6682380: Foreach loop with generics inside finally block crashes javac with -target 1.5
Summary: A missing type-erasure in Lower.java causes the compiler to crash since JDK6
Reviewed-by: jjg
--- a/langtools/src/share/classes/com/sun/tools/javac/comp/Lower.java Tue Apr 15 17:48:22 2008 -0700
+++ b/langtools/src/share/classes/com/sun/tools/javac/comp/Lower.java Wed Apr 23 17:10:03 2008 +0100
@@ -2863,13 +2863,15 @@
JCExpressionStatement step = make.Exec(makeUnary(JCTree.PREINC, make.Ident(index)));
Type elemtype = types.elemtype(tree.expr.type);
- JCStatement loopvarinit = make.
- VarDef(tree.var.sym,
- make.
- Indexed(make.Ident(arraycache), make.Ident(index)).
- setType(elemtype));
+ JCExpression loopvarinit = make.Indexed(make.Ident(arraycache),
+ make.Ident(index)).setType(elemtype);
+ JCVariableDecl loopvardef = (JCVariableDecl)make.VarDef(tree.var.mods,
+ tree.var.name,
+ tree.var.vartype,
+ loopvarinit).setType(tree.var.type);
+ loopvardef.sym = tree.var.sym;
JCBlock body = make.
- Block(0, List.of(loopvarinit, tree.body));
+ Block(0, List.of(loopvardef, tree.body));
result = translate(make.
ForLoop(loopinit,
@@ -2944,7 +2946,11 @@
JCExpression vardefinit = make.App(make.Select(make.Ident(itvar), next));
if (iteratorTarget != syms.objectType)
vardefinit = make.TypeCast(iteratorTarget, vardefinit);
- JCVariableDecl indexDef = make.VarDef(tree.var.sym, vardefinit);
+ JCVariableDecl indexDef = (JCVariableDecl)make.VarDef(tree.var.mods,
+ tree.var.name,
+ tree.var.vartype,
+ vardefinit).setType(tree.var.type);
+ indexDef.sym = tree.var.sym;
JCBlock body = make.Block(0, List.of(indexDef, tree.body));
result = translate(make.
ForLoop(List.of(init),
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/langtools/test/tools/javac/foreach/T6682380.java Wed Apr 23 17:10:03 2008 +0100
@@ -0,0 +1,45 @@
+/*
+ * Copyright 2008 Sun Microsystems, Inc. All Rights Reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
+ * CA 95054 USA or visit www.sun.com if you need additional information or
+ * have any questions.
+ */
+
+/*
+ * @test
+ * @bug 6682380 6679509
+ * @summary Foreach loop with generics inside finally block crashes javac with -target 1.5
+ * @author Jan Lahoda, Maurizio Cimadamore
+ * @compile -target 1.5 T6682380.java
+ */
+
+import java.util.List;
+
+public class T6682380<X> {
+
+ public static void main(String[] args) {
+ try {
+ } finally {
+ List<T6682380<?>> l = null;
+ T6682380<?>[] a = null;
+ for (T6682380<?> e1 : l);
+ for (T6682380<?> e2 : a);
+ }
+ }
+}