[Bug gdb/34288] gdb accepts invalid DW_OP_bra / DW_OP_skip branch targets

https://sourceware.org/bugzilla/show_bug.cgi?id=34288

--- Comment #5 from Simon Marchi <simark at simark dot ca> ---
(In reply to Tom Tromey from comment #4)
> (In reply to Simon Marchi from comment #3)
> 
> > Detecting whether the expression jumps in the middle of an instruction, I
> > think it would be more difficult and not as important.  If the expression is
> > buggy, well, it will yield bogus results.
> 
> If you were really motivated you could write expressions where the bytes
> have double meaning and branching to the middle would work fine, a la
> Mel the Real Programmer.  I think for gimli I wrote some tests like this.

Right, just like you could do with instructions on a real CPU, so I don't think
we should prevent that.

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