gdb/602: infinite recursion while looking for a

[adarovsky at mail dot ru]

>Number:         602
>Category:       gdb
>Synopsis:       infinite recursion while looking for a
>Confidential:   no
>Severity:       critical
>Priority:       high
>Responsible:    unassigned
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Fri Jul 05 05:48:01 PDT 2002
>Closed-Date:
>Last-Modified:
>Originator:     Alexander Darovsky Jr
>Release:        gdb 5.2, and gdb 20020705
>Organization:
>Environment:
linux, but it doesn't matter, I suppose
>Description:
an infinite recursion with virtual inheritance:
gnuv3_baseclass_offset calls value_cast to get an virtual base, (gnu-v3-abi.c:396)

value_cast tries to find a struct field with baseclass search flag on search_struct_field(..., 1) (valops.c:245)

search_struct_field tries to find baseclass_offset (valops.c:2094) 
and goes to the infinite loop.
>How-To-Repeat:
g++ -g derive.cpp -o derive
gdb
file derive
b 102
r
p *t
>Fix:

>Release-Note:
>Audit-Trail:
>Unformatted:
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