[Bug gas/20842] New: Crash of AS on invalid data

[jamesmikedupont at googlemail dot com]

https://sourceware.org/bugzilla/show_bug.cgi?id=20842

            Bug ID: 20842
           Summary: Crash of AS on invalid data
           Product: binutils
           Version: 2.27
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: gas
          Assignee: unassigned at sourceware dot org
          Reporter: jamesmikedupont at googlemail dot com
  Target Milestone: ---

This line was genrated by objdump :

9f5ed5:     66 c4 01 01 66 c4       data16 vpcmpgtd %xmm12,%xmm15,%xmm8

Feeding it back to as :

regen2.asm: Assembler messages:
regen2.asm:2: Internal error, aborting at ../../gas/config/tc-i386.c:7215 in
output_insn
Please report this bug.


Here are the lines that crashed the as.

test19777:
        data16 vpcmpgtd %xmm12,%xmm15,%xmm8
test19778:
        data16 vpcmpgtd %xmm5,%xmm15,%xmm8
test19779:
        data16 movb $0x01,(%rax)
test19780:
        data16 movb $0x01,(%rcx)

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