我怎麼知道在w究竟是否發生錯誤?
不是真的有visual-studio,但讓我們來看一個簡單的example:
#include <vector>
struct Foo {
Foo() = delete;
};
int main() {
std::vector<Foo> vfoo(15);
(void)vfoo;
}
GCC G ++輸出這些錯誤消息:
In file included from /usr/local/include/c++/7.1.0/vector:63:0,
from main.cpp:1:
/usr/local/include/c++/7.1.0/bits/stl_uninitialized.h: In instantiation of 'static _ForwardIterator std::__uninitialized_default_n_1<true>::__uninit_default_n(_ForwardIterator, _Size) [with _ForwardIterator = Foo*; _Size = long unsigned int]':
/usr/local/include/c++/7.1.0/bits/stl_uninitialized.h:583:20: required from '_ForwardIterator std::__uninitialized_default_n(_ForwardIterator, _Size) [with _ForwardIterator = Foo*; _Size = long unsigned int]'
/usr/local/include/c++/7.1.0/bits/stl_uninitialized.h:645:44: required from '_ForwardIterator std::__uninitialized_default_n_a(_ForwardIterator, _Size, std::allocator<_Tp>&) [with _ForwardIterator = Foo*; _Size = long unsigned int; _Tp = Foo]'
/usr/local/include/c++/7.1.0/bits/stl_vector.h:1347:36: required from 'void std::vector<_Tp, _Alloc>::_M_default_initialize(std::vector<_Tp, _Alloc>::size_type) [with _Tp = Foo; _Alloc = std::allocator<Foo>; std::vector<_Tp, _Alloc>::size_type = long unsigned int]'
/usr/local/include/c++/7.1.0/bits/stl_vector.h:285:30: required from 'std::vector<_Tp, _Alloc>::vector(std::vector<_Tp, _Alloc>::size_type, const allocator_type&) [with _Tp = Foo; _Alloc = std::allocator<Foo>; std::vector<_Tp, _Alloc>::size_type = long unsigned int; std::vector<_Tp, _Alloc>::allocator_type = std::allocator<Foo>]'
main.cpp:9:29: required from here
/usr/local/include/c++/7.1.0/bits/stl_uninitialized.h:548:37: error: use of deleted function 'Foo::Foo()'
return std::fill_n(__first, __n, _ValueType());
^~~~~~~~~~~~
main.cpp:4:5: note: declared here
Foo() = delete;
^~~
IIRC這是在Visual Studio中非常相似。只需打開原始輸出選項卡,然後轉到最後一個note
,其中可能包含真實來源的錯誤。
MSVC結果與rextester。 source_file.cpp
的最後一個註釋再次指出了錯誤的真正來源。
這是完整的錯誤嗎? –
@RetiredNinja Yup –
文檔說錯誤只發生在C代碼中。 https://docs.microsoft.com/en-us/cpp/error-messages/compiler-errors-1/compiler-error-c2088它使用了多少個地方?你可能會開始評論它們,直到找到導致它的那個。 –