是否可以在Mountain Lion的当前Xcode 4.6.1工具链中启用_LIBCPP_DEBUG2？

时间：2013-04-09 10:50:50

标签： c++ debugging stl vmat

This thread是对clang的libc ++的调试模式的早期讨论，该模式将通过在编译器命令中定义_LIBCPP_DEBUG2来启用。刚刚与错误分配的std::vector<>进行了战斗，我有兴趣为我的调试版本打开它。

当我尝试将_LIBCPP_DEBUG=1添加到预处理器宏构建设置时，我会在链接阶段出现错误（如下所示）。我怀疑这些是由讨论主题中描述的新生成的对 debug database 的引用引起的。

在早期的讨论中，有人表示在图书馆的标准版本中存在必要的支持，但今天似乎并非如此。它仍然受到支持吗？如果是这样，我如何链接到必要的位？

Ld /Users/kaelin/Library/Developer/Xcode/DerivedData/OMWorkspace-bzkzcamyqoztgyalubrmemkzmjvk/Build/Products/Debug/vMAT.dylib normal x86_64
    cd /Users/Shared/Source/vMAT
    setenv MACOSX_DEPLOYMENT_TARGET 10.8
    /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/clang++ -arch x86_64 -dynamiclib -isysroot /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.8.sdk -L/Users/kaelin/Library/Developer/Xcode/DerivedData/OMWorkspace-bzkzcamyqoztgyalubrmemkzmjvk/Build/Products/Debug -F/Users/kaelin/Library/Developer/Xcode/DerivedData/OMWorkspace-bzkzcamyqoztgyalubrmemkzmjvk/Build/Products/Debug -F/Users/Shared/Source/vMAT/../../../kaelin/Library/Developer/Xcode/DerivedData/OMWorkspace-bzkzcamyqoztgyalubrmemkzmjvk/Build/Products/Debug -filelist /Users/kaelin/Library/Developer/Xcode/DerivedData/OMWorkspace-bzkzcamyqoztgyalubrmemkzmjvk/Build/Intermediates/vMAT.build/Debug/vMAT.build/Objects-normal/x86_64/vMAT.LinkFileList -install_name "@rpath/vMAT.dylib" -mmacosx-version-min=10.8 -fobjc-arc -fobjc-link-runtime -stdlib=libc++ -framework BlocksKit -framework Accelerate -framework Cocoa -single_module -compatibility_version 1 -current_version 1 -o /Users/kaelin/Library/Developer/Xcode/DerivedData/OMWorkspace-bzkzcamyqoztgyalubrmemkzmjvk/Build/Products/Debug/vMAT.dylib

