[Bug default/26771] New: abidw crashes reading /lib64/libclang-cpp.so.10

[Bug default/26771] New: abidw crashes reading /lib64/libclang-cpp.so.10

[woodard at redhat dot com]

https://sourceware.org/bugzilla/show_bug.cgi?id=26771

            Bug ID: 26771
           Summary: abidw crashes reading /lib64/libclang-cpp.so.10
           Product: libabigail
           Version: unspecified
            Status: NEW
          Severity: normal
          Priority: P2
         Component: default
          Assignee: dodji at redhat dot com
          Reporter: woodard at redhat dot com
                CC: libabigail at sourceware dot org
  Target Milestone: ---

[ben@alien dwqual]$ gdb --silent --args abidw /lib64/libclang-cpp.so.10 
Reading symbols from abidw...
Reading symbols from /usr/lib/debug/usr/bin/abidw-1.7-1.fc32.x86_64.debug...
(gdb) r
Starting program: /usr/bin/abidw /lib64/libclang-cpp.so.10
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib64/libthread_db.so.1".

Program received signal SIGSEGV, Segmentation fault.
0x00007ffff7645005 in dwarf_dieoffset () from /lib64/libdw.so.1
(gdb) bt
#0  0x00007ffff7645005 in dwarf_dieoffset () from /lib64/libdw.so.1
#1  0x00007ffff7ec34f1 in
abigail::dwarf_reader::imported_unit_point::imported_unit_point
(from=<optimized out>, imported_die=..., import_off=<optimized out>, 
    this=0x7fffffffa2a0) at abg-dwarf-reader.cc:258
#2  abigail::dwarf_reader::read_context::build_die_parent_relations_under
(this=0x555555585a90, die=0x7fffffffa370, 
    source=abigail::dwarf_reader::PRIMARY_DEBUG_INFO_DIE_SOURCE,
imported_units=std::vector of length 0, capacity 0) at abg-dwarf-reader.cc:9194
#3  0x00007ffff7ec395b in
abigail::dwarf_reader::read_context::build_die_parent_maps
(this=this@entry=0x555555585a90) at abg-dwarf-reader.cc:9329
#4  0x00007ffff7eb5c22 in abigail::dwarf_reader::read_debug_info_into_corpus
(ctxt=...) at abg-dwarf-reader.cc:17275
#5  abigail::dwarf_reader::read_corpus_from_elf (ctxt=...,
status=@0x7fffffffa70c: abigail::dwarf_reader::STATUS_UNKNOWN) at
abg-dwarf-reader.cc:18481
#6  0x0000555555559e8f in load_corpus_and_write_abixml (opts=...,
context=std::shared_ptr<abigail::dwarf_reader::read_context> (use count 1, weak
count 0) = {...}, 
    env=std::shared_ptr<abigail::ir::environment> (use count 1, weak count 0) =
{...}, argv=0x7fffffffae58) at abidw.cc:415
#7  main (argc=<optimized out>, argv=<optimized out>) at abidw.cc:783

$ rpm -q libabigail
libabigail-1.7-1.fc32.x86_64
$ rpm -qf /lib64/libclang-cpp.so.10
clang-libs-10.0.1-2.fc32.x86_64

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[Bug default/26771] abidw crashes reading /lib64/libclang-cpp.so.10

[woodard at redhat dot com]

https://sourceware.org/bugzilla/show_bug.cgi?id=26771

--- Comment #1 from Ben Woodard <woodard at redhat dot com> ---
The problem reproduces with the current trunk of libabigail as of
247f50dbf3761ca0fc842abba753cbf52bf4291c 

The following libraries continue to exhibit the problem. 
/lib64/libmedfwrap.so.11.0.1 from med-4.1.0-1.fc33.x86_64
/lib64/libmedC.so.11.0.1     from med-4.1.0-1.fc33.x86_64
/lib64/libGLU.so.1.3.1       from mesa-libGLU-9.0.1-3.fc33.x86_64

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[Bug default/26771] abidw crashes reading /lib64/libclang-cpp.so.10

[woodard at redhat dot com]

https://sourceware.org/bugzilla/show_bug.cgi?id=26771

--- Comment #2 from Ben Woodard <woodard at redhat dot com> ---
With the trunk version of libabigail this appears to be a slightly different
bug. It asserts rather than crashes. With the trunk version abidw doesn't segv
when processing /lib64/libclang-cpp.so.11

abidw: ../../../libabigail/src/abg-dwarf-reader.cc:13223: void
abigail::dwarf_reader::finish_member_function_reading(Dwarf_Die*, const
function_decl_sptr&, const class_or_union_sptr&,
abigail::dwarf_reader::read_context&): Assertion `__abg_cond__' failed.

