8188151: "assert(entry_for(catch_pco, handler_bcis->at(i), scope_depth)->pco() == handler_pcos->at(i))" failure with C1
Reviewed-by: kvn, dlong
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parent
82a1334ded
commit
3a205924e4
src/hotspot/share/c1
test/hotspot/jtreg/compiler/exceptions
@ -500,18 +500,22 @@ void Compilation::generate_exception_handler_table() {
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scope_depths->trunc_to(0);
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pcos->trunc_to(0);
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int prev_scope = 0;
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for (int i = 0; i < handlers->length(); i++) {
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XHandler* handler = handlers->handler_at(i);
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assert(handler->entry_pco() != -1, "must have been generated");
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assert(handler->scope_count() >= prev_scope, "handlers should be sorted by scope");
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int e = bcis->find(handler->handler_bci());
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if (e >= 0 && scope_depths->at(e) == handler->scope_count()) {
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// two different handlers are declared to dispatch to the same
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// catch bci. During parsing we created edges for each
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// handler but we really only need one. The exception handler
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// table will also get unhappy if we try to declare both since
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// it's nonsensical. Just skip this handler.
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continue;
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if (handler->scope_count() == prev_scope) {
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int e = bcis->find_from_end(handler->handler_bci());
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if (e >= 0 && scope_depths->at(e) == handler->scope_count()) {
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// two different handlers are declared to dispatch to the same
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// catch bci. During parsing we created edges for each
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// handler but we really only need one. The exception handler
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// table will also get unhappy if we try to declare both since
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// it's nonsensical. Just skip this handler.
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continue;
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}
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}
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bcis->append(handler->handler_bci());
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@ -521,13 +525,14 @@ void Compilation::generate_exception_handler_table() {
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scope_depths->append(0);
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} else {
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scope_depths->append(handler->scope_count());
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}
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}
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pcos->append(handler->entry_pco());
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// stop processing once we hit a catch any
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if (handler->is_catch_all()) {
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assert(i == handlers->length() - 1, "catch all must be last handler");
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}
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}
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prev_scope = handler->scope_count();
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}
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exception_handler_table()->add_subtable(info->pco(), bcis, scope_depths, pcos);
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}
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@ -0,0 +1,75 @@
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/*
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* Copyright (c) 2017, Red Hat, Inc. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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/**
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* @test
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* @bug 8188151
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* @summary assert failure with 2 handlers at same bci
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* @run main/othervm -XX:-BackgroundCompilation -XX:CompileOnly=TestC1ExceptionHandlersSameBCI::test1 -XX:CompileOnly=TestC1ExceptionHandlersSameBCI::test2 -XX:CompileCommand=dontinline,TestC1ExceptionHandlersSameBCI::not_inline1 -XX:CompileCommand=dontinline,TestC1ExceptionHandlersSameBCI::not_inline2 TestC1ExceptionHandlersSameBCI
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*
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*/
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public class TestC1ExceptionHandlersSameBCI {
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static class Ex1 extends Exception {
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}
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static class Ex2 extends Exception {
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}
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static void not_inline1() throws Ex1, Ex2 {
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}
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static void not_inline2(int v) {
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}
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static void test1() throws Ex1, Ex2 {
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int i = 0;
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try {
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not_inline1();
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i = 1;
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not_inline1();
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} catch (Ex1|Ex2 ex) {
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not_inline2(i);
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}
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}
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static void test2() {
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int i = 0;
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try {
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test1();
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i = 1;
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test1();
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} catch (Ex1|Ex2 ex) {
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not_inline2(i);
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}
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}
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static public void main(String[] args) {
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for (int i = 0; i < 5000; i++) {
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test2();
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}
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}
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}
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