fix a syntax error in commented-out code
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By uncommenting the line changed by this commit, `ruby -c build_config/default.rb` complains of a syntax error due to the illegally nested double quotes
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1024 was too big. Some deep recursion could not be detected before
actual stack overflow.
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Since `s2` is `NULL` on top-level, it will be an error. No need to
generate strict bytecode.
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Fix grammar in doc/guides/mrbgems.md
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Need to add `n` because the stack will be shifted in the `mrb_funcall`.
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take-cheeze-exc_mesg
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The Difference
Since Ruby1.9, the keyword arguments were emulated by Ruby using the hash
object at the bottom of the arguments. But we have gradually moved toward
keyword arguments separated from normal (positinal) arguments.
At the same time, we value compatibility, so that Ruby3.0 keyword
arguments are somewhat compromise. Basically, keyword arguments are
separated from positional arguments, except when the method does not
take any formal keyword arguments, given keyword arguments (packed
in the hash object) are considered as the last argument.
And we also allow non symbol keys in the keyword arguments. In that
case, those keys are just passed in the `**` hash (or raise
`ArgumentError` for unknown keys).
The Instruction Changes
We have changed `OP_SEND` instruction. `OP_SEND` instruction used to
take 3 operands, the register, the symbol, the number of (positional)
arguments. The meaning of the third operand has been changed. It is now
considered as `n|(nk<<4)`, where `n` is the number of positional
arguments, and `nk` is the number of keyword arguments, both occupies
4 bits in the operand.
The number `15` in both `n` and `nk` means variable sized arguments are
packed in the object. Positional arguments will be packed in the array,
and keyword arguments will be packed in the hash object. That means
arguments more than 14 values are always packed in the object.
Arguments information for other instructions (`OP_SENDB` and `OP_SUPER`)
are also changed. It works as the third operand of `OP_SEND`. the
difference between `OP_SEND` and `OP_SENDB` is just trivial. It assigns
`nil` to the block hidden arguments (right after arguments).
The instruction `OP_SENDV` and `OP_SENDVB` are removed. Those
instructions are replaced by `OP_SEND` and `OP_SENDB` respectively with
the `15` (variable sized) argument information.
Calling Convention
When calling a method, the stack elements shall be in the order of the
receiver of the method, positional arguments, keyword arguments and the
block argument. If the number of positional or keyword arugument (`n` or
`nk`) is zero, corresponding arguments will be empty. So when `n=0` and
`nk=0` the stack layout (from bottom to top) will be:
+-----------------------+
| recv | block (or nil) |
+-----------------------+
The last elements `block` should be explicitly filled before `OP_SEND`
or assigned to `nil` by `OP_SENDB` internally. In other words, the
following have exactly same behavior:
OP_SENDB clears `block` implicitly:
```
OP_SENDB reg sym 0
```
OP_SEND clears `block` implicitly:
```
OP_LOADNIL R2
OP_SEND R2 sym 0
```
When calling a method with only positional arguments (n=0..14) without
keyword arguments, the stack layout will be like following:
+--------------------------------------------+
| recv | arg1 | ... | arg_n | block (or nil) |
+--------------------------------------------+
When calling a method with arguments packed in the array (n=15) which
means argument splat (*) is used in the actual arguments, or more than
14 arguments are passed the stack layout will be like following:
+-------------------------------+
| recv | array | block (or nil) |
+-------------------------------+
The number of the actual arguments is determined by the length of the
argument array.
When keyword arguments are given (nk>0), keyword arguments are passed
between positional arguments and the block argument. For example, when
we pass one positional argument `1` and one keyword argument `a: 2`,
the stack layout will be like:
+------------------------------------+
| recv | 1 | :a | 2 | block (or nil) |
+------------------------------------+
Note that keyword arguments consume `2*nk` elements in the stack when
`nk=0..14` (unpacked).
When calling a method with keyword arguments packed in the hash object
(nk=15) which means keyword argument splat (**) is used or more than
14 keyword arguments in the actual arguments, the stack layout will
be like:
+------------------------------+
| recv | hash | block (or nil) |
+------------------------------+
Note for mruby/c
When mruby/c authors try to support new keyword arguments, they need
to handle the new meaning of the argument information operand. If they
choose not to support keyword arguments in mruby/c, it just raise
error when `nk` (taken by `(c>>4)&0xf`) is not zero. And combine
`OP_SENDV` behavior with `OP_SEND` when `n` is `15`.
If they want to support keyword arguments seriously, contact me at
<[email protected]> or `@yukihiro_matz`. I can help you.
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pre-commit autoupdate
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https://pre-commit.com/index.html#pre-commit-autoupdate
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Partially allow overriding of `String#[]` methods
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Fix typo for `OP_SETIDX`
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This is for the purpose of supporting `Regexp`.
- configuration and build
```console
% cat regexp_config.rb
MRuby::Lockfile.disable
MRuby::Build.new do
toolchain "clang"
enable_debug
gem core: "mruby-bin-mruby"
gem core: "mruby-print"
gem mgem: "mruby-onig-regexp"
#gem mgem: "mruby-regexp-pcre"
end
% rake MRUBY_CONFIG=regexp_config.rb
```
- mruby HEAD (bec074e)
```console
% build/host/bin/mruby -e 'p "abcdefg"[/.(?=...$)/]'
-e:1: can't convert OnigRegexp into Integer (TypeError)
```
- with this patch
```console
% build/host/bin/mruby -e 'p "abcdefg"[/.(?=...$)/]'
"d"
```
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Existing call stack depth checks are unified into this check in
`cipush()`. The maximum depth is now specified by `MRB_CALL_LEVEL_MAX`
(the default is 512). The older `MRB_FUNCALL_DEPTH_MAX` is no longer
used.
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