Original issue: https://github.com/ruby/rdoc/issues/1128
The problem is caused by the `# :stopdoc:` directive in `bundled_gems.rb`,
which's scope covers the redefinition of `LoadError`.
Since the goal of `# :stopdoc:` is to hide the documentation of `Gem::BUNDLED_GEMS`,
we can use `# :nodoc:` on it instead.
The man page is clear that every `va_start` call MUST be succeeded by
the corresponding `va_end` call.
So `rb_raise` can't call `rb_exc_raise` before `va_end`, otherwise
`va_end` is never called.
Co-Authored-By: Étienne Barrié <etienne.barrie@gmail.com>
* Use FL_USER0 for ELTS_SHARED
This makes space in RString for two bits for chilled strings.
* Mark strings returned by `Symbol#to_s` as chilled
[Feature #20350]
`STR_CHILLED` now spans on two user flags. If one bit is set it
marks a chilled string literal, if it's the other it marks a
`Symbol#to_s` chilled string.
Since it's not possible, and doesn't make much sense to include
debug info when `--debug-frozen-string-literal` is set, we can't
include allocation source, but we can safely include the symbol
name in the warning message, making it much easier to find the source
of the issue.
Co-Authored-By: Étienne Barrié <etienne.barrie@gmail.com>
---------
Co-authored-by: Étienne Barrié <etienne.barrie@gmail.com>
Co-authored-by: Jean Boussier <jean.boussier@gmail.com>
Previously, it always used stderr. Slight shuffle of the first line
of the crash due to reusing code from rb_bug():
```diff
-Assertion Failed: /ruby/object.c:649:rb_obj_itself:false
+/ruby/object.c:649: Assertion Failed: rb_obj_itself:false
```
Tested locally to confirm that it writes to the file given with
RUBY_CRASH_REPORT. Follow-up for [Feature #19790].
to show unused block warning strictly.
```ruby
class C
def f = nil
end
class D
def f = yield
end
[C.new, D.new].each{|obj| obj.f{}}
```
In this case, `D#f` accepts a block. However `C#f` doesn't
accept a block. There are some cases passing a block with
`obj.f{}` where `obj` is `C` or `D`. To avoid warnings on
such cases, "unused block warning" will be warned only if
there is not same name which accepts a block.
On the above example, `C.new.f{}` doesn't show any warnings
because there is a same name `D#f` which accepts a block.
We call this default behavior as "relax mode".
`strict_unused_block` new warning category changes from
"relax mode" to "strict mode", we don't check same name
methods and `C.new.f{}` will be warned.
[Feature #15554]
[Feature #20205]
The warning now suggests running with --debug-frozen-string-literal:
```
test.rb:3: warning: literal string will be frozen in the future (run with --debug-frozen-string-literal for more information)
```
When using --debug-frozen-string-literal, the location where the string
was created is shown:
```
test.rb:3: warning: literal string will be frozen in the future
test.rb:1: info: the string was created here
```
When resurrecting strings and debug mode is not enabled, the overhead is a simple FL_TEST_RAW.
When mutating chilled strings and deprecation warnings are not enabled,
the overhead is a simple warning category enabled check.
Co-authored-by: Jean Boussier <byroot@ruby-lang.org>
Co-authored-by: Nobuyoshi Nakada <nobu@ruby-lang.org>
Co-authored-by: Jean Boussier <byroot@ruby-lang.org>
Since 730e3b2ce01915c4a98b79bb281b2c38a9ff1131
("Stop exposing `rb_str_chilled_p`"), we noticed a speed loss on a few
benchmarks that are string operations heavy. This is partially due to
routines no longer having the options to inline rb_check_frozen_inline()
in non-LTO builds. Make it an inlining candidate again to recover speed.
Testing this patch on my machine, the fannkuchredux benchmark gets a
1.15 speed-up with YJIT and 1.03 without YJIT.
The warning category should be enabled if we want to call
`Warning.warn`.
This commit speeds up the following benchmark:
```ruby
eval "def test; " +
1000.times.map { "' '.chomp!" }.join(";") + "; end"
def run_benchmark count
i = 0
while i < count
start = Process.clock_gettime(Process::CLOCK_MONOTONIC)
yield
ms = Process.clock_gettime(Process::CLOCK_MONOTONIC) - start
puts "itr ##{i}: #{(ms * 1000).to_i}ms"
i += 1
end
end
run_benchmark(25) do
250.times do
test
end
end
```
On `master` this runs at about 92ms per iteration. With this patch, it
is 7ms per iteration.
