config/gcc-stl-wrapper.template.h

   1 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*-
   2  * vim: sw=2 ts=8 et :
   3  */
   4 /* This Source Code Form is subject to the terms of the Mozilla Public
   5  * License, v. 2.0. If a copy of the MPL was not distributed with this
   6  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
   7
   8 #ifndef mozilla_${HEADER}_h
   9 #define mozilla_${HEADER}_h
  10
  11 // For some reason, Apple's GCC refuses to honor -fno-exceptions when
  12 // compiling ObjC.
  13 #if defined(__EXCEPTIONS) && __EXCEPTIONS && !(__OBJC__ && __GNUC__ && XP_IOS)
  14 #  error "STL code can only be used with -fno-exceptions"
  15 #endif
  16
  17 // Silence "warning: #include_next is a GCC extension"
  18 #pragma GCC system_header
  19
  20 #if defined(DEBUG) && !defined(_GLIBCXX_DEBUG)
  21 // Enable checked iterators and other goodies
  22 //
  23 // FIXME/bug 551254: gcc's debug STL implementation requires -frtti.
  24 // Figure out how to resolve this with -fno-rtti.  Maybe build with
  25 // -frtti in DEBUG builds?
  26 //
  27 //  # define _GLIBCXX_DEBUG 1
  28 #endif
  29
  30 // Don't include mozalloc.h for cstdlib, cmath, type_traits, limits and iosfwd.
  31 // See bug 1245076 (cstdlib), bug 1720641 (cmath), bug 1594027 (type_traits,
  32 // limits) and bug 1694575 (iosfwd).
  33 // Please be careful when adding more exceptions, especially regarding
  34 // the header not directly or indirectly including <new>.
  35 #ifndef moz_dont_include_mozalloc_for_cstdlib
  36 #  define moz_dont_include_mozalloc_for_cstdlib
  37 #endif
  38
  39 #ifndef moz_dont_include_mozalloc_for_cmath
  40 #  define moz_dont_include_mozalloc_for_cmath
  41 #endif
  42
  43 #ifndef moz_dont_include_mozalloc_for_type_traits
  44 #  define moz_dont_include_mozalloc_for_type_traits
  45 #endif
  46
  47 #ifndef moz_dont_include_mozalloc_for_limits
  48 #  define moz_dont_include_mozalloc_for_limits
  49 #endif
  50
  51 #ifndef moz_dont_include_mozalloc_for_iosfwd
  52 #  define moz_dont_include_mozalloc_for_iosfwd
  53 #endif
  54
  55 // Include mozalloc after the STL header and all other headers it includes
  56 // have been preprocessed.
  57 #if !defined(MOZ_INCLUDE_MOZALLOC_H) && \
  58     !defined(moz_dont_include_mozalloc_for_${HEADER})
  59 #  define MOZ_INCLUDE_MOZALLOC_H
  60 #  define MOZ_INCLUDE_MOZALLOC_H_FROM_${HEADER}
  61 #endif
  62
  63 #pragma GCC visibility push(default)
  64 #include_next <${HEADER}>
  65 #pragma GCC visibility pop
  66
  67 #ifdef MOZ_INCLUDE_MOZALLOC_H_FROM_${HEADER}
  68 // See if we're in code that can use mozalloc.
  69 #  if !defined(NS_NO_XPCOM) && !defined(MOZ_NO_MOZALLOC)
  70 #    include "mozilla/mozalloc.h"
  71 #  else
  72 #    error "STL code can only be used with infallible ::operator new()"
  73 #  endif
  74 #endif
  75
  76 // gcc calls a __throw_*() function from bits/functexcept.h when it
  77 // wants to "throw an exception".  functexcept exists nominally to
  78 // support -fno-exceptions, but since we'll always use the system
  79 // libstdc++, and it's compiled with exceptions, then in practice
  80 // these __throw_*() functions will always throw exceptions (shades of
  81 // -fshort-wchar).  We don't want that and so define our own inlined
  82 // __throw_*().
  83 #ifndef mozilla_throw_gcc_h
  84 #  include "mozilla/throw_gcc.h"
  85 #endif
  86
  87 #endif  // if mozilla_${HEADER}_h