darling-libcxx/include/stdexcept
Eric Fiselier 417a7dee1c Fix ABI compatibility of <stdexcept> with VCRuntime.
Summary:
Currently, libc++'s `<stdexcept>` doesn't play nice with `vcruntime`. Specifically:

* `logic_error` and `runtime_error` have a different layout.
* libc++'s `logic_error` and `runtime_error` override `what()` but `vcruntime` does not.
*  `vcruntime` uses weak vtables for `<stdexcept>` types.
* libc++'s `<stdexcept>` constructors and assignment operators may have different manglings than `vcruntimes`.

This patch makes libc++'s declarations in `<stdexcept>` match those provided by MSVC's STL as closely as possible.
If MSVC doesn't declare a special member, then neither do we. This ensures that the implicit definitions have the same linkage, visibility, triviality, and noexcept-ness.







Reviewers: thomasanderson, ldionne, smeenai

Reviewed By: thomasanderson

Subscribers: jdoerfert, libcxx-commits

Differential Revision: https://reviews.llvm.org/D58945

git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@355546 91177308-0d34-0410-b5e6-96231b3b80d8
2019-03-06 20:31:57 +00:00

305 lines
7.2 KiB
C++

// -*- C++ -*-
//===--------------------------- stdexcept --------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
#ifndef _LIBCPP_STDEXCEPT
#define _LIBCPP_STDEXCEPT
/*
stdexcept synopsis
namespace std
{
class logic_error;
class domain_error;
class invalid_argument;
class length_error;
class out_of_range;
class runtime_error;
class range_error;
class overflow_error;
class underflow_error;
for each class xxx_error:
class xxx_error : public exception // at least indirectly
{
public:
explicit xxx_error(const string& what_arg);
explicit xxx_error(const char* what_arg);
virtual const char* what() const noexcept // returns what_arg
};
} // std
*/
#include <__config>
#include <exception>
#include <iosfwd> // for string forward decl
#ifdef _LIBCPP_NO_EXCEPTIONS
#include <cstdlib>
#endif
#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
#pragma GCC system_header
#endif
_LIBCPP_BEGIN_NAMESPACE_STD
#ifndef _LIBCPP_ABI_VCRUNTIME
class _LIBCPP_HIDDEN __libcpp_refstring
{
const char* __imp_;
bool __uses_refcount() const;
public:
explicit __libcpp_refstring(const char* __msg);
__libcpp_refstring(const __libcpp_refstring& __s) _NOEXCEPT;
__libcpp_refstring& operator=(const __libcpp_refstring& __s) _NOEXCEPT;
~__libcpp_refstring();
const char* c_str() const _NOEXCEPT {return __imp_;}
};
#endif // !_LIBCPP_ABI_VCRUNTIME
_LIBCPP_END_NAMESPACE_STD
namespace std // purposefully not using versioning namespace
{
class _LIBCPP_EXCEPTION_ABI logic_error
: public exception
{
#ifndef _LIBCPP_ABI_VCRUNTIME
private:
_VSTD::__libcpp_refstring __imp_;
public:
explicit logic_error(const string&);
explicit logic_error(const char*);
logic_error(const logic_error&) _NOEXCEPT;
logic_error& operator=(const logic_error&) _NOEXCEPT;
virtual ~logic_error() _NOEXCEPT;
virtual const char* what() const _NOEXCEPT;
#else
public:
explicit logic_error(const _VSTD::string&); // Symbol uses versioned std::string
_LIBCPP_INLINE_VISIBILITY explicit logic_error(const char* __s) : exception(__s) {}
#endif
};
class _LIBCPP_EXCEPTION_ABI runtime_error
: public exception
{
#ifndef _LIBCPP_ABI_VCRUNTIME
private:
_VSTD::__libcpp_refstring __imp_;
public:
explicit runtime_error(const string&);
explicit runtime_error(const char*);
runtime_error(const runtime_error&) _NOEXCEPT;
runtime_error& operator=(const runtime_error&) _NOEXCEPT;
virtual ~runtime_error() _NOEXCEPT;
virtual const char* what() const _NOEXCEPT;
#else
public:
explicit runtime_error(const _VSTD::string&); // Symbol uses versioned std::string
_LIBCPP_INLINE_VISIBILITY explicit runtime_error(const char* __s) : exception(__s) {}
#endif // _LIBCPP_ABI_VCRUNTIME
};
class _LIBCPP_EXCEPTION_ABI domain_error
: public logic_error
{
public:
_LIBCPP_INLINE_VISIBILITY explicit domain_error(const string& __s) : logic_error(__s) {}
