Description of problem:

  The annobin plugin for gcc uses a new assembler pseudo-op to attach a
  section to a group.  Support for this pseudo-op is available in the
  assembler shipped with the RHEL-8 binutils, but not currently in the
  assembler shipped with RHEL-7.

Version-Release number of selected component (if applicable):

  2.27-37

How reproducible:

  100%

Steps to Reproduce:
1. Assemble this file:
---------------------------------------------
	.pushsection .gnu.build.attributes..text.destructor_func, "G", %note, .text.destructor_func.group
	.balign 4
	.dc.l 12
	.dc.l 16
	.dc.l 0x101
	.dc.b 0x47, 0x41, 0x2a, 0x6, 0x12, 0, 0, 0, 0x11, 0, 0xc, 0 
	.quad .annobin_destructor_func.start
	.quad .annobin_destructor_func.end
	.popsection

	.section	.text.destructor_func,"ax",@progbits
	.type	destructor_func, @function
destructor_func:
.LFB11:
	.cfi_startproc
	pushq	%rbp
	.cfi_def_cfa_offset 16
	.cfi_offset 6, -16
	movq	%rsp, %rbp
	.cfi_def_cfa_register 6
	movl	$0, disabled(%rip)
	nop
	popq	%rbp
	.cfi_def_cfa 7, 8
	ret
	.cfi_endproc
.LFE11:
	.size	destructor_func, .-destructor_func

	.pushsection .text.destructor_func
	.attach_to_group .text.destructor_func.group
	.popsection
-------------------------------------

Actual results:

  % as attach.s
  attach.s: Assembler messages:
  attach.s:31: Error: unknown pseudo-op: `.attach_to_group'


Expected results:

  % as attach.s
  %

Additional info:

The file binutils-attach-to-group.patch in the RHEL-8 binutils srpm contains
the patch for RHEL-8.  All that should be necessary is to backport this patch
to RHEL-7.