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JVM Metadata: Add a bit to mark anonymous objects in inline functions

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Anonymous objects in the scope of an inline functions are copied to
all call-sites. This makes them part of the public ABI of a Kotlin
library.

We introduce a flag to mark all classes in the scope of an inline
function. When compiling with assertions enabled, we check that
this flag is set whenever we inline an anonymous object from another
module.
This commit is contained in:
Steven Schäfer
2020-10-22 14:07:56 +02:00
committed by Alexander Udalov
parent 254fc53b17
commit de9d2919a8
30 changed files with 181 additions and 58 deletions
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libraries/stdlib/jvm/runtime/kotlin/Metadata.kt
+2
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@@ -76,6 +76,8 @@ public annotation class Metadata(
* * 5 - this class file has stable metadata and ABI. This is used only for class files compiled with JVM IR (see flag #4) or FIR (#6),
* and prevents metadata incompatibility diagnostics from being reported where the class is used.
* * 6 - this class file is compiled with the new Kotlin compiler frontend (FIR).
* * 7 - this class is used in the scope of an inline function and implicitly part of the public ABI. Only valid from
* metadata version 1.6.0.
*/
@SinceKotlin("1.1")
@get:JvmName("xi")