_LIBCPP_INLINE_VISIBILITY explicit domain_error(const char* __s) : logic_error(__s) {}
#ifndef _LIBCPP_ABI_VCRUNTIME
virtual ~domain_error() _NOEXCEPT;
#endif
};
class _LIBCPP_EXCEPTION_ABI invalid_argument
: public logic_error
{
public:
_LIBCPP_INLINE_VISIBILITY explicit invalid_argument(const string& __s) : logic_error(__s) {}
_LIBCPP_INLINE_VISIBILITY explicit invalid_argument(const char* __s) : logic_error(__s) {}
#ifndef _LIBCPP_ABI_VCRUNTIME
virtual ~invalid_argument() _NOEXCEPT;
#endif
};
class _LIBCPP_EXCEPTION_ABI length_error
: public logic_error
{
public:
_LIBCPP_INLINE_VISIBILITY explicit length_error(const string& __s) : logic_error(__s) {}
_LIBCPP_INLINE_VISIBILITY explicit length_error(const char* __s) : logic_error(__s) {}
#ifndef _LIBCPP_ABI_VCRUNTIME
virtual ~length_error() _NOEXCEPT;
#endif
};
class _LIBCPP_EXCEPTION_ABI out_of_range
: public logic_error
{
public:
_LIBCPP_INLINE_VISIBILITY explicit out_of_range(const string& __s) : logic_error(__s) {}
_LIBCPP_INLINE_VISIBILITY explicit out_of_range(const char* __s) : logic_error(__s) {}
#ifndef _LIBCPP_ABI_VCRUNTIME
virtual ~out_of_range() _NOEXCEPT;
#endif
};
class _LIBCPP_EXCEPTION_ABI range_error
: public runtime_error
{
public:
_LIBCPP_INLINE_VISIBILITY explicit range_error(const string& __s) : runtime_error(__s) {}
_LIBCPP_INLINE_VISIBILITY explicit range_error(const char* __s) : runtime_error(__s) {}
#ifndef _LIBCPP_ABI_VCRUNTIME
virtual ~range_error() _NOEXCEPT;
#endif
};
class _LIBCPP_EXCEPTION_ABI overflow_error
: public runtime_error
{
public:
_LIBCPP_INLINE_VISIBILITY explicit overflow_error(const string& __s) : runtime_error(__s) {}
_LIBCPP_INLINE_VISIBILITY explicit overflow_error(const char* __s) : runtime_error(__s) {}
#ifndef _LIBCPP_ABI_VCRUNTIME
virtual ~overflow_error() _NOEXCEPT;
#endif
};
class _LIBCPP_EXCEPTION_ABI underflow_error
: public runtime_error
{
public:
_LIBCPP_INLINE_VISIBILITY explicit underflow_error(const string& __s) : runtime_error(__s) {}
_LIBCPP_INLINE_VISIBILITY explicit underflow_error(const char* __s) : runtime_error(__s) {}
#ifndef _LIBCPP_ABI_VCRUNTIME
virtual ~underflow_error() _NOEXCEPT;
#endif
};
} // std
_LIBCPP_BEGIN_NAMESPACE_STD
// in the dylib
_LIBCPP_NORETURN _LIBCPP_FUNC_VIS void __throw_runtime_error(const char*);
_LIBCPP_NORETURN inline _LIBCPP_INLINE_VISIBILITY
void __throw_logic_error(const char*__msg)
{
#ifndef _LIBCPP_NO_EXCEPTIONS
throw logic_error(__msg);
#else
((void)__msg);
_VSTD::abort();
#endif
}
_LIBCPP_NORETURN inline _LIBCPP_INLINE_VISIBILITY
void __throw_domain_error(const char*__msg)
{
#ifndef _LIBCPP_NO_EXCEPTIONS
throw domain_error(__msg);
#else
((void)__msg);
_VSTD::abort();
#endif
}
_LIBCPP_NORETURN inline _LIBCPP_INLINE_VISIBILITY
void __throw_invalid_argument(const char*__msg)
{
#ifndef _LIBCPP_NO_EXCEPTIONS
throw invalid_argument(__msg);
#else
((void)__msg);
_VSTD::abort();
#endif
}
_LIBCPP_NORETURN inline _LIBCPP_INLINE_VISIBILITY
void __throw_length_error(const char*__msg)
{
#ifndef _LIBCPP_NO_EXCEPTIONS
throw length_error(__msg);
#else
((void)__msg);
_VSTD::abort();
#endif
}
_LIBCPP_NORETURN inline _LIBCPP_INLINE_VISIBILITY
void __throw_out_of_range(const char*__msg)
{
#ifndef _LIBCPP_NO_EXCEPTIONS
throw out_of_range(__msg);
#else
((void)__msg);
_VSTD::abort();
#endif
}
_LIBCPP_NORETURN inline _LIBCPP_INLINE_VISIBILITY
void __throw_range_error(const char*__msg)
{
#ifndef _LIBCPP_NO_EXCEPTIONS
throw range_error(__msg);
#else
((void)__msg);
_VSTD::abort();
#endif
}
_LIBCPP_NORETURN inline _LIBCPP_INLINE_VISIBILITY
void __throw_overflow_error(const char*__msg)
{
#ifndef _LIBCPP_NO_EXCEPTIONS
throw overflow_error(__msg);
#else
((void)__msg);
_VSTD::abort();
#endif
}
_LIBCPP_NORETURN inline _LIBCPP_INLINE_VISIBILITY
void __throw_underflow_error(const char*__msg)
{
#ifndef _LIBCPP_NO_EXCEPTIONS
throw underflow_error(__msg);
#else
((void)__msg);
_VSTD::abort();
#endif
}
_LIBCPP_END_NAMESPACE_STD
#endif // _LIBCPP_STDEXCEPT