libio/__fwritable.s

   1         .text
   2         .p2align 4,,15
   3         .globl  __fwritable
   4         .type   __fwritable, @function
   5 __fwritable:
   6         xorl    %eax, %eax
   7         testb   $8, (%rdi)
   8         sete    %al
   9         ret
  10         .size   __fwritable, .-__fwritable