2d23488dac
Author: David Chisnall <theraven@FreeBSD.org>
Date: Wed Mar 22 12:27:08 2017 +0000
Simplify some code.
realloc() with a null pointer is equivalent to malloc, so we don't need
to handle the two cases independently.
Fixes #46
This should help with lang/beignet and other programs, which expect
__cxa_demangle(name, NULL, NULL, &status) to return zero in status.
PR: 213732
MFC after: 3 days
125 lines
3.7 KiB
C++
125 lines
3.7 KiB
C++
/*
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* Copyright 2010-2012 PathScale, Inc. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS ``AS
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* IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
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* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
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* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
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* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
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* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
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* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "typeinfo.h"
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#include <string.h>
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#include <stdlib.h>
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#include <stdio.h>
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using std::type_info;
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type_info::~type_info() {}
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bool type_info::operator==(const type_info &other) const
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{
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return __type_name == other.__type_name;
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}
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bool type_info::operator!=(const type_info &other) const
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{
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return __type_name != other.__type_name;
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}
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bool type_info::before(const type_info &other) const
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{
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return __type_name < other.__type_name;
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}
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const char* type_info::name() const
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{
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return __type_name;
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}
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type_info::type_info (const type_info& rhs)
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{
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__type_name = rhs.__type_name;
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}
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type_info& type_info::operator= (const type_info& rhs)
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{
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return *new type_info(rhs);
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}
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ABI_NAMESPACE::__fundamental_type_info::~__fundamental_type_info() {}
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ABI_NAMESPACE::__array_type_info::~__array_type_info() {}
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ABI_NAMESPACE::__function_type_info::~__function_type_info() {}
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ABI_NAMESPACE::__enum_type_info::~__enum_type_info() {}
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ABI_NAMESPACE::__class_type_info::~__class_type_info() {}
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ABI_NAMESPACE::__si_class_type_info::~__si_class_type_info() {}
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ABI_NAMESPACE::__vmi_class_type_info::~__vmi_class_type_info() {}
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ABI_NAMESPACE::__pbase_type_info::~__pbase_type_info() {}
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ABI_NAMESPACE::__pointer_type_info::~__pointer_type_info() {}
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ABI_NAMESPACE::__pointer_to_member_type_info::~__pointer_to_member_type_info() {}
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// From libelftc
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extern "C" char *__cxa_demangle_gnu3(const char *);
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extern "C" char* __cxa_demangle(const char* mangled_name,
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char* buf,
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size_t* n,
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int* status)
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{
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// TODO: We should probably just be linking against libelf-tc, rather than
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// copying their code. This requires them to do an actual release,
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// however, and for our changes to be pushed upstream. We also need to
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// call a different demangling function here depending on the ABI (e.g.
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// ARM).
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char *demangled = __cxa_demangle_gnu3(mangled_name);
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if (NULL != demangled)
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{
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size_t len = strlen(demangled);
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if (!buf || (*n < len+1))
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{
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buf = static_cast<char*>(realloc(buf, len+1));
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}
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if (0 != buf)
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{
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memcpy(buf, demangled, len);
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buf[len] = 0;
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if (n)
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{
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*n = len;
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}
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if (status)
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{
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*status = 0;
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}
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}
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else
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{
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if (status)
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{
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*status = -1;
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}
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}
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free(demangled);
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}
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else
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{
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if (status)
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{
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*status = -2;
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}
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return NULL;
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}
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return buf;
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}
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