Generate catch-block body within proper scope

compiler/ir/ir.psi2ir/src/org/jetbrains/kotlin/psi2ir/generators/TryCatchExpressionGenerator.kt

@@ -17,7 +17,6 @@
 package org.jetbrains.kotlin.psi2ir.generators
 
 import org.jetbrains.kotlin.ir.declarations.IrDeclarationOrigin
-import org.jetbrains.kotlin.ir.declarations.impl.IrVariableImpl
 import org.jetbrains.kotlin.ir.expressions.IrExpression
 import org.jetbrains.kotlin.ir.expressions.impl.IrCatchImpl
 import org.jetbrains.kotlin.ir.expressions.impl.IrTryImpl
@@ -37,7 +36,6 @@ class TryCatchExpressionGenerator(statementGenerator: StatementGenerator) : Stat
             val ktCatchParameter = ktCatchClause.catchParameter!!
             val ktCatchBody = ktCatchClause.catchBody!!
             val catchParameterDescriptor = getOrFail(BindingContext.VALUE_PARAMETER, ktCatchParameter)
-            val irCatchResult = statementGenerator.generateExpression(ktCatchBody)
 
             val irCatch = IrCatchImpl(
                     ktCatchClause.startOffset, ktCatchClause.endOffset,
@@ -45,9 +43,11 @@ class TryCatchExpressionGenerator(statementGenerator: StatementGenerator) : Stat
                             ktCatchParameter.startOffset, ktCatchParameter.endOffset,
                             IrDeclarationOrigin.CATCH_PARAMETER,
                             catchParameterDescriptor
-                    ),
-                    irCatchResult
-            )
+                    )
+            ).apply {
+                result = statementGenerator.generateExpression(ktCatchBody)
+            }
+
             irTryCatch.catches.add(irCatch)
         }
 

compiler/ir/ir.tree/src/org/jetbrains/kotlin/ir/expressions/impl/IrTryImpl.kt

@@ -63,11 +63,22 @@ class IrTryImpl(startOffset: Int, endOffset: Int, type: KotlinType) :
     }
 }
 
-class IrCatchImpl(
-        startOffset: Int, endOffset: Int,
-        override var catchParameter: IrVariable,
-        override var result: IrExpression
-) : IrCatch, IrElementBase(startOffset, endOffset) {
+class IrCatchImpl(startOffset: Int, endOffset: Int)
+    : IrCatch, IrElementBase(startOffset, endOffset)
+{
+    constructor(startOffset: Int, endOffset: Int, catchParameter: IrVariable)
+            : this(startOffset, endOffset) {
+        this.catchParameter = catchParameter
+    }
+
+    constructor(startOffset: Int, endOffset: Int, catchParameter: IrVariable, result: IrExpression)
+            : this(startOffset, endOffset, catchParameter) {
+        this.result = result
+    }
+
+    override lateinit var catchParameter: IrVariable
+    override lateinit var result: IrExpression
+
     override val parameter: VariableDescriptor get() = catchParameter.descriptor
 
     override fun <R, D> accept(visitor: IrElementVisitor<R, D>, data: D): R {

compiler/testData/ir/irText/expressions/catchParameterAccess.kt

@@ -0,0 +1,2 @@
+fun test(f: () -> Unit) =
+        try { f() } catch (e: Exception) { throw e }

compiler/testData/ir/irText/expressions/catchParameterAccess.txt

@@ -0,0 +1,14 @@
+FILE /catchParameterAccess.kt
+  FUN public fun test(f: () -> kotlin.Unit): kotlin.Unit
+    VALUE_PARAMETER value-parameter f: () -> kotlin.Unit
+    BLOCK_BODY
+      RETURN type=kotlin.Nothing from='test(() -> Unit): Unit'
+        TRY type=kotlin.Unit
+          try: BLOCK type=kotlin.Unit origin=null
+            CALL 'invoke(): Unit' type=kotlin.Unit origin=INVOKE
+              $this: GET_VAR 'value-parameter f: () -> Unit' type=() -> kotlin.Unit origin=VARIABLE_AS_FUNCTION
+          CATCH parameter=e: Exception /* = Exception */
+            VAR CATCH_PARAMETER val e: kotlin.Exception /* = java.lang.Exception */
+            BLOCK type=kotlin.Nothing origin=null
+              THROW type=kotlin.Nothing
+                GET_VAR 'e: Exception /* = Exception */' type=kotlin.Exception /* = java.lang.Exception */ origin=null

compiler/tests/org/jetbrains/kotlin/ir/IrTextTestCaseGenerated.java

@@ -551,6 +551,12 @@ public class IrTextTestCaseGenerated extends AbstractIrTextTestCase {
             doTest(fileName);
         }
 
+        @TestMetadata("catchParameterAccess.kt")
+        public void testCatchParameterAccess() throws Exception {
+            String fileName = KotlinTestUtils.navigationMetadata("compiler/testData/ir/irText/expressions/catchParameterAccess.kt");
+            doTest(fileName);
+        }
+
         @TestMetadata("chainOfSafeCalls.kt")
         public void testChainOfSafeCalls() throws Exception {
             String fileName = KotlinTestUtils.navigationMetadata("compiler/testData/ir/irText/expressions/chainOfSafeCalls.kt");