clang++ - 为什么 clang++ 警告 "suggest braces around initialization of subobject [-Wmissing-braces]"？

Question

我有这个代码:

#include <array>

int main(int, char **argv)
{
   std::array<int, 3> a = {1,2,3};
}

这编译得很好 (-std=c++11) ，但如果你包含 -Wall 它会给出这个我不明白的警告:

clang_pp_error.cpp:5:28: warning: suggest braces around initialization of subobject [-Wmissing-braces]
   std::array<int, 3> a = {1,2,3};
                           ^~~~~
                           {    }

Answer 1

这应该是一个错误:https://llvm.org/bugs/show_bug.cgi?id=21629 .

另见 Is it wise to ignore gcc/clang's "-Wmissing-braces" warning? .