[Bug #20573]
[Feature #20205]
Now that chilled strings no longer appear as frozen, there is no
need to offer an API to check for chilled strings.
We however need to change `rb_check_frozen_internal` to no
longer be a macro, as it needs to check for chilled strings.
They were initially made frozen to avoid false positives for cases such
as:
str = str.dup if str.frozen?
But this may cause bugs and is generally confusing for users.
[Feature #20205]
Co-authored-by: Jean Boussier <byroot@ruby-lang.org>
[Feature #20205]
As a path toward enabling frozen string literals by default in the future,
this commit introduce "chilled strings". From a user perspective chilled
strings pretend to be frozen, but on the first attempt to mutate them,
they lose their frozen status and emit a warning rather than to raise a
`FrozenError`.
Implementation wise, `rb_compile_option_struct.frozen_string_literal` is
no longer a boolean but a tri-state of `enabled/disabled/unset`.
When code is compiled with frozen string literals neither explictly enabled
or disabled, string literals are compiled with a new `putchilledstring`
instruction. This instruction is identical to `putstring` except it marks
the String with the `STR_CHILLED (FL_USER3)` and `FL_FREEZE` flags.
Chilled strings have the `FL_FREEZE` flag as to minimize the need to check
for chilled strings across the codebase, and to improve compatibility with
C extensions.
Notes:
- `String#freeze`: clears the chilled flag.
- `String#-@`: acts as if the string was mutable.
- `String#+@`: acts as if the string was mutable.
- `String#clone`: copies the chilled flag.
Co-authored-by: Jean Boussier <byroot@ruby-lang.org>
[Feature #13557]
Setting the backtrace with an array of strings is lossy. The resulting
exception will return nil on `#backtrace_locations`.
By accepting an array of `Backtrace::Location` instance, we can rebuild
a `Backtrace` instance and have a fully functioning Exception.
Co-Authored-By: Étienne Barrié <etienne.barrie@gmail.com>
This frees FL_USER0 on both T_MODULE and T_CLASS.
Note: prior to this, FL_SINGLETON was never set on T_MODULE,
so checking for `FL_SINGLETON` without first checking that
`FL_TYPE` was `T_CLASS` was valid. That's no longer the case.
* YJIT: Lazily push a frame for specialized C funcs
Co-authored-by: Maxime Chevalier-Boisvert <maxime.chevalierboisvert@shopify.com>
* Fix a comment on pc_to_cfunc
* Rename rb_yjit_check_pc to rb_yjit_lazy_push_frame
* Rename it to jit_prepare_lazy_frame_call
* Fix a typo
* Optimize String#getbyte as well
* Optimize String#byteslice as well
---------
Co-authored-by: Maxime Chevalier-Boisvert <maxime.chevalierboisvert@shopify.com>
Before this commit, the test fails with RGENGC_CHECK_MODE enabled:
TestException#test_detailed_message_under_gc_compact_stress [test/ruby/test_exception.rb:1466]:
<"\e[1mfoo (\e[1;4mRuntimeError\e[m\e[1m)\e[m\n" +
"\e[1mbar\e[m\n" +
"\e[1mbaz\e[m"> expected but was
<"\e[1mfoo (\e[1;4mRuntimeError\e[m\e[1m)\e[m\n" +
"\e[1m\x00\x00\x00\x00\x00\x00\x00\e[m">.
`die()` calls `abort()` which always exit as it `SIGABRT`
was received.
This isn't very friendly with systems that automatically
collect crashes as the `%s` parameter will be changed.
when the RUBY_FREE_ON_SHUTDOWN environment variable is set, manually free memory at shutdown.
Co-authored-by: Nobuyoshi Nakada <nobu@ruby-lang.org>
Co-authored-by: Peter Zhu <peter@peterzhu.ca>
For this public API, the callback is declared to take
`(ID, VALUE, st_data_t)`, but it so happens that using
`(st_data_t, st_data_t, st_data_t)` also
type checks, because the underlying type is identical.
Use it as declared and get rid of some casts.
These aren't particularly common, but avoiding the malloc churn
for small types is always nice, and this commit also modernize
and cleanup the TypedData API usage.
This commit adds a new flag RUBY_TYPED_EMBEDDABLE that allows the data
of a TypedData object to be embedded after the object itself. This will
improve cache locality and allow us to save the 8 byte data pointer.
Co-Authored-By: Jean Boussier <byroot@ruby-lang.org>
