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Re: Problem calling functions within gdb (version 7.5)
- From: Keith Seitz <keiths at redhat dot com>
- To: Saurabh T <saurabh at hotmail dot com>
- Cc: "gdb at sourceware dot org" <gdb at sourceware dot org>
- Date: Thu, 25 Apr 2013 08:09:31 -0700
- Subject: Re: Problem calling functions within gdb (version 7.5)
- References: <DUB123-W3379C1D5569CB0664A9923B1B50 at phx dot gbl>,<87r4hykai1 dot fsf at fleche dot redhat dot com> <DUB123-W1189571D83329779F4BA17B1B60 at phx dot gbl>
On 04/25/2013 07:24 AM, Saurabh T wrote:
From: tromey@redhat.com
Saurabh> 1. call fn(3, x)
Saurabh> gdb says: Cannot resolve function fn to any overloaded instance
Saurabh> This used to work with gdb 7.2. The function signature completely
Saurabh> matches the arguments so I dont know what it's complaining about.
Please file a bug report.
Done: http://sourceware.org/bugzilla/show_bug.cgi?id=15398
Thank you. This was introduced in 7.2 with support for ADL. Looks like a
bug in types_equal, which doesn't account for cv qualifiers.
Saurabh> 2. print k
Saurabh> Let's say this prints 0x7ffb24
Saurabh> call fn2(0x7ffb24)
Saurabh> gdb again says: Cannot resolve function fn2 to any overloaded instance
Saurabh> This also used to work with gdb 7.2. Here I can understand if
Saurabh> promoting ints to arbitrary pointers is no longer supported.
I was under the impression that we allowed this again, but it fails for
me too. Please file another bug for this one.
Done: http://sourceware.org/bugzilla/show_bug.cgi?id=15399
What is "show check type"? If that is enabled/non-zero, gdb will not
allow this conversion. If you disable it ("set check type 0"), it should
work:
(gdb) p fn2(0x7fffffffde14)
Cannot resolve function fn2 to any overloaded instance
(gdb) set check type 0
(gdb) p fn2(0x7fffffffde14)
3
$7 = void
Keith