[Bug ld/20221] [avr] Wrong code generated with linker relaxation for source with alignment directives

[senthil.thecoder at gmail dot com]

https://sourceware.org/bugzilla/show_bug.cgi?id=20221

--- Comment #2 from Senthil Kumar Selvaraj <senthil.thecoder at gmail dot com> 
---
There's another related testcase that fails even with or without the current
fix in master. It fails on binutils-2_26 branch too.

.text
.global _start, dest
_start: 
  jmp dest
  .align        1
dest:
  nop
  rjmp dest


With 

$ avr-gcc -mmcu=atmega1280 -Os -mrelax test.s -nostartfiles
$ avr-objdump -S a.out

00000000 <__ctors_end>:
   0:   00 c0           rjmp    .+0             ; 0x2 <dest>

00000002 <dest>:
   2:   00 00           nop
   4:   00 c0           rjmp    .+0             ; 0x6 <_etext>

which is obviously wrong.

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