[Bug fortran/18475] New: Crash on a print

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[Bug fortran/18475] New: Crash on a print

agentzh at gmail dot com
https://sourceware.org/bugzilla/show_bug.cgi?id=18475

            Bug ID: 18475
           Summary: Crash on a print
           Product: gdb
           Version: 7.9
            Status: NEW
          Severity: normal
          Priority: P2
         Component: fortran
          Assignee: unassigned at sourceware dot org
          Reporter: at_gdb at mathalacarte dot com
  Target Milestone: ---

While running ddd 3.3.12 with gdb 7.9.1 on a Fortran program I encountered
this:

(gdb) p y(nv1:lrow)
cp-namespace.c:341: internal-error: cp_search_static_and_baseclasses: Assertion
`name[prefix_len + 1] == ':'' failed.
A problem internal to GDB has been detected,
further debugging may prove unreliable.

This is a bug, please report it.  For instructions, see:
<http://bugs.gentoo.org/>.

At this point nv1 and lrow can both be printed and nv1=8 and lrow=9
p y(8:9) prints results just fine.

Just tried a similar thing with a different variable having a name ending in 1
and got the same kind of crash.  Perhaps things are grouped like <nv><1:...
instead of <nv1><:...?

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[Bug fortran/18475] "p y(nv1:lrow)" hits cp-namespace.c:341: internal-error: cp_search_static_and_baseclasses: Assertion `name[prefix_len + 1] == ':'' failed

agentzh at gmail dot com
https://sourceware.org/bugzilla/show_bug.cgi?id=18475

Mike Frysinger <vapier at gentoo dot org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |vapier at gentoo dot org
            Summary|Crash on a print            |"p y(nv1:lrow)" hits
                   |                            |cp-namespace.c:341:
                   |                            |internal-error:
                   |                            |cp_search_static_and_basecl
                   |                            |asses: Assertion
                   |                            |`name[prefix_len + 1] ==
                   |                            |':'' failed

--- Comment #1 from Mike Frysinger <vapier at gentoo dot org> ---
can you post a reduced fortran test case ?  that helps us track down and
include regression tests.

what target is this (i.e. your $CHOST) ?

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[Bug fortran/18475] "p y(nv1:lrow)" hits cp-namespace.c:341: internal-error: cp_search_static_and_baseclasses: Assertion `name[prefix_len + 1] == ':'' failed

agentzh at gmail dot com
In reply to this post by agentzh at gmail dot com
https://sourceware.org/bugzilla/show_bug.cgi?id=18475

Bochud <martin.bochud at geoazimut dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |martin.bochud at geoazimut dot com

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[Bug fortran/18475] "p y(nv1:lrow)" hits cp-namespace.c:341: internal-error: cp_search_static_and_baseclasses: Assertion `name[prefix_len + 1] == ':'' failed

agentzh at gmail dot com
In reply to this post by agentzh at gmail dot com
https://sourceware.org/bugzilla/show_bug.cgi?id=18475

Keith Seitz <keiths at redhat dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |keiths at redhat dot com

--- Comment #2 from Keith Seitz <keiths at redhat dot com> ---
(In reply to Fred Krogh from comment #0)
> While running ddd 3.3.12 with gdb 7.9.1 on a Fortran program I encountered
> this:
>
> (gdb) p y(nv1:lrow)
> cp-namespace.c:341: internal-error: cp_search_static_and_baseclasses:
> Assertion `name[prefix_len + 1] == ':'' failed.
> A problem internal to GDB has been detected,
> further debugging may prove unreliable.

Have you tried this on HEAD or 7.11.1? The patch for 18303 was committed in
March which removes this assert.

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[Bug fortran/18475] "p y(nv1:lrow)" hits cp-namespace.c:341: internal-error: cp_search_static_and_baseclasses: Assertion `name[prefix_len + 1] == ':'' failed

agentzh at gmail dot com
In reply to this post by agentzh at gmail dot com
https://sourceware.org/bugzilla/show_bug.cgi?id=18475

Sam Newbold <thrasymache at psenemos dot nu> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |thrasymache at psenemos dot nu

--- Comment #3 from Sam Newbold <thrasymache at psenemos dot nu> ---
I could also trigger the assertion in gdb 7.9, and gdb 8.2 runs properly. My
source, however, is C++.

My steps to reproduce are:
1) build rwsh, accessible at https://github.com/thrasymache/rwsh
2) gdb ./rwsh
3) break Prototype::arg_to_param
4) run
5) p argm.str()

in 7.9 it produces the above assertion, in 8.2 in produces
$1 = ".init /path/to/rwsh/rwsh"

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