Undefined symbols for architecture x86_64:
  "std::__1::__libcpp_db::__comparable(void const*, void const*) const", referenced from:
      NSString* (anonymous namespace)::dump<double>(NSString*, double*, int vector[4]) in vMAT_Array+UnaryOps.o
      NSString* (anonymous namespace)::dump<float>(NSString*, float*, int vector[4]) in vMAT_Array+UnaryOps.o
      signed char (anonymous namespace)::isEqualEpsilon<double>(double*, int vector[4], double*, int vector[4], double) in vMAT_Array+BinaryOps.o
      signed char (anonymous namespace)::isEqualEpsilon<float>(float*, int vector[4], float*, int vector[4], double) in vMAT_Array+BinaryOps.o
  "std::__1::__libcpp_db::__dereferenceable(void const*) const", referenced from:
      NSString* (anonymous namespace)::dump<double>(NSString*, double*, int vector[4]) in vMAT_Array+UnaryOps.o
      NSString* (anonymous namespace)::dump<float>(NSString*, float*, int vector[4]) in vMAT_Array+UnaryOps.o
      signed char (anonymous namespace)::isEqualEpsilon<double>(double*, int vector[4], double*, int vector[4], double) in vMAT_Array+BinaryOps.o
      signed char (anonymous namespace)::isEqualEpsilon<float>(float*, int vector[4], float*, int vector[4], double) in vMAT_Array+BinaryOps.o
  "std::__1::__libcpp_db::__insert_c(void*)", referenced from:
      std::__1::vector<float, std::__1::allocator<float> >::vector<float*>(float*, float*, std::__1::enable_if<__is_forward_iterator<float*>::value, void>::type*) in vMAT_Array+UnaryOps.o
      std::__1::vector<double, std::__1::allocator<double> >::vector<double*>(double*, double*, std::__1::enable_if<__is_forward_iterator<double*>::value, void>::type*) in vMAT_Array+UnaryOps.o
      std::__1::vector<float, std::__1::allocator<float> >::vector<float*>(float*, float*, std::__1::enable_if<__is_forward_iterator<float*>::value, void>::type*) in vMAT_Array+BinaryOps.o
      std::__1::vector<double, std::__1::allocator<double> >::vector<double*>(double*, double*, std::__1::enable_if<__is_forward_iterator<double*>::value, void>::type*) in vMAT_Array+BinaryOps.o
      std::__1::vector<int, std::__1::allocator<int> >::vector(unsigned long, int const&) in vMAT_inconsistent.o
      std::__1::vector<int, std::__1::allocator<int> >::vector(std::__1::vector<int, std::__1::allocator<int> > const&) in vMAT_inconsistent.o
      (anonymous namespace)::clusterOptions(NSArray*) in vMAT_cluster.o
      ...
  "std::__1::__libcpp_db::__insert_ic(void*, void const*)", referenced from:
      NSString* (anonymous namespace)::dump<double>(NSString*, double*, int vector[4]) in vMAT_Array+UnaryOps.o
      NSString* (anonymous namespace)::dump<float>(NSString*, float*, int vector[4]) in vMAT_Array+UnaryOps.o
      signed char (anonymous namespace)::isEqualEpsilon<double>(double*, int vector[4], double*, int vector[4], double) in vMAT_Array+BinaryOps.o
      signed char (anonymous namespace)::isEqualEpsilon<float>(float*, int vector[4], float*, int vector[4], double) in vMAT_Array+BinaryOps.o
  "std::__1::__libcpp_db::__erase_c(void*)", referenced from:
      NSString* (anonymous namespace)::dump<double>(NSString*, double*, int vector[4]) in vMAT_Array+UnaryOps.o
      NSString* (anonymous namespace)::dump<float>(NSString*, float*, int vector[4]) in vMAT_Array+UnaryOps.o
      signed char (anonymous namespace)::isEqualEpsilon<double>(double*, int vector[4], double*, int vector[4], double) in vMAT_Array+BinaryOps.o
      signed char (anonymous namespace)::isEqualEpsilon<float>(float*, int vector[4], float*, int vector[4], double) in vMAT_Array+BinaryOps.o
      (anonymous namespace)::traceTree(vMAT::Matrix<double>, double*, int, unsigned int) in vMAT_inconsistent.o
      ___Block_byref_object_dispose_ in vMAT_inconsistent.o
      (anonymous namespace)::Options::~Options() in vMAT_cluster.o
      ...
  "std::__1::__libcpp_db::__erase_i(void*)", referenced from:
      NSString* (anonymous namespace)::dump<double>(NSString*, double*, int vector[4]) in vMAT_Array+UnaryOps.o
      NSString* (anonymous namespace)::dump<float>(NSString*, float*, int vector[4]) in vMAT_Array+UnaryOps.o
      signed char (anonymous namespace)::isEqualEpsilon<double>(double*, int vector[4], double*, int vector[4], double) in vMAT_Array+BinaryOps.o
      signed char (anonymous namespace)::isEqualEpsilon<float>(float*, int vector[4], float*, int vector[4], double) in vMAT_Array+BinaryOps.o
  "std::__1::__get_const_db()", referenced from:
      NSString* (anonymous namespace)::dump<double>(NSString*, double*, int vector[4]) in vMAT_Array+UnaryOps.o
      NSString* (anonymous namespace)::dump<float>(NSString*, float*, int vector[4]) in vMAT_Array+UnaryOps.o
      signed char (anonymous namespace)::isEqualEpsilon<double>(double*, int vector[4], double*, int vector[4], double) in vMAT_Array+BinaryOps.o
      signed char (anonymous namespace)::isEqualEpsilon<float>(float*, int vector[4], float*, int vector[4], double) in vMAT_Array+BinaryOps.o
  "std::__1::__c_node::~__c_node()", referenced from:
      std::__1::_C_node<std::__1::vector<float, std::__1::allocator<float> > >::~_C_node() in vMAT_Array+UnaryOps.o
      std::__1::_C_node<std::__1::vector<double, std::__1::allocator<double> > >::~_C_node() in vMAT_Array+UnaryOps.o
      std::__1::_C_node<std::__1::vector<float, std::__1::allocator<float> > >::~_C_node() in vMAT_Array+BinaryOps.o
      std::__1::_C_node<std::__1::vector<double, std::__1::allocator<double> > >::~_C_node() in vMAT_Array+BinaryOps.o
      std::__1::_C_node<std::__1::vector<int, std::__1::allocator<int> > >::~_C_node() in vMAT_inconsistent.o
      std::__1::_C_node<std::__1::vector<int, std::__1::allocator<int> > >::~_C_node() in vMAT_cluster.o
      std::__1::_C_node<std::__1::vector<double, std::__1::allocator<double> > >::~_C_node() in vMAT_cluster.o
      ...
  "std::__1::__get_db()", referenced from:
      NSString* (anonymous namespace)::dump<double>(NSString*, double*, int vector[4]) in vMAT_Array+UnaryOps.o
      NSString* (anonymous namespace)::dump<float>(NSString*, float*, int vector[4]) in vMAT_Array+UnaryOps.o
      std::__1::vector<float, std::__1::allocator<float> >::vector<float*>(float*, float*, std::__1::enable_if<__is_forward_iterator<float*>::value, void>::type*) in vMAT_Array+UnaryOps.o
      std::__1::vector<double, std::__1::allocator<double> >::vector<double*>(double*, double*, std::__1::enable_if<__is_forward_iterator<double*>::value, void>::type*) in vMAT_Array+UnaryOps.o
      signed char (anonymous namespace)::isEqualEpsilon<double>(double*, int vector[4], double*, int vector[4], double) in vMAT_Array+BinaryOps.o
      signed char (anonymous namespace)::isEqualEpsilon<float>(float*, int vector[4], float*, int vector[4], double) in vMAT_Array+BinaryOps.o
      std::__1::vector<float, std::__1::allocator<float> >::vector<float*>(float*, float*, std::__1::enable_if<__is_forward_iterator<float*>::value, void>::type*) in vMAT_Array+BinaryOps.o
      ...
  "typeinfo for std::__1::__c_node", referenced from:
      typeinfo for std::__1::_C_node<std::__1::vector<float, std::__1::allocator<float> > > in vMAT_Array+UnaryOps.o
      typeinfo for std::__1::_C_node<std::__1::vector<double, std::__1::allocator<double> > > in vMAT_Array+UnaryOps.o
      typeinfo for std::__1::_C_node<std::__1::vector<float, std::__1::allocator<float> > > in vMAT_Array+BinaryOps.o
      typeinfo for std::__1::_C_node<std::__1::vector<double, std::__1::allocator<double> > > in vMAT_Array+BinaryOps.o
      typeinfo for std::__1::_C_node<std::__1::vector<int, std::__1::allocator<int> > > in vMAT_inconsistent.o
      typeinfo for std::__1::_C_node<std::__1::vector<int, std::__1::allocator<int> > > in vMAT_cluster.o
      typeinfo for std::__1::_C_node<std::__1::vector<double, std::__1::allocator<double> > > in vMAT_cluster.o
      ...
  "vtable for std::__1::__c_node", referenced from:
      std::__1::_C_node<std::__1::vector<float, std::__1::allocator<float> > >::_C_node(void*, std::__1::__c_node*) in vMAT_Array+UnaryOps.o
      std::__1::_C_node<std::__1::vector<double, std::__1::allocator<double> > >::_C_node(void*, std::__1::__c_node*) in vMAT_Array+UnaryOps.o
      std::__1::_C_node<std::__1::vector<float, std::__1::allocator<float> > >::_C_node(void*, std::__1::__c_node*) in vMAT_Array+BinaryOps.o
      std::__1::_C_node<std::__1::vector<double, std::__1::allocator<double> > >::_C_node(void*, std::__1::__c_node*) in vMAT_Array+BinaryOps.o
      std::__1::_C_node<std::__1::vector<int, std::__1::allocator<int> > >::_C_node(void*, std::__1::__c_node*) in vMAT_inconsistent.o
      std::__1::_C_node<std::__1::vector<int, std::__1::allocator<int> > >::_C_node(void*, std::__1::__c_node*) in vMAT_cluster.o
      std::__1::_C_node<std::__1::vector<double, std::__1::allocator<double> > >::_C_node(void*, std::__1::__c_node*) in vMAT_cluster.o
      ...
  NOTE: a missing vtable usually means the first non-inline virtual member function has no definition.
ld: symbol(s) not found for architecture x86_64
clang: error: linker command failed with exit code 1 (use -v to see invocation)

