Hi Derek,
Say I have the pointer value of a specific G struct, how to convert it to
'struct g' (or any other form) in delve so that I can check
the details of its fields?
For example (simply utilized runtime.m0.curg to get a pointer value here)
(dlv) p &runtime.m0.curg
(**runtime.g)(0x56a140)
Just tried a few commands to convert the value back to 'struct g' or a
pointer to 'struct g'
(dlv) p (runtime.g*)(0x56b140)
Command failed: 1:12: expected operand, found ')'
(dlv) p ('runtime.g'*)(0x56b140)
Command failed: 1:2: illegal rune literal
(dlv) p ("runtime.g"*)(0x56b140)
Command failed: 1:14: expected operand, found ')'
(dlv) p ("runtime".g*)(0x56b140)
Command failed: 1:14: expected operand, found ')'
Thanks.
On Tuesday, November 12, 2019 at 2:28:12 AM UTC+8, Derek Parker wrote:
>
> Can you reply with a gist showing the exact Delve commands you are
> attempting to use and what errors are being returned?
>
> There is some more information on the expression parser here
> <https://github.com/go-delve/delve/blob/master/Documentation/cli/expr.md>.
> You can also open an issue on the Delve Github repo and we can help you out
> over there as well.
>
> On Sunday, November 10, 2019 at 11:58:24 PM UTC-8, Xiangdong JI wrote:
>>
>> Given a valid goroutine structure's pointer, say retrieving from the
>> register 'g', how can I convert it to 'struct g' in delve or gdb?
>>
>> gdb usually reports "A syntax error in expression ...", and delve issues
>> various "Command failed" message (failed to figure the proper way of
>> converting a literal, I guess).
>>
>> Thanks.
>>
>
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