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6718364: inference fails when a generic method is invoked with raw arguments

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Bug in the implementation of Types.isSubtypeUnchecked

Reviewed-by: jjg
This commit is contained in:
Maurizio Cimadamore 2008-08-08 17:38:20 +01:00
parent b267c3b746
commit fe12031643
3 changed files with 46 additions and 0 deletions
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5
langtools/src/share/classes/com/sun/tools/javac/code/Types.java
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@ -305,6 +305,11 @@ public class Types {
else if (t.tag == TYPEVAR) {
return isSubtypeUnchecked(t.getUpperBound(), s, warn);
}
else if (s.tag == UNDETVAR) {
UndetVar uv = (UndetVar)s;
if (uv.inst != null)
return isSubtypeUnchecked(t, uv.inst, warn);
}
else if (!s.isRaw()) {
Type t2 = asSuper(t, s.tsym);
if (t2 != null && t2.isRaw()) {

38
langtools/test/tools/javac/generics/inference/6718364/T6718364.java Normal file
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@ -0,0 +1,38 @@
/*
* 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 6718364
* @summary inference fails when a generic method is invoked with raw arguments
* @compile/ref=T6718364.out -XDstdout -XDrawDiagnostics -Xlint:unchecked T6718364.java
*/
class T6718364 {
class X<T> {}
public <T> void m(X<T> x, T t) {}
public void test() {
m(new X<X<Integer>>(), new X());
}
}

3
langtools/test/tools/javac/generics/inference/6718364/T6718364.out Normal file
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@ -0,0 +1,3 @@
T6718364.java:36:32: compiler.warn.prob.found.req: (- compiler.misc.unchecked.assign), T6718364.X, T6718364.X<java.lang.Integer>
T6718364.java:36:10: compiler.warn.unchecked.meth.invocation.applied: <T>m(T6718364.X<T>,T), T6718364, , T6718364.X<T6718364.X<java.lang.Integer>>,T6718364.X
2 warnings