Merge pull request #21970 from github/andersfugmann/kotlin-2.4-v2

Kotlin: add Kotlin 2.4.0 support

java/ql/integration-tests/kotlin/all-platforms/diagnostics/kotlin-version-too-new/diagnostics.expected

@@ -1,5 +1,5 @@
 {
-  "markdownMessage": "The Kotlin version installed (`999.999.999`) is too recent for this version of CodeQL. Install a version lower than 2.3.30.",
+  "markdownMessage": "The Kotlin version installed (`999.999.999`) is too recent for this version of CodeQL. Install a version lower than 2.4.10.",
   "severity": "error",
   "source": {
     "extractorName": "java",

java/ql/integration-tests/kotlin/all-platforms/enhanced-nullability/test.py

@@ -1,6 +1,8 @@
 import pathlib
+import pytest
 
 
+@pytest.mark.kotlin1
 def test(codeql, java_full):
     java_srcs = " ".join([str(s) for s in pathlib.Path().glob("*.java")])
     codeql.database.create(

java/ql/integration-tests/kotlin/all-platforms/external-property-overloads/test.py

@@ -1,6 +1,8 @@
 import commands
+import pytest
 
 
+@pytest.mark.kotlin1
 def test(codeql, java_full):
     commands.run("kotlinc -language-version 1.9 test.kt -d lib")
     codeql.database.create(command="kotlinc -language-version 1.9 user.kt -cp lib")

java/ql/integration-tests/kotlin/all-platforms/extractor_information_kotlin1/test.py

@@ -1,2 +1,6 @@
+import pytest
+
+
+@pytest.mark.kotlin1
 def test(codeql, java_full):
     codeql.database.create(command="kotlinc -J-Xmx2G -language-version 1.9 SomeClass.kt")

java/ql/integration-tests/kotlin/all-platforms/file_classes/test.py

@@ -1,6 +1,8 @@
 import commands
+import pytest
 
 
+@pytest.mark.kotlin1
 def test(codeql, java_full):
     commands.run("kotlinc -language-version 1.9 A.kt")
     codeql.database.create(command="kotlinc -cp . -language-version 1.9 B.kt C.kt")

java/ql/integration-tests/kotlin/all-platforms/java-interface-redeclares-tostring/test.py

@@ -1,6 +1,8 @@
 import commands
+import pytest
 
 
+@pytest.mark.kotlin1
 def test(codeql, java_full):
     commands.run(["javac", "Test.java", "-d", "bin"])
     codeql.database.create(command="kotlinc -language-version 1.9 user.kt -cp bin")

java/ql/integration-tests/kotlin/all-platforms/kotlin_java_lowering_wildcards/test.py

@@ -1,6 +1,8 @@
 import commands
+import pytest
 
 
+@pytest.mark.kotlin1
 def test(codeql, java_full):
     # Compile the JavaDefns2 copy outside tracing, to make sure the Kotlin view of it matches the Java view seen by the traced javac compilation of JavaDefns.java below.
     commands.run(["javac", "JavaDefns2.java"])

java/ql/lib/change-notes/2026-06-04-kotlin-2.4.0.md

@@ -0,0 +1,4 @@
+---
+category: feature
+---
+* Kotlin 2.4.0 can now be analysed.