ref. #5613
I checked with Valgrind, and the methods that can cause use-after-free are `Array#rotate`, `Array#rotate!`, and `String#byteslice`.
Since `String#rindex` uses `RSTRING_LEN()` indirectly inside the function, no reference to the out-of-bounds range is generated.
Allow void expression on some places e.g. right hand of `rescue`
modifier. In addition, checks added on some places, e.g. left hand of
logical operators.
Previously, it always pointed to the highest scope as the location of the error.
- example code `code.rb`
```ruby
huge_num = "1" + "0" * 300; eval <<CODE, nil, "test.rb", 1
class Object
module A
#{huge_num}
end
end
CODE
```
- Before this patch
```console
% bin/mruby code.rb
test.rb:1: integer too big
trace (most recent call last):
[1] code.rb:1
code.rb:1:in eval: codegen error (ScriptError)
```
- After this patch
```console
% bin/mruby code.rb
test.rb:3: integer too big
trace (most recent call last):
[1] code.rb:1
code.rb:1:in eval: codegen error (ScriptError)
```
Make "N for M" into the form "given N, expected M".
As I worked, I noticed that the `argnum_error()` function had a part to include the method name in the message.
I think this part is no longer needed by https://github.com/mruby/mruby/pull/5394.
- Before this patch
```console
% bin/mruby -e '[1, 2, 3].each 0'
trace (most recent call last):
[1] -e:1
-e:1:in each: 'each': wrong number of arguments (1 for 0) (ArgumentError)
```
- After this patch
```console
% bin/mruby -e '[1, 2, 3].each 0'
trace (most recent call last):
[1] -e:1
-e:1:in each: wrong number of arguments (given 1, expected 0) (ArgumentError)
```
If the preprocessor check part is only `__clang__`, CI's such as `Ubuntu-2004-clang` will fail to compile.
This is why we limited the addition to FreeBSD and OpenBSD, which have `clang++` in their base systems.
DragonFly BSD and NetBSD have GCC built into their base systems, so nothing is changed.
The `__id__` method implemented in the C function has `MRB_ARGS_NONE()` specified, but it is also effective in the following cases.
```ruby
p nil.__id__ opts: 1 rescue p :a
p nil.method(:__id__).call 1 rescue p :b
p nil.method(:__id__).call opts: 1 rescue p :c
p nil.method(:__id__).to_proc.call 1 rescue p :d
p nil.method(:__id__).to_proc.call opts: 1 rescue p :e
p nil.method(:__id__).unbind.bind_call nil, 1 rescue p :f
p nil.method(:__id__).unbind.bind_call nil, opts: 1 rescue p :g
p nil.__send__ :__id__, 1 rescue p :h
p nil.__send__ :__id__, opts: 1 rescue p :i
```
After applying this patch, all items will output symbols in the same way as CRuby.
For this purpose, add `MRB_PROC_NOARG` to `struct RProc::flags`.
Calling the `Method#{parameters,source_location}` method on a static `Proc` object resulted in `SIGSEGV`.
The trigger is https://github.com/mruby/mruby/pull/5402.
The original implementation of the `Method#{parameters,source_location}` method was to temporarily rewrite the object and then call the method of the same name in `Proc`.
Rewriting of objects placed in the ROM section by #5402 above is prohibited by hardware such as the CPU.
This caused a `SIGSEGV`.
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.
Yukihiro "Matz" Matsumoto