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73 lines
2.8 KiB
C
73 lines
2.8 KiB
C
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*-
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* vim: sw=2 ts=8 et :
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*/
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#ifndef mozilla_${HEADER}_h
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#define mozilla_${HEADER}_h
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#if _HAS_EXCEPTIONS
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# error "STL code can only be used with -fno-exceptions"
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#endif
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#if defined(__clang__)
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// Silence "warning: #include_next is a language extension [-Wgnu-include-next]"
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#pragma clang system_header
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#endif
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// Include mozalloc after the STL header and all other headers it includes
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// have been preprocessed.
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#if !defined(MOZ_INCLUDE_MOZALLOC_H)
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# define MOZ_INCLUDE_MOZALLOC_H
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# define MOZ_INCLUDE_MOZALLOC_H_FROM_${HEADER}
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#endif
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#ifdef _DEBUG
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// From
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// http://msdn.microsoft.com/en-us/library/aa985982%28VS.80%29.aspx
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// and
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// http://msdn.microsoft.com/en-us/library/aa985965%28VS.80%29.aspx
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// there appear to be two types of STL container checking. The
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// former is enabled by -D_DEBUG (which is implied by -MDd or -MTd), and
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// looks to be full generation/mutation checked iterators as done by
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// _GLIBCXX_DEBUG. The latter appears to just be bounds checking, and
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// is enabled by the following macros. It appears that the _DEBUG
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// iterators subsume _SECURE_SCL, and the following settings are
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// default anyway, so we'll just leave this commented out.
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//# define _SECURE_SCL 1
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//# define _SECURE_SCL_THROWS 0
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#else
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// Note: _SECURE_SCL iterators are on by default in opt builds. We
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// could leave them on, but since gcc doesn't, we might as well
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// preserve that behavior for perf reasons. nsTArray is in the same
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// camp as gcc. Can revisit later.
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//
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// FIXME/bug 551254: because we're not wrapping all the STL headers we
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// use, undefining this here can cause some headers to be built with
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// iterator checking and others not. Turning this off until we have a
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// better plan.
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//# undef _SECURE_SCL
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#endif
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#include_next <${HEADER}>
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#ifdef MOZ_INCLUDE_MOZALLOC_H_FROM_${HEADER}
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// See if we're in code that can use mozalloc.
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# if !defined(NS_NO_XPCOM) && !defined(MOZ_NO_MOZALLOC)
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// In recent versions of MSVC, <new>, which mozalloc.h includes, uses
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// <type_traits> without including it. Before MSVC 17.7, this worked
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// fine because <new> included <exception>, which includes <type_traits>.
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// That is still the case, but it now also includes <cstdlib> before
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// <type_traits>, so when something includes <exception> before <new>,
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// we get here before <type_traits> is included, which ends up not working.
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# include <type_traits>
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# include "mozilla/mozalloc.h"
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# else
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# error "STL code can only be used with infallible ::operator new()"
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# endif
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#endif
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#endif // if mozilla_${HEADER}_h
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