[Bug mi/19321] New: MI pretty printing -var-list-children segfaults

["xdegaye at gmail dot com" <sourceware-bugzilla at sourceware dot org>]

https://sourceware.org/bugzilla/show_bug.cgi?id=19321

            Bug ID: 19321
           Summary: MI pretty printing -var-list-children segfaults
           Product: gdb
           Version: 7.10
            Status: NEW
          Severity: normal
          Priority: P2
         Component: mi
          Assignee: unassigned at sourceware dot org
          Reporter: xdegaye at gmail dot com
  Target Milestone: ---

gdb 7.10 segfaults after deleting the varobj child of a vector with one
element.

The last part of the debugging session:

(gdb)
~"8\t    v.push_back(3);\n"
*stopped,reason="end-stepping-range",frame={addr="0x0000000000400b35",func="main",args=[],file="pret
ty-printing.cc",fullname="/home/xavier/src/pyclewn/pyclewn-hg-working/testsuite/pretty-printing.cc",
line="8"},thread-id="1",stopped-threads="all",core="1"
(gdb)
-enable-pretty-printing
^done
(gdb)
-var-create var1 * "v"
^done,name="var1",numchild="0",value="{...}",type="std::vector<int,
std::allocator<int> >",thread-id
="1",displayhint="array",dynamic="1",has_more="1"
(gdb)
-var-list-children var1
^done,numchild="1",displayhint="array",children=[child={name="var1.[0]",exp="[0]",numchild="0",type=
"int",thread-id="1"}],has_more="0"
(gdb)
-var-delete var1.[0]
^done,ndeleted="1"
(gdb)
-var-list-children var1
Segmentation fault (core dumped)


And the source code:

#include <vector>
#include <string>

int main()
{
     std::vector<int> v;
     v.push_back(2);
     v.push_back(3);
     return 0;
}

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