[Dwarf-discuss] Expression opcode 0xD0

[Vsevolod Alekseyev]

Hi all,

 

I've got a crash report that my DWARF expression parser crashed on the
following expression blob:

 

09 03 D0 39 8C

 

That looks like DW_OP_const1s with 3 as the argument, followed by a bogus
opcode D0. It's not a valid opcode and not in the user extension area.
Anyone ever encountered this? 

 

I don't have a ton of context for the crash. I know the binary was an
AArch64 ELF, but that's about it. Don't know whether it was in a loclist or
in an attribute. There is a minor possibility that something that was not
meant to be an expression was being interpreted as one, but that's quite
unlikely; there aren't too many attributes with byte array typed values.

 

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