The enumEntriesIntrinsicMultipleEnums.kt test was supposed to check that
JVM backend generates 3 `$EntriesIntrinsicMappings` classes: for X, for
Y, and for Z. Mappings classes are generated for enums without
`entries`, i.e. Kotlin enums compiled without `EnumEntries` language
feature, and Java enums. The test incorrectly _enabled_ the language
feature for X though, and `$EntriesIntrinsicMappings` for X was
generated anyway because of KT-61208.
To keep the original intention of the test, I'm disabling the language
feature for X, so that it will be considered as enum without `entries`.
KT-61208 will be fixed in a separate commit (with separate tests).
The boxInline and bytecodeText tests changed their meaning when language
feature EnumEntries started to be enabled by default, so those changes
are a continuation to ebd43fc8c0. The behavior did not change after
enabling the feature, once again because of KT-61208.
Also, remove obsolete error suppressions which are no longer needed
after 64c8ce18a0.
This change allows to revert adding `WITH_STDLIB` directive
to tests which happened at `a9343aeb`.
Co-authored-by: Alexander Udalov <Alexander.Udalov@jetbrains.com>
* Fix objects in inline functions and lambdas:
* Add common lowerings used in K/JS and K/Native
* Fix inline lambda call detection logic in presence of additional casts
Merge-request: KT-MR-8791
Merged-by: Svyatoslav Kuzmich <svyatoslav.kuzmich@jetbrains.com>
This inconsistency is present due to not using the `// WITH_STDLIB`
in the above tests. When K1 creates the enum, it tries to generate
`entries()`, and for that it tries to load `kotlin.enums.EnumEntries`,
but this is actually an unresolved reference. K1 silently swallows it,
and proceeds.
The reason K2 doesn't fail is that in order to generate `entries()` it
simply creates the necessary `ConeClassLikeType` with the desired
`classId` instead of loading the whole `ClassDescriptor`.
The reason we can still observe `$ENTRIES` and `$entries` in K1
is because they are generated during the JVM codegen, and it
only checks if the `EnumEntries` language feature is supported. It
doesn't check if the `entries` property has really existed in IR
(by this time it's expected to have already been lowered to the
`get-entries` function - that's why "has ... existed").
The reason why the codegen doesn't fail when working with
`kotlin.enums.EnumEntries` is because it creates its
own `IrClassSymbol`.
^KT-55840 Fixed
Merge-request: KT-MR-8727
Merged-by: Nikolay Lunyak <Nikolay.Lunyak@jetbrains.com>
Ensure that when .entries is accessed from an inline function body
or lambda argument, EntriesMapping are properly generated and used
without excessive mappings and duplicated fields
#KT-53236
We are going to deprecate `WITH_RUNTIME` directive. The main reason
behind this change is that `WITH_STDLIB` directive better describes
its meaning, specifically it will add kotlin stdlib to test's classpath.
The condition on the relationship between the current class and the type
of the receiver for protected members was the opposite of what the JVMS
says, and yet somehow mostly worked?
#KT-48331 Fixed
#KT-20542 Fixed
In the old backend, this was unnecessary because nested objects would
reference their lambdas' captures through the original this$0. On
JVM_IR, using loose capture fields means a name/descriptor clash can
occur on any level of nesting, not just the top.
Note that KT-30696 is fixed only in the single-module case, and KT-42012
is not fixed fully (see KT-44855).
#KT-30041
#KT-30629
#KT-30696
#KT-30933
#KT-32351
#KT-32749
#KT-38849
#KT-42012
#KT-42990
#KT-44234
#KT-44529
#KT-44631
#KT-44647
This is a hack to work around the fact that type mappings should not be
inherited by inlining contexts for lambdas called from anonymous
objects. As the lambda can call the inline function again, this could
produce a reference to the original object, which is remapped to a new
type in the parent context. Unfortunately, there are many redundant
`MethodRemapper`s between the lambda and the class file, so simply
editing `TypeRemapper` does not work. Hence, this hack. For now.
(Issue found by compiling IntelliJ IDEA BTW.)
All tests on anonymous objects should use the NO_CHECK_LAMBDA_INLINING
directive, since the test framework can't tell an anonymous object from
a lambda and checking that anonymous objects are "inlined" makes no
sense.
When we inline an anonymous object which captures something such as
crossinline values or reified parameters, we copy and transform its
metadata in `AnonymousObjectTransformer.transformMetadata`. Basically we
read the metadata of the original class, add a minor protobuf extension
and write it to the new class.
This also includes copying the string table. We read the string table
into `JvmNameResolver` (a representation of string table used in
deserialization), then construct a `JvmStringTable` (a representation
used in _serialization_) and then write it back.
There's a few optimizations in the string table representation in JVM
metadata which allow to store less strings and thus take less space. See
`StringTableTypes.Record` in `jvm_metadata.proto` for more information.
One of the optimizations `Record.range` allows to avoid storing the same
record many times in a sequence. For example, if we have N different
strings in the string table but none of them require any operation (such
as substring, char replacement, etc.), then we only store the record
with all default values (no operation, no predefined string, etc.) and
set its `range` to N. Upon reading such optimized record list in
`JvmNameResolver`, we "expand" it back to normal, so that we could index
it quickly and figure out what operation needs to be performed on each
string from the string table.
The problem was that when we expanded this list, we didn't set the range
of the expanded record entry to 1. So each record in
`JvmNameResolver.records` still has its original range. It doesn't cause
any problems most of the time because the range in this expanded list is
almost unused. However, when copying/transforming metadata for anonymous
objects, we mistakenly passed this expanded list with incorrect ranges
to `JvmStringTable`. So the metadata in the copied anonymous object
ended up being incorrect: each record now was present the number of
times equal to its range. Copying such metadata once again led to
another multiplication of the record list size. Multiple copies resulted
in exponential increase in memory consumption and quickly led to OOM.
For the fix, we now take the original, unexpanded list of records when
creating `JvmStringTable` out of `JvmNameResolver` for transformation of
anonymous object metadata.
Note that another possible fix would be to make range for each record in
`JvmNameResolver.records` equal to 1. This is undesirable though, since
then we'd need to copy each `JvmProtoBuf.StringTableTypes.Record`
instance, of which there could be many, and use some memory for no
apparent gain (since ranges in that expanded list are now not used at
all).
#KT-38197 Fixed
The fields containing crossinline lambdas should be package-private to
avoid generating synthetic accessors, which break object regeneration.
Note that the inline methods cannot actually be called, as call sites
will attempt to read the captured lambda from a field through a *copy*
of the local containing the object, so these reads will not be inlined,
causing an exception at runtime:
inline fun f(crossinline g: () -> Unit) = object : I {
inline fun h() = g()
// effectively `val tmp = this; return tmp.$g()`:
override fun run() = h()
}
f {}.run() // NoSuchFieldError: $g
This particular example can be fixed by reusing locals for receiver
parameters in IrInlineCodegen, but explicitly assigning `this` to
another variable and calling an inline method on it will break it again.
(This is only applicable to the JVM_IR backend, as the non-IR one fails
to generate `f` at all for some other reason.)
Artem Kobzar