Why does the alignas specifier throw an error on Clang?

According to the standard, the new expression's grammar allows the alignas specifier along with other attribute specifiers to be supplied. I have seen other code using this but GCC ignores the attribute specifier, even if it is within the max alignment, and Clang throws an error.

• Is the alignas specifier actually valid within a new expression?
• If it is valid, why does Clang reject my code and why does GCC ignore my attribute no matter what alignment I request?

I am not trying to solve a specific problem, I am just trying to understand the standard.

    int* example = new alignas(16) int[2];
    // alignof(std::max_align_t) = 16
    // sizeof(int) = 4, sizeof(example) = 8

GCC:

prog.cc: In function 'int main()':
prog.cc:7:41: warning: attribute ignored [-Wattributes]
    7 |     int* example = new alignas(16) int[2];
      |                                         ^
prog.cc:7:41: note: an attribute that appertains to a type-specifier is ignored

Clang:

 prog.cc:7:24: error: an attribute list cannot appear here:
               int* example = new alignas(16) int[2];