55 lines
2.4 KiB
C
55 lines
2.4 KiB
C
/*
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* Copyright (c) 2022, 2023, Oracle and/or its affiliates. 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. Oracle designates this
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* particular file as subject to the "Classpath" exception as provided
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* by Oracle in the LICENSE file that accompanied this code.
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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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#ifndef UNDEFINED_BEHAVIOR_SANITIZER
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#error "Build misconfigured, preprocessor macro UNDEFINED_BEHAVIOR_SANITIZER should be defined"
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#endif
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#ifndef __has_attribute
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#define __has_attribute(x) 0
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#endif
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#if (defined(__GNUC__) && !defined(__clang__)) || __has_attribute(visibility)
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#define ATTRIBUTE_DEFAULT_VISIBILITY __attribute__((visibility("default")))
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#else
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#define ATTRIBUTE_DEFAULT_VISIBILITY
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#endif
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#if (defined(__GNUC__) && !defined(__clang__)) || __has_attribute(used)
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#define ATTRIBUTE_USED __attribute__((used))
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#else
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#define ATTRIBUTE_USED
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#endif
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// Override weak symbol exposed by UBSan to override default options. This is called by UBSan
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// extremely early during library loading, before main is called. We need to override the default
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// options because by default UBSan only prints a warning for each occurrence. We want jtreg tests
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// to fail when undefined behavior is encountered. We also want a full stack trace for the offending
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// thread so it is easier to track down. You can override these options by setting the environment
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// variable UBSAN_OPTIONS.
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ATTRIBUTE_DEFAULT_VISIBILITY ATTRIBUTE_USED const char* __ubsan_default_options() {
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return "halt_on_error=1,print_stacktrace=1";
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}
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