Coroutines are a stable feature since 1.3. Version requirement on
suspend functions, or functions mentioning suspend function types in the
signature, was needed to prevent older compilers from reading metadata
that they can't properly use. It's not needed anymore because a newer
metadata version prevents older compilers from reading any metadata
altogether.
Also, computing isSuspendOrHasSuspendTypesInSignature took ~0.5% of
backend time on compilation of intellij (related to KT-48233).
Since IDEA moved most of it's jars to java 11 it's illegal to use them
in our dependencies, so all modules which use `intellijDep()` should
carefully specify which jars they use
Use {de,}capitalizeAsciiOnly and to{Lower,Upper}CaseAsciiOnly where
possible, and stdlib's functions with Locale.US everywhere else.
Otherwise, if the default system locale is Turkish, the capital latin
letter "I" is transformed in toLowerCase to "ı" (see
https://github.com/JetBrains/kotlin/blob/66bc142f92085047a1ca64f9a291f0496e33dd98/libraries/stdlib/jvm/test/text/StringJVMTest.kt#L119),
which for example breaks the codegen for `intArrayOf` in
KT-25400/KT-43405.
Similarly, lower case latin letter "i" is transformed to "İ".
#KT-13631 Fixed
#KT-25400 Fixed
#KT-43405 Fixed
This is needed to provide ability for declaring new implementations of
test generators, based on existing infrastructure, which won't add
dependency on :compiler:tests-common
Also this commit removes implicit dependency on :compiler:tests-common
from :compiler:tests-common-new
Since 1.4.0-dev-8774, we mangle functions returning inline class values,
including functions with return type 'kotlin.Result'. This causes
incompatibility when 1.4 compiler is used with 1.3 (or just some
pre-1.4.0-dev-8774) standard library.
Also, write "message from the future" on functions returning inline
class values indicating that they can be used since compiler version 1.4
(otherwise 1.3 compiler using 1.4 stdlib would fail to find some
@InlineOnly functions such as 'Result.success' and 'Result.failure').
Instead of generating these annotation classes as package-private on
JVM, serialize their metadata to the .kotlin_module file, and load it
when compiling dependent multiplatform modules.
The problem with generating them as package-private was that
kotlin-stdlib for JVM would end up declaring symbols from other
platforms, which would include some annotations from package
kotlin.native. But using that package is discouraged by some tools
because it has a Java keyword in its name. In particular, jlink refused
to work with such artifact altogether (KT-21266).
#KT-38652 Fixed
Inline functions require Kotlin compiler at least 1.3.50 if they were
generated by the compiler with API version >= 1.4. This is because since
API version 1.4, we've changed the generation scheme of parameter
nullability assertions and they now refer to methods from the standard
library which did not exist until 1.4. See
JvmSerializerExtension.writeInlineParameterNullCheckRequirement.
Consider `fun <E : I> foo(a: Any?) = a as? E`, where I is an interface.
This check used to fail, because the `a == null` was missing, and
the `isInterface` stdlib method crashes if the first argument
is null. This change adds the null check.
Also this change prettifies the instance check in case of type parameter
left operand.
Vyacheslav Gerasimov