关于C ++：yaml-cpp产生的编译器错误

Compiler error coming out of yaml-cpp

我正在尝试将yaml-cpp集成到项目中，但是我发现GCC出现了一些意外错误。例如：

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g++ -c -ggdb3 -ansi -Wall -Werror -pedantic-errors src/commands-tz.cpp -o obj/commands-tz.o
In file included from /usr/local/include/yaml-cpp/conversion.h:9,
from /usr/local/include/yaml-cpp/node.h:8,
from /usr/local/include/yaml-cpp/parser.h:8,
from /usr/local/include/yaml-cpp/yaml.h:8,
from src/note.h:26,
from src/commands-tz.cpp:297:
/usr/local/include/yaml-cpp/traits.h:26: error: expected identifier before ‘(’ token
/usr/local/include/yaml-cpp/traits.h:26: error: expected ‘)’ before numeric constant
/usr/local/include/yaml-cpp/traits.h:26: error: expected ‘>’ before numeric constant
/usr/local/include/yaml-cpp/traits.h:26: error: expected unqualified-id before ‘)’ token
/usr/local/include/yaml-cpp/traits.h:31: error: expected identifier before ‘(’ token
/usr/local/include/yaml-cpp/traits.h:31: error: expected ‘)’ before numeric constant
/usr/local/include/yaml-cpp/traits.h:31: error: expected ‘>’ before numeric constant
/usr/local/include/yaml-cpp/traits.h:31: error: expected unqualified-id before ‘)’ token
/usr/local/include/yaml-cpp/traits.h:34: error: expected identifier before ‘(’ token
/usr/local/include/yaml-cpp/traits.h:34: error: expected ‘)’ before numeric constant
/usr/local/include/yaml-cpp/traits.h:34: error: expected ‘>’ before numeric constant
/usr/local/include/yaml-cpp/traits.h:34: error: expected unqualified-id before ‘)’ token
/usr/local/include/yaml-cpp/traits.h:37: error: expected identifier before ‘(’ token
/usr/local/include/yaml-cpp/traits.h:37: error: expected ‘)’ before numeric constant
/usr/local/include/yaml-cpp/traits.h:37: error: expected ‘>’ before numeric constant
/usr/local/include/yaml-cpp/traits.h:37: error: expected unqualified-id before ‘)’ token
/usr/local/include/yaml-cpp/traits.h:42: error: expected identifier before ‘(’ token
/usr/local/include/yaml-cpp/traits.h:42: error: expected ‘)’ before numeric constant
/usr/local/include/yaml-cpp/traits.h:42: error: expected ‘>’ before numeric constant
/usr/local/include/yaml-cpp/traits.h:42: error: expected unqualified-id before ‘)’ token
/usr/local/include/yaml-cpp/traits.h:45: error: expected identifier before ‘(’ token
/usr/local/include/yaml-cpp/traits.h:45: error: expected ‘)’ before numeric constant
/usr/local/include/yaml-cpp/traits.h:45: error: expected ‘>’ before numeric constant
/usr/local/include/yaml-cpp/traits.h:45: error: expected unqualified-id before ‘)’ token

另一个例子：

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In file included from /usr/local/include/yaml-cpp/nodeimpl.h:8,
from /usr/local/include/yaml-cpp/node.h:139,
from /usr/local/include/yaml-cpp/parser.h:8,
from /usr/local/include/yaml-cpp/yaml.h:8,
from src/note.h:26,
from src/commands-tz.cpp:297:
/usr/local/include/yaml-cpp/nodeutil.h:9: error: expected nested-name-specifier before ‘(’ token
/usr/local/include/yaml-cpp/nodeutil.h:9: error: expected ‘)’ before numeric constant
/usr/local/include/yaml-cpp/nodeutil.h:9: error: expected ‘>’ before numeric constant
/usr/local/include/yaml-cpp/nodeutil.h:9: error: expected unqualified-id before ‘)’ token
/usr/local/include/yaml-cpp/nodeutil.h:14: error: expected nested-name-specifier before ‘(’ token
/usr/local/include/yaml-cpp/nodeutil.h:14: error: expected ‘)’ before numeric constant
/usr/local/include/yaml-cpp/nodeutil.h:14: error: expected ‘>’ before numeric constant
/usr/local/include/yaml-cpp/nodeutil.h:14: error: expected unqualified-id before ‘)’ token
/usr/local/include/yaml-cpp/nodeutil.h:19: error: expected nested-name-specifier before ‘(’ token
/usr/local/include/yaml-cpp/nodeutil.h:19: error: expected ‘)’ before numeric constant
/usr/local/include/yaml-cpp/nodeutil.h:19: error: expected ‘>’ before numeric constant
/usr/local/include/yaml-cpp/nodeutil.h:19: error: expected unqualified-id before ‘)’ token
/usr/local/include/yaml-cpp/nodeutil.h:24: error: ‘is_index_type_with_check’ is not a template
/usr/local/include/yaml-cpp/nodeutil.h:24: error: explicit specialization of non-template ‘YAML::is_index_type_with_check’

