From 5f8de423f190bbb79a62f804151bc24824fa32d8 Mon Sep 17 00:00:00 2001 From: "Matt A. Tobin" Date: Fri, 2 Feb 2018 04:16:08 -0500 Subject: Add m-esr52 at 52.6.0 --- build/unix/stdc++compat/Makefile.in | 7 +++ build/unix/stdc++compat/moz.build | 24 ++++++++++ build/unix/stdc++compat/stdc++compat.cpp | 78 ++++++++++++++++++++++++++++++++ 3 files changed, 109 insertions(+) create mode 100644 build/unix/stdc++compat/Makefile.in create mode 100644 build/unix/stdc++compat/moz.build create mode 100644 build/unix/stdc++compat/stdc++compat.cpp (limited to 'build/unix/stdc++compat') diff --git a/build/unix/stdc++compat/Makefile.in b/build/unix/stdc++compat/Makefile.in new file mode 100644 index 000000000..054c1c023 --- /dev/null +++ b/build/unix/stdc++compat/Makefile.in @@ -0,0 +1,7 @@ +# This Source Code Form is subject to the terms of the Mozilla Public +# License, v. 2.0. If a copy of the MPL was not distributed with this file, +# You can obtain one at http://mozilla.org/MPL/2.0/. + +ENABLE_CLANG_PLUGIN := + +include $(topsrcdir)/config/rules.mk diff --git a/build/unix/stdc++compat/moz.build b/build/unix/stdc++compat/moz.build new file mode 100644 index 000000000..01663f37d --- /dev/null +++ b/build/unix/stdc++compat/moz.build @@ -0,0 +1,24 @@ +# -*- Mode: python; indent-tabs-mode: nil; tab-width: 40 -*- +# vim: set filetype=python: +# This Source Code Form is subject to the terms of the Mozilla Public +# License, v. 2.0. If a copy of the MPL was not distributed with this +# file, You can obtain one at http://mozilla.org/MPL/2.0/. + +if CONFIG['MOZ_LIBSTDCXX_TARGET_VERSION']: + Library('stdc++compat') + SOURCES += ['stdc++compat.cpp'] + +if CONFIG['MOZ_LIBSTDCXX_HOST_VERSION']: + HostLibrary('host_stdc++compat') + HOST_SOURCES += [ + 'stdc++compat.cpp', + ] + +FORCE_STATIC_LIB = True + +NO_PGO = True + +DISABLE_STL_WRAPPING = True + +DEFINES['MOZ_LIBSTDCXX_VERSION'] = CONFIG['MOZ_LIBSTDCXX_TARGET_VERSION'] +HOST_DEFINES['MOZ_LIBSTDCXX_VERSION'] = CONFIG['MOZ_LIBSTDCXX_HOST_VERSION'] diff --git a/build/unix/stdc++compat/stdc++compat.cpp b/build/unix/stdc++compat/stdc++compat.cpp new file mode 100644 index 000000000..95a7a9afe --- /dev/null +++ b/build/unix/stdc++compat/stdc++compat.cpp @@ -0,0 +1,78 @@ +/* This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ + +#include +#include +#include +#include +#include +#include + +/* GLIBCXX_3.4.8 is from gcc 4.1.1 (111691) + GLIBCXX_3.4.9 is from gcc 4.2.0 (111690) + GLIBCXX_3.4.10 is from gcc 4.3.0 (126287) + GLIBCXX_3.4.11 is from gcc 4.4.0 (133006) + GLIBCXX_3.4.12 is from gcc 4.4.1 (147138) + GLIBCXX_3.4.13 is from gcc 4.4.2 (151127) + GLIBCXX_3.4.14 is from gcc 4.5.0 (151126) + GLIBCXX_3.4.15 is from gcc 4.6.0 (160071) + GLIBCXX_3.4.16 is from gcc 4.6.1 (172240) + GLIBCXX_3.4.17 is from gcc 4.7.0 (174383) + GLIBCXX_3.4.18 is from gcc 4.8.0 (190787) + GLIBCXX_3.4.19 is from gcc 4.8.1 (199309) + GLIBCXX_3.4.20 is from gcc 4.9.0 (199307) + GLIBCXX_3.4.21 is from gcc 5.0 (210290) + +This file adds the necessary compatibility tricks to avoid symbols with +version GLIBCXX_3.4.16 and bigger, keeping binary compatibility with +libstdc++ 4.6.1. + +*/ + +#define GLIBCXX_VERSION(a, b, c) (((a) << 16) | ((b) << 8) | (c)) + +#if MOZ_LIBSTDCXX_VERSION >= GLIBCXX_VERSION(3, 4, 20) +namespace std { + + /* We shouldn't be throwing exceptions at all, but it sadly turns out + we call STL (inline) functions that do. */ + void __throw_out_of_range_fmt(char const* fmt, ...) + { + va_list ap; + char buf[1024]; // That should be big enough. + + va_start(ap, fmt); + vsnprintf(buf, sizeof(buf), fmt, ap); + buf[sizeof(buf) - 1] = 0; + va_end(ap); + + __throw_range_error(buf); + } + +} +#endif + +#if MOZ_LIBSTDCXX_VERSION >= GLIBCXX_VERSION(3, 4, 20) +/* Technically, this symbol is not in GLIBCXX_3.4.20, but in CXXABI_1.3.8, + but that's equivalent, version-wise. Those calls are added by the compiler + itself on `new Class[n]` calls. */ +extern "C" void +__cxa_throw_bad_array_new_length() +{ + MOZ_CRASH(); +} +#endif + +#if MOZ_LIBSTDCXX_VERSION >= GLIBCXX_VERSION(3, 4, 21) +/* While we generally don't build with exceptions, we have some host tools + * that do use them. libstdc++ from GCC 5.0 added exception constructors with + * char const* argument. Older versions only have a constructor with + * std::string. */ +namespace std { + runtime_error::runtime_error(char const* s) + : runtime_error(std::string(s)) + { + } +} +#endif -- cgit v1.2.3