clang不知道std :: atomic_bool，但XCode [英] clang doesn't know std::atomic_bool, but XCode does

问题描述

我试图编译声明一个类型为std :: atomic_bool的变量的C ++ 11代码。这是在Mac OS 10.8.2与clang：

  clang --version 
苹果clang版本4.1 Apple / clang-421.11.66）（基于LLVM 3.1svn）
目标：x86_64-apple-darwin12.2.0 
线程模型：posix 
  

clang抱怨std :: atomic_bool：

  clang ++ -c -stdlib = libc ++ -msse4 -std = c ++ 11 -Wno-unused-parameter -I。 -o query.o query.cpp 
在从query.cpp中包含的文件中：1：
 [...] 
 ./threadutils.h:33:10：错误：没有类型命名'atomic_bool'in namespace'std';你是说atomic_long吗？ 
 std :: atomic_bool work;但是，同一个文件在XCode项目中使用相同的编译器编译得很好。所以我假设我在手动编译器调用中缺少一些东西。
 
 
 
我尝试了一些变体，例如 -std = c ++ 0x 和 -std = gnu ++ 11 无效。
解决方案
我想出来了。不幸的是，我在我的问题上种了一个假标志：它在XCode中没有工作，我有一个不同版本的源文件导入。
 
 
 
问题是， C ++ 11定义了对应于指定的 atomic  的命名类型 atomic_bool ，但 clang不支持。
 
 
 
将类型从 atomic_bool 重命名为原子< bool>  / p> 
I'm trying to compile C++11 code that declares a variable of type std::atomic_bool. This is on Mac OS 10.8.2 with clang:
clang --version
Apple clang version 4.1 (tags/Apple/clang-421.11.66) (based on LLVM 3.1svn)
Target: x86_64-apple-darwin12.2.0
Thread model: posix
clang complains about std::atomic_bool:
clang++ -c -stdlib=libc++ -msse4 -std=c++11 -Wno-unused-parameter -I. -o query.o query.cpp
In file included from query.cpp:1:
[...]
./threadutils.h:33:10: error: no type named 'atomic_bool' in namespace 'std'; did you mean 'atomic_long'?
    std::atomic_bool work;
However, the same file compiles fine in an XCode project using the same compiler. So I assume I'm missing something in my manual compiler invocation.

I tried a few variations such as -std=c++0x and -std=gnu++11, to no avail.
解决方案
I figured it out. Unfortunately I planted a false flag into my question: it didn't work in XCode either, I had a different version of the source file imported there.

The problem was that C++11 defines "a named type atomic_bool corresponding to the specified atomic<bool>", but clang doesn't support that.

Renaming the type from atomic_bool to atomic<bool> fixed it.

                        
这篇关于clang不知道std :: atomic_bool，但XCode的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！