我的平台是Fedora(2.6.32内核)，GCC 4.4.1和yaml-cpp 0.2.5。还有很多很多其他错误。肉眼看，这似乎在yaml-cpp中是个问题，但是经验告诉我，我可能是有过错的人。有任何想法吗？

更新

文件traits.h包含以下内容：

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namespace YAML
{
template <typename>
struct is_numeric { enum { value = false }; };

template <> struct is_numeric <char> { enum { value = true }; };
template <> struct is_numeric <unsigned char> { enum { value = true }; };
template <> struct is_numeric <int> { enum { value = true }; };
template <> struct is_numeric <unsigned int> { enum { value = true }; };
template <> struct is_numeric <long int> { enum { value = true }; };
template <> struct is_numeric <unsigned long int> { enum { value = true }; };
template <> struct is_numeric <short int> { enum { value = true }; };
template <> struct is_numeric <unsigned short int> { enum { value = true }; };
template <> struct is_numeric <long long> { enum { value = true }; };
template <> struct is_numeric <unsigned long long> { enum { value = true }; };
template <> struct is_numeric <float> { enum { value = true }; };
template <> struct is_numeric <double> { enum { value = true }; };
template <> struct is_numeric <long double> { enum { value = true }; };

template <bool, class T = void>
struct enable_if_c {
typedef T type;
};

template <class T>
struct enable_if_c<false, T> {};

template <class Cond, class T = void>
struct enable_if : public enable_if_c<Cond::value, T> {};

template <bool, class T = void>
struct disable_if_c {
typedef T type;
};

template <class T>
struct disable_if_c<true, T> {};

template <class Cond, class T = void>
struct disable_if : public disable_if_c<Cond::value, T> {};
}

并且nodeutil.h包含：

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namespace YAML
{
template <typename T, typename U>
struct is_same_type {
enum { value = false };
};

template <typename T>
struct is_same_type<T, T> {
enum { value = true };
};

template <typename T, bool check>
struct is_index_type_with_check {
enum { value = false };
};

template <> struct is_index_type_with_check<std::size_t, false> { enum { value = true }; };

#define MAKE_INDEX_TYPE(Type) \\
template <> struct is_index_type_with_check<Type, is_same_type<Type, std::size_t>::value> { enum { value = true }; }

MAKE_INDEX_TYPE(int);
MAKE_INDEX_TYPE(unsigned);
MAKE_INDEX_TYPE(short);
MAKE_INDEX_TYPE(unsigned short);
MAKE_INDEX_TYPE(long);
MAKE_INDEX_TYPE(unsigned long);

#undef MAKE_INDEX_TYPE

template <typename T>
struct is_index_type: public is_index_type_with_check<T, false> {};

// messing around with template stuff to get the right overload for operator [] for a sequence
template <typename T, bool b>
struct _FindFromNodeAtIndex {
const Node *pRet;
_FindFromNodeAtIndex(const Node&, const T&): pRet(0) {}
};

template <typename T>
struct _FindFromNodeAtIndex<T, true> {
const Node *pRet;
_FindFromNodeAtIndex(const Node& node, const T& key): pRet(node.FindAtIndex(static_cast<std::size_t>(key))) {}
};

template <typename T>
inline const Node *FindFromNodeAtIndex(const Node& node, const T& key) {
return _FindFromNodeAtIndex<T, is_index_type< T >::value>(node, key).pRet;
}
}