[arm] incorrect error on badly formed vst1 (r15 not allowed here)

Binary package hint: binutils

Binutils Version: 2.20.51.20100908-0ubuntu2

I missed the [ brackets off a vst1 instruction and got the error:

break.s:14: Error: r15 not allowed here -- `vst1.8 {d0,d1},r3'

I guess that's because r15 gets used as part of the encoding, but it doesn't look like the right error for the problem.

Dave

~# as break.s
break.s: Assembler messages:
break.s:14: Error: r15 not allowed here -- `vst1.8 {d0,d1},r3'

---------------------------------
# cat break.s
 .syntax unified
 .arch armv7-a
        .fpu neon

 .text
 .thumb

 .thumb_func
 .align 2
 .p2align 4,,15
 .global broken
 .type broken,%function
broken:
  vst1.8 {d0,d1}, r3

  bx lr @ goodbye
-------------------------------------