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From: Jean-Marc Saffroy <saffroy@gmail.com>
Date: Mon, 20 May 2019 14:57:00 -0000
Message-ID: <CAM5YWZfSQSVUR7JSPq=jfW5mXupVvn805jc7dNS7cJR4v4wt1Q@mail.gmail.com>
Subject: Re: Reloading pretty-printers
To: =?UTF-8?B?8J+QnQ==?= <epilys@nessuent.xyz>
Cc: gdb@sourceware.org
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Hi,

On Sun, May 19, 2019 at 3:00 PM =F0=9F=90=9D <epilys@nessuent.xyz> wrote:

> Hello,
>
> I'm writing some pretty-printers for a codebase, and when I modify the
> python files with gdb running, I can't seem to use the new version.
> giving `source $GDBINIT` or `source $PRETTYPRINTERDOTPY` gives
> `pretty-printer already registered`
>
> Is there a solution to this other than restarting gdb?
>

When I faced the same problem, I found it useful to simply generate a
random name when registering the pretty printer:

def _build_pretty_printer():
> # hack: random name allows reloading in the same gdb session!
> pp =3D gdb.printing.RegexpCollectionPrettyPrinter(
> "xxx.%d"%(random.randint(0, 1000000)))
> pp.add_printer('BIGNUM', '^bignum_st$', BNPrinter)
> return pp
>
> gdb.printing.register_pretty_printer(
> gdb.current_objfile(),
> _build_pretty_printer())
>
>
Cheers,
JM


--=20
Jean-Marc Saffroy - saffroy@gmail.com