Don't report compilation exceptions into error.log

compiler/incremental-compilation-impl/src/org/jetbrains/kotlin/incremental/util/messageCollectorUtil.kt

@@ -8,10 +8,10 @@ import org.jetbrains.kotlin.cli.common.messages.CompilerMessageSeverity
 import org.jetbrains.kotlin.cli.common.messages.MessageCollector
 
 public fun MessageCollector.reportException(e: Throwable, location: ExceptionLocation) {
-    report(severity = CompilerMessageSeverity.EXCEPTION, message = "$location failed:${e.message}\n${e.stackTraceToString()}")
+    report(severity = CompilerMessageSeverity.EXCEPTION, message = "${location.readableName} failed: ${e.message}\n${e.stackTraceToString()}")
 }
 
-public enum class ExceptionLocation(val readablename: String) {
+public enum class ExceptionLocation(val readableName: String) {
     INCREMENTAL_COMPILATION("Incremental compilation"),
     DAEMON("Daemon compilation"),
     OUT_OF_PROCESS_COMPILATION("Out of process compilation")

libraries/tools/kotlin-gradle-plugin-integration-tests/src/test/kotlin/org/jetbrains/kotlin/gradle/BuildReportsIT.kt

@@ -173,6 +173,15 @@ class BuildReportsIT : KGPBaseTest() {
     @GradleTest
     fun testErrorsFileSmokeTest(gradleVersion: GradleVersion) {
         project("simpleProject", gradleVersion) {
+
+            val lookupsTab = projectPath.resolve("build/kotlin/compileKotlin/cacheable/caches-jvm/lookups/lookups.tab")
+            buildGradle.appendText("""
+                tasks.named("compileKotlin") {
+                    doLast {
+                        new File("${lookupsTab.toUri().path}").write("Invalid contents")
+                    }
+                }
+            """.trimIndent())
             build("compileKotlin") {
                 assertTrue { projectPath.resolve(".gradle/build_errors").listDirectoryEntries().isEmpty() }
             }
@@ -186,4 +195,19 @@ class BuildReportsIT : KGPBaseTest() {
         }
     }
 
+    @DisplayName("Error file should not contain compilation exceptions")
+    @GradleTest
+    fun testErrorsFileWithCompilationError(gradleVersion: GradleVersion) {
+        project("simpleProject", gradleVersion) {
+            build("compileKotlin") {
+                assertTrue { projectPath.resolve(".gradle/build_errors").listDirectoryEntries().isEmpty() }
+            }
+            val kotlinFile = kotlinSourcesDir().resolve("helloWorld.kt")
+            kotlinFile.modify { it.replace("ArrayList","skjfghsjk") }
+            buildAndFail("compileKotlin") {
+                assertTrue { projectPath.resolve(".gradle/build_errors").listDirectoryEntries().isEmpty() }
+            }
+        }
+    }
+
 }

libraries/tools/kotlin-gradle-plugin/src/common/kotlin/org/jetbrains/kotlin/gradle/logging/GradleErrorMessageCollector.kt

@@ -11,7 +11,11 @@ import org.jetbrains.kotlin.cli.common.messages.MessageCollector
 import java.io.File
 import java.io.FileWriter
 
-class GradleErrorMessageCollector(private val delegate: MessageCollector? = null) : MessageCollector {
+class GradleErrorMessageCollector(
+    private val delegate: MessageCollector? = null,
+    private val acceptableMessageSeverity: List<CompilerMessageSeverity> = listOf(CompilerMessageSeverity.EXCEPTION)
+) : MessageCollector {
+
     private val errors = ArrayList<String>()
 
     override fun clear() {
@@ -26,7 +30,7 @@ class GradleErrorMessageCollector(private val delegate: MessageCollector? = null
     override fun report(severity: CompilerMessageSeverity, message: String, location: CompilerMessageSourceLocation?) {
         delegate?.report(severity, message, location)
 
-        if (severity in listOf(CompilerMessageSeverity.ERROR, CompilerMessageSeverity.EXCEPTION)) {
+        if (severity in acceptableMessageSeverity) {
             synchronized(errors) {
                 errors.add(message)
             }