【发布时间】：2014-11-25 12:36:10
【问题描述】：
我正在使用 c++0x 标志在多个平台上编译一个项目。我唯一遇到问题的平台是 Mac。它似乎对其他编译器让滑的事情感到不安。我正在使用 Mac 10.8、Qt 5.3.2 和以下版本的 clang。
clang -v
Apple LLVM version 5.1 (clang-503.0.40) (based on LLVM 3.4svn)
Target: x86_64-apple-darwin12.5.0
Thread model: posix
这是它产生的错误。
In file included from src/qt/bitcoin.cpp:5:
In file included from ../../Qt5.3.2/5.3/clang_64/lib/QtWidgets.framework/Versions/5/Headers/QApplication:1:
In file included from ../../Qt5.3.2/5.3/clang_64/lib/QtWidgets.framework/Versions/5/Headers/qapplication.h:45:
In file included from /Users/user/Qt5.3.2/5.3/clang_64/lib/QtCore.framework/Headers/qcoreapplication.h:45:
In file included from /Users/user/Qt5.3.2/5.3/clang_64/lib/QtCore.framework/Headers/qglobal.h:78:
In file included from /Users/user/Qt5.3.2/5.3/clang_64/lib/QtCore.framework/Headers/qcompilerdetection.h:846:
/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/../lib/c++/v1/utility:254:9: error: field has incomplete type 'CScript'
_T2 second;
^
/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/../lib/c++/v1/type_traits:1994:27: note: in instantiation of template class 'std::__1::pair<const CScriptID, CScript>'
requested here
decltype(__is_constructible_test(declval<_Tp>(), declval<_Args>()...))
^
/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/../lib/c++/v1/type_traits:2043:14: note: in instantiation of template class 'std::__1::__is_constructible<false,
std::__1::allocator<std::__1::pair<const CScriptID, CScript> >>' requested here
: public __is_constructible<is_scalar<_Tp>::value || is_reference<_Tp>::value,
^
/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/../lib/c++/v1/type_traits:2069:14: note: in instantiation of template class
'std::__1::__is_constructible_void_check<false, std::__1::allocator<std::__1::pair<const CScriptID, CScript> >>' requested here
: public __is_constructible_void_check<__contains_void<_Tp, _Args...>::value
^
/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/../lib/c++/v1/type_traits:2549:34: note: in instantiation of template class
'std::__1::is_constructible<std::__1::allocator<std::__1::pair<const CScriptID, CScript> >>' requested here
: __is_nothrow_constructible<is_constructible<_Tp, _Args...>::value, _Tp, _Args...>
^
/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/../lib/c++/v1/type_traits:2671:14: note: in instantiation of template class
'std::__1::is_nothrow_constructible<std::__1::allocator<std::__1::pair<const CScriptID, CScript> >>' requested here
: public is_nothrow_constructible<_Tp>
^
/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/../lib/c++/v1/map:840:13: note: in instantiation of template class
'std::__1::is_nothrow_default_constructible<std::__1::allocator<std::__1::pair<const CScriptID, CScript> > >' requested here
is_nothrow_default_constructible<allocator_type>::value &&
^
/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/../lib/c++/v1/__config:332:34: note: expanded from macro '_NOEXCEPT_'
# define _NOEXCEPT_(x) noexcept(x)
^
src/keystore.h:43:7: note: in instantiation of exception specification for 'map' requested here
class CBasicKeyStore : public CKeyStore
^
src/serialize.h:28:7: note: forward declaration of 'CScript'
class CScript;
^
src/keystore.h:116:5: note: implicit default constructor for 'CBasicKeyStore' first required here
CCryptoKeyStore() : fUseCrypto(false)
^
【问题讨论】：
-
向我们展示生成错误的代码（有足够的上下文）。另外：尝试更新您的工具链（Clang 和 libc++），这可能是其中一个已经修复的错误。