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* 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>
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Co-authored-by: Étienne Barrié <etienne.barrie@gmail.com>
Co-authored-by: Jean Boussier <jean.boussier@gmail.com>
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It is for dynamically loading, useless for statically linked objects.
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A few extension libraries, to hide all symbols except for necessary to
load, hardcode the symbols to be exported in symbol list files for
linker without even checking by `have_func`. As a workaround for such
libraries, retain `ruby_abi_version` symbol always even in released
versions for now.
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Notes:
Merged: https://github.com/ruby/ruby/pull/6599
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As commented in include/ruby/internal/abi.h, since teeny versions of
Ruby should guarantee ABI compatibility, `RUBY_ABI_VERSION` has no role
in released versions of Ruby.
Notes:
Merged: https://github.com/ruby/ruby/pull/6231
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This commit implements Objects on Variable Width Allocation. This allows
Objects with more ivars to be embedded (i.e. contents directly follow the
object header) which improves performance through better cache locality.
Notes:
Merged: https://github.com/ruby/ruby/pull/6117
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Notes:
Merged: https://github.com/ruby/ruby/pull/5810
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This commit implements arrays on Variable Width Allocation. This allows
longer arrays to be embedded (i.e. contents directly follow the object
header) which improves performance through better cache locality.
Notes:
Merged: https://github.com/ruby/ruby/pull/5660
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Make ruby_abi_version have C linkage so that the symbol can be found
in the shared object.
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Header file include/ruby/internal/abi.h contains RUBY_ABI_VERSION which
is the ABI version. This value should be bumped whenever an ABI
incompatible change is introduced.
When loading dynamic libraries, Ruby will compare its own
`ruby_abi_version` and the `ruby_abi_version` of the loaded library. If
these two values don't match it will raise a `LoadError`. This feature
can also be turned off by setting the environment variable
`RUBY_RUBY_ABI_CHECK=0`.
This feature will prevent cases where previously installed native gems
fail in unexpected ways due to incompatibility of changes in header
files. This will force the developer to recompile their gems to use the
same header files as the built Ruby.
In Ruby, the ABI version is exposed through
`RbConfig::CONFIG["ruby_abi_version"]`.
Notes:
Merged: https://github.com/ruby/ruby/pull/5474
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