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8358781: C2 fails with assert "bad profile data type" when TypeProfileCasts is disabled

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Reviewed-by: mhaessig, kvn, dfenacci
This commit is contained in:
Saranya Natarajan 2025-08-18 08:16:32 +00:00 committed by Manuel Hässig
parent ca753ebad6
commit 2b756ab1e8
2 changed files with 59 additions and 8 deletions
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18
src/hotspot/share/opto/graphKit.cpp
View File

@ -2309,16 +2309,18 @@ Node* GraphKit::record_profiled_receiver_for_speculation(Node* n) {
if (!data->as_BitData()->null_seen()) {
ptr_kind = ProfileNeverNull;
} else {
assert(data->is_ReceiverTypeData(), "bad profile data type");
ciReceiverTypeData* call = (ciReceiverTypeData*)data->as_ReceiverTypeData();
uint i = 0;
for (; i < call->row_limit(); i++) {
ciKlass* receiver = call->receiver(i);
if (receiver != nullptr) {
break;
if (TypeProfileCasts) {
assert(data->is_ReceiverTypeData(), "bad profile data type");
ciReceiverTypeData* call = (ciReceiverTypeData*)data->as_ReceiverTypeData();
uint i = 0;
for (; i < call->row_limit(); i++) {
ciKlass* receiver = call->receiver(i);
if (receiver != nullptr) {
break;
}
}
ptr_kind = (i == call->row_limit()) ? ProfileAlwaysNull : ProfileMaybeNull;
}
ptr_kind = (i == call->row_limit()) ? ProfileAlwaysNull : ProfileMaybeNull;
}
}
}

49
test/hotspot/jtreg/compiler/arguments/TestProfileCasts.java Normal file
View File

@ -0,0 +1,49 @@
/*
* Copyright (c) 2025, Oracle and/or its affiliates. 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
/**
* @test
* @bug 8358781
* @summary Regression test for -XX:-TypeProfileCasts crash
* @requires vm.debug
* @run main/othervm -XX:-TypeProfileCasts -XX:CompileThresholdScaling=0.01
* compiler.arguments.TestProfileCasts
*/
package compiler.arguments;
public class TestProfileCasts {
static class Foo {
}
private static void test(Object o) {
if (o instanceof Foo) {
}
}
public static void main(String[] args) {
for (int i = 0; i < 100; i++) {
test(new Foo());
test(null);
}
}
}