* How to write to stderr/stdout of debuggee
@ 2023-11-10 15:06 Konstantin Kharlamov via Gdb
2023-11-13 17:47 ` Tom Tromey
0 siblings, 1 reply; 3+ messages in thread
From: Konstantin Kharlamov via Gdb @ 2023-11-10 15:06 UTC (permalink / raw)
To: gdb
My usecase is I'm debugging some plugin written in Go, and I don't have
anything language related in the visibility scope to be able to write
to stderr/stdout. Though apparently gdb does see a `write` function
(which I presume is a C write function, not Go), but executing a
p (int) write(2, "Hello", 6)
gives me a `syntax error in expression`. So anyway, I'm just wondering
if there's some built-in way to do that. I don't see a built-in $_write
function in gdb :(
P.S.: please keep me in CC, I'm not a list subscriber
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: How to write to stderr/stdout of debuggee
2023-11-10 15:06 How to write to stderr/stdout of debuggee Konstantin Kharlamov via Gdb
@ 2023-11-13 17:47 ` Tom Tromey
2023-11-13 18:10 ` Konstantin Kharlamov via Gdb
0 siblings, 1 reply; 3+ messages in thread
From: Tom Tromey @ 2023-11-13 17:47 UTC (permalink / raw)
To: Konstantin Kharlamov via Gdb; +Cc: Konstantin Kharlamov
>>>>> Konstantin Kharlamov via Gdb <gdb@sourceware.org> writes:
> My usecase is I'm debugging some plugin written in Go, and I don't have
> anything language related in the visibility scope to be able to write
> to stderr/stdout. Though apparently gdb does see a `write` function
> (which I presume is a C write function, not Go), but executing a
> p (int) write(2, "Hello", 6)
> gives me a `syntax error in expression`. So anyway, I'm just wondering
> if there's some built-in way to do that. I don't see a built-in $_write
> function in gdb :(
It's possible you have gdb in 'go' language mode.
Try 'set language c' before that print. It might help.
Tom
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: How to write to stderr/stdout of debuggee
2023-11-13 17:47 ` Tom Tromey
@ 2023-11-13 18:10 ` Konstantin Kharlamov via Gdb
0 siblings, 0 replies; 3+ messages in thread
From: Konstantin Kharlamov via Gdb @ 2023-11-13 18:10 UTC (permalink / raw)
To: Tom Tromey, Konstantin Kharlamov via Gdb
On Mon, 2023-11-13 at 10:47 -0700, Tom Tromey wrote:
> > > > > > Konstantin Kharlamov via Gdb <gdb@sourceware.org> writes:
>
> > My usecase is I'm debugging some plugin written in Go, and I don't
> > have
> > anything language related in the visibility scope to be able to
> > write
> > to stderr/stdout. Though apparently gdb does see a `write` function
> > (which I presume is a C write function, not Go), but executing a
>
> > p (int) write(2, "Hello", 6)
>
> > gives me a `syntax error in expression`. So anyway, I'm just
> > wondering
> > if there's some built-in way to do that. I don't see a built-in
> > $_write
> > function in gdb :(
>
> It's possible you have gdb in 'go' language mode.
> Try 'set language c' before that print. It might help.
>
> Tom
Haha, thanks, that worked!
^ permalink raw reply [flat|nested] 3+ messages in thread
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2023-11-10 15:06 How to write to stderr/stdout of debuggee Konstantin Kharlamov via Gdb
2023-11-13 17:47 ` Tom Tromey
2023-11-13 18:10 ` Konstantin Kharlamov via Gdb
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