Program received signal SIGABRT, Aborted.
__GI_raise (sig=<optimized out>) at ../sysdeps/unix/sysv/linux/raise.c:49
49        return ret;
(gdb) bt
#0  __GI_raise (sig=<optimized out>) at ../sysdeps/unix/sysv/linux/raise.c:49
#1  0x00007ffff75098a4 in __GI_abort () at abort.c:79
#2  0x00007ffff7509789 in __assert_fail_base (fmt=0x7ffff7676e68 "%s%s%s:%u:
%s%sAssertion `%s' failed.\n%n", assertion=0x7ffff7f3bfa4 "__abg_cond__", 
    file=0x7ffff7f49938 "../../../libabigail/src/abg-dwarf-reader.cc",
line=13223, function=<optimized out>) at assert.c:92
#3  0x00007ffff7518fc6 in __GI___assert_fail (assertion=0x7ffff7f3bfa4
"__abg_cond__", file=0x7ffff7f49938
"../../../libabigail/src/abg-dwarf-reader.cc", line=13223, 
    function=0x7ffff7f4a758 "void
abigail::dwarf_reader::finish_member_function_reading(Dwarf_Die*, const
function_decl_sptr&, const class_or_union_sptr&,
abigail::dwarf_reader::read_context&)") at assert.c:101
#4  0x00007ffff7ecc634 in abigail::dwarf_reader::finish_member_function_reading
(die=0x7fffffffa450, f=
    std::shared_ptr<class abigail::ir::function_decl> (use count 3, weak count
0) = {...}, 
    klass=std::shared_ptr<class abigail::ir::class_or_union> (use count 2, weak
count 0) = {...}, ctxt=...) at /usr/include/c++/10/ext/atomicity.h:84
#5  0x00007ffff7ed2254 in abigail::dwarf_reader::build_ir_node_from_die
(ctxt=..., die=0x7fffffffa450, scope=0xb92260,
called_from_public_decl=<optimized out>, 
    where_offset=117049, is_declaration_only=<optimized out>,
is_required_decl_spec=false) at /usr/include/c++/10/bits/shared_ptr_base.h:736
#6  0x00007ffff7ee0450 in abigail::dwarf_reader::add_or_update_member_function
(where_offset=117049, called_from_public_decl=true, 
    class_type=std::shared_ptr<class abigail::ir::class_or_union> (use count 9,
weak count 5) = {...}, function_die=0x7fffffffa450, ctxt=...)
    at /usr/include/c++/10/bits/shared_ptr_base.h:1324
#7  abigail::dwarf_reader::add_or_update_class_type (ctxt=...,
die=0x7fffffffaa10, scope=<optimized out>, is_struct=<optimized out>,
klass=..., 
    called_from_public_decl=true, where_offset=117049,
is_declaration_only=false) at ../../../libabigail/src/abg-dwarf-reader.cc:13870
#8  0x00007ffff7ed1c7b in abigail::dwarf_reader::build_ir_node_from_die
(ctxt=..., die=0x7fffffffaa10, scope=0x7aff20,
called_from_public_decl=<optimized out>, 
    where_offset=117049, is_declaration_only=false,
is_required_decl_spec=false) at /usr/include/c++/10/bits/shared_ptr_base.h:619
#9  0x00007ffff7ed3770 in abigail::dwarf_reader::build_ir_node_from_die
(ctxt=..., die=0x7fffffffaa10, called_from_public_decl=<optimized out>,
where_offset=117049)
    at /usr/include/c++/10/bits/shared_ptr_base.h:1324
#10 0x00007ffff7ee0dac in abigail::dwarf_reader::add_or_update_class_type
(ctxt=..., die=0x7fffffffaf90, scope=<optimized out>, is_struct=<optimized
out>, klass=..., 
    called_from_public_decl=true, where_offset=117049,
is_declaration_only=false) at ../../../libabigail/src/abg-dwarf-reader.cc:13753
#11 0x00007ffff7ed1c7b in abigail::dwarf_reader::build_ir_node_from_die
(ctxt=..., die=0x7fffffffaf90, scope=0x7aff20,
called_from_public_decl=<optimized out>, 
    where_offset=117049, is_declaration_only=false,
is_required_decl_spec=false) at /usr/include/c++/10/bits/shared_ptr_base.h:619
#12 0x00007ffff7ed3770 in abigail::dwarf_reader::build_ir_node_from_die
(ctxt=..., die=0x7fffffffaf90, called_from_public_decl=<optimized out>,
where_offset=117049)
