[Bug binutils/18257] New: objdump -d crashes on kandw-instruction (x86-64)

[lukas.lueg at gmail dot com]

https://sourceware.org/bugzilla/show_bug.cgi?id=18257

            Bug ID: 18257
           Summary: objdump -d crashes on kandw-instruction (x86-64)
           Product: binutils
           Version: unspecified
            Status: NEW
          Severity: normal
          Priority: P2
         Component: binutils
          Assignee: unassigned at sourceware dot org
          Reporter: lukas.lueg at gmail dot com

Using binutils git 0ff6fcb... (2015/04/13) the following one-liner crashes with
a segmentation fault in OP_G(), i386-dic.c:15258, trying to call oappend(s=0x0)

echo "int main(){__asm__(\".byte 0xc5,0x3c,0x41\");return 0;}" | gcc -m64 -xc -
&& ~/dev/binutils-gdb/binutils/objdump -d a.out > /dev/null


binutils 2.24 disassembles this as "kandw (bad),k0,k7; cmp $0x41,%al)"

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