2 个答案:

答案 0 :(得分：2)

根据this conversation，

  

谢谢克里斯。我已经检查过这个实验性的实现。

     

-D_LIBCPP_DEBUG2

     

为您提供“标准”调试模式，包括检查   迭代器失效。

     

-D_LIBCPP_DEBUG2 = 0

     

让你“调试精简版”。这只会检查真正便宜的东西   比如你提到的那些。

     

我把门打开了：

     

-D_LIBCPP_DEBUG2 = 2

     

这将使更昂贵的支票（例如检查不变量   一棵红/黑树）但目前还没有这样做。

     

此时我仍然只专注于矢量。

     

霍华德

当我使用Xcode 5.0.x（当前最新版本的Xcode）尝试此标志时，_LIBCPP_DEBUG2=1无效，因为它需要链接到libcpp的调试支持运行时代码，该代码专门用于调试libcpp本身。但是_LIBCPP_DEBUG2=0正在工作而没有链接到调试支持运行时，并且当前为我提供了非常有用的断言，例如在空向量上调用std::vector<T>::back()。

答案 1 :(得分：1)

只是为了更新这个：以下似乎工作并至少捕捉到你想要捕获的主要错误10.9：

-D_LIBCPP_DEBUG=0

任何高于0级的内容似乎都不支持10.9中的clang ++开箱即用

相关问题
最新问题