- mrb_div_int() does integer division in Ruby way (mdiv)
returns mrb_int
- mrb_div_int_value() division with zero div and overflow checks.
returns mrb_value
- remove `lex_strterm_before_heredoc` that does not nest
- remove `all_heredocs` that cannot distinguish nested and followed
here-doc
- replace `lex_strterm` represented by cons list by C struct
- push/pop `lex_strterm` before/after interpolation
that checks if the value is an `Integer` which may be a big integer,
where existing `mrb_ensure_int_type()` checks if the value is an Integer
**and** fits in `mrb_int`.
Users can now switch to their own implementation of GEM.
However, we do not guarantee that this will not be a problem in the current situation.
This may need to be improved in the future.
Normal return of control from the `mrb_sys_fail()` function has unexpected results.
Example: double free, malloc with huge size used as error integer
The following is an example of an actual crash:
```console
% cat crash.rb
def SystemCallError._sys_fail(*a)
nil
end
File.readlink("/404")
% bin/mruby crash.rb
zsh: segmentation fault (core dumped) bin/mruby crash.rb
```
Internal functions can only be called from within the library.
Functions listed in `mruby/internal.h` can be called from:
* core (src/*.c)
* gems (mrbgems/**/*.c)
But not from the application linked with `libmruby`.
Since the possible values of the backtrace are limited to `nil`, `RData`, and `RAray`, they are now stored as object pointers.
This change saves memory by eliminating the need to use instance variables for common exceptions.
ref. #2485
There is no need to limit the type to `struct RString`.
Also, the `MRB_EXC_MESG_STRING_FLAG` flag can be eliminated by checking if `struct RException::mesg` is `NULL` or not.
ref. #2485
To more consistent names.
* mrb_num_plus() -> mrb_num_add()
* mrb_num_minus() -> mrb_num_sub()
Since no one seems to use those functions, there should be no problem.
We added migration macros for compatibility for safety.
- Changed the description to match the order of the changed members.
- Replaced "array of symbols" instead of "array of strings that mean symbols".
- The `mrb_kwargs::optional` member has not been present since the first merge. It is a remnant from development time.
- Removed `const` modifier used in variable declarations in examples. This is not always necessary from a user perspective.
- Added note on the use of `MRB_SYM()`.
resolved#5649
ref. #2485
The `SystemCallError#to_s` method also needed to be modified, but since it has no functional difference from the `Exception#to_s` method, it will be removed.
dearblue