is __attribute__((section(“.something”))) on a static member of a template class allowed?

问题

in the following example clang puts the respective variables in '.aaa' and '.ggg' correctly. GCC works on '.ggg' but not on '.aaa' (the static member variable of the class template).

template<int I>
struct s{
    __attribute__((section(".aaa"))) static  int a[100];
};

__attribute__((section(".ggg"))) int  b[100]; 

template<int I>
__attribute__((section(".aaa"))) int s<I>::a[100];

Is this a GCC bug or voluntary support on the part of clang?

Is there a good work around (besides making s::a a global rather than a static member)?

note: I left out the compiler version as all version of GCC on godbolt do essentially the same thing https://godbolt.org/g/E5s0mi

回答1:

the official documentation of gcc says

Use the section attribute with global variables and not local variables, as shown in the example.

local linkage = wrong? static member variables are local if the class itself is local. and i would say its local through the template declaration.

source

来源：https://stackoverflow.com/questions/42513904/is-attribute-section-something-on-a-static-member-of-a-template-class