[PATCH] Fix inline frame unwinding breakage

[Luis Machado]

Hi Andrew,

On 4/22/20 6:37 AM, Andrew Burgess wrote:
> * Luis Machado via Gdb-patches <gdb-patches@sourceware.org> [2020-04-14 18:38:36 -0300]:
> 
>> *** re-sending due to the poor choice of characters for the backtrace
>> annotations. GIT swallowed parts of it.
>>
>> There has been some breakage for aarch64-linux, arm-linux and s390-linux in
>> terms of inline frame unwinding. There may be other targets, but these are
>> the ones i'm aware of.
>>
>> The following testcases started to show numerous failures and trigger internal
>> errors in GDB after commit 1009d92fc621bc4d017029b90a5bfab16e17fde5,
>> "Find tailcall frames before inline frames".
>>
>> gdb.opt/inline-break.exp
>> gdb.opt/inline-cmds.exp
>> gdb.python/py-frame-inline.exp
>> gdb.reverse/insn-reverse.exp
>>
>> The internal errors were of this kind:
>>
>> binutils-gdb/gdb/frame.c:579: internal-error: frame_id get_frame_id(frame_info*): Assertion `fi->level == 0' failed.
> 
> I have also started seeing this assert on RISC-V, and your patch
> resolves this issue for me, so I'm keen to see this merged.

Great.

> 
> I took a look through and it all looks good to me - is there anything
> holding this back from being merged?

Not really. I was waiting for an OK before pushing it.

> 
> Thanks,
> Andrew