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To: gdb@sourceware.org
From: Xavier de Gaye <xdegaye@gmail.com>
Subject: MI pretty printing -var-list-children segfaults
Message-ID: <565CBD10.3080501@gmail.com>
Date: Mon, 30 Nov 2015 21:18:00 -0000
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gdb 7.10 segfaults after deleting the varobj child of a vector with one
element.  Does that mean children must no be deleted ?

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;
}


Xavier