It is available by default in environments where `__unix__` is defined.
Other environments are enabled by defining `MRB_WITH_IO_PREAD_PWRITE`
(requires an implementation of `pread()` and `pwrite()` functions).
In any case, you can disable it by defining
`MRB_WITHOUT_IO_PREAD_PWRITE`.
What I intended to fix in #4869 was a patch for an old MinGW.
Recent MinGWs have their own `mkstemp()` function.
I knew this after checking the patch #4903.
The binary sizes (gems are only `mruby-bin-mruby`) are reduced slightly in
my environment than before the introduction of new specifiers/modifiers
(5116789a) with this change.
------------+-------------------+-------------------+--------
BINARY | BEFORE (5116789a) | AFTER (This PR) | RATIO
------------+-------------------+-------------------+--------
mruby | 593416 bytes | 593208 bytes | -0.04%
libmruby.a | 769048 bytes | 767264 bytes | -0.23%
------------+-------------------+-------------------+--------
BTW, I accidentally changed `tasks/toolchains/visualcpp.rake` at #4613,
so I put it back.
- I think "Info" is used only to `skip`, so change to "Skip".
- Changed the default value of `assert` and specify the argument explicitly
at the caller of `assert` because it is unnatural "Assertion failed" is
output even though the assertion doesn't fail.
== Example:
def assert_foo(exp, act)
assert do
assert_equal exp[0], act[0]
assert_equal exp[1], act[1]
end
end
def assert_bar(exp, act)
assert do
skip
end
end
def assert_baz(exp, act)
assert do
assert_equal exp, act
assert_bar exp, act
end
end
assert 'test#skip_in_nested_assert' do
assert_baz 1, 1
end
=== Before this patch:
?..
Info: test#skip_in_nested_assert (core)
- Assertion[1]
Info: Assertion failed (core)
- Assertion[1-2]
Skip: Assertion failed (core)
Total: 3
OK: 2
KO: 0
Crash: 0
Warning: 0
Skip: 1
=== After this patch:
???
Skip: test#skip_in_nested_assert (core)
- Assertion[1]
Skip: assert (core)
- Assertion[1-2]
Skip: assert (core)
Total: 3
OK: 0
KO: 0
Crash: 0
Warning: 0
Skip: 3
Because it always allocate new string. Replace with the followings:
- Use `RSRING_PTR` if string is guaranteed to be null-terminated.
- Use `mrb_string_value_cstr` or `mrb_get_args("z")` if return value isn't
modified.
Yukihiro "Matz" Matsumoto