    at /usr/include/c++/10/bits/shared_ptr_base.h:1324
#13 0x00007ffff7ee0dac in abigail::dwarf_reader::add_or_update_class_type
(ctxt=..., die=0x7fffffffb480, scope=<optimized out>, is_struct=<optimized
out>, klass=..., 
    called_from_public_decl=true, where_offset=117049,
is_declaration_only=false) at ../../../libabigail/src/abg-dwarf-reader.cc:13753
#14 0x00007ffff7ed1c7b in abigail::dwarf_reader::build_ir_node_from_die
(ctxt=..., die=0x7fffffffb480, scope=0xb8f3c0,
called_from_public_decl=<optimized out>, 
    where_offset=117049, is_declaration_only=false,
is_required_decl_spec=false) at /usr/include/c++/10/bits/shared_ptr_base.h:619
#15 0x00007ffff7edfe51 in abigail::dwarf_reader::add_or_update_class_type
(ctxt=..., die=0x7fffffffbac0, scope=<optimized out>, is_struct=<optimized
out>, klass=..., 
    called_from_public_decl=true, where_offset=117049,
is_declaration_only=false) at /usr/include/c++/10/bits/shared_ptr_base.h:1324
#16 0x00007ffff7ed1c7b in abigail::dwarf_reader::build_ir_node_from_die
(ctxt=..., die=0x7fffffffbac0, scope=0x7aff20,
called_from_public_decl=<optimized out>, 
    where_offset=117049, is_declaration_only=false,
is_required_decl_spec=false) at /usr/include/c++/10/bits/shared_ptr_base.h:619
#17 0x00007ffff7ed3770 in abigail::dwarf_reader::build_ir_node_from_die
(ctxt=..., die=0x7fffffffbac0, called_from_public_decl=<optimized out>,
where_offset=117049)
    at /usr/include/c++/10/bits/shared_ptr_base.h:1324
#18 0x00007ffff7ed329c in abigail::dwarf_reader::build_typedef_type
(where_offset=117049, called_from_public_decl=true, die=0x7fffffffbcb0,
ctxt=...)
    at ../../../libabigail/src/abg-dwarf-reader.cc:15003
#19 abigail::dwarf_reader::build_ir_node_from_die (ctxt=...,
die=0x7fffffffbcb0, scope=0xb8dcf0, called_from_public_decl=<optimized out>,
where_offset=117049, 
    is_declaration_only=<optimized out>, is_required_decl_spec=false) at
../../../libabigail/src/abg-dwarf-reader.cc:16351
#20 0x00007ffff7edfe51 in abigail::dwarf_reader::add_or_update_class_type
(ctxt=..., die=0x7fffffffc270, scope=<optimized out>, is_struct=<optimized
out>, klass=..., 
    called_from_public_decl=true, where_offset=117049,
is_declaration_only=false) at /usr/include/c++/10/bits/shared_ptr_base.h:1324
#21 0x00007ffff7ed1c7b in abigail::dwarf_reader::build_ir_node_from_die
(ctxt=..., die=0x7fffffffc270, scope=0x7aff20,
called_from_public_decl=<optimized out>, 
    where_offset=117049, is_declaration_only=false,
is_required_decl_spec=false) at /usr/include/c++/10/bits/shared_ptr_base.h:619
#22 0x00007ffff7ed3770 in abigail::dwarf_reader::build_ir_node_from_die
(ctxt=..., die=0x7fffffffc270, called_from_public_decl=<optimized out>,
where_offset=117049)
    at /usr/include/c++/10/bits/shared_ptr_base.h:1324
#23 0x00007ffff7ee0dac in abigail::dwarf_reader::add_or_update_class_type
(ctxt=..., die=0x7fffffffc870, scope=<optimized out>, is_struct=<optimized
out>, klass=..., 
    called_from_public_decl=true, where_offset=117049,
is_declaration_only=false) at ../../../libabigail/src/abg-dwarf-reader.cc:13753
#24 0x00007ffff7ed1c7b in abigail::dwarf_reader::build_ir_node_from_die
(ctxt=..., die=0x7fffffffc870, scope=0x7aff20,
called_from_public_decl=<optimized out>, 
    where_offset=117049, is_declaration_only=false,
is_required_decl_spec=false) at /usr/include/c++/10/bits/shared_ptr_base.h:619
#25 0x00007ffff7ed3770 in abigail::dwarf_reader::build_ir_node_from_die
(ctxt=..., die=0x7fffffffc870, called_from_public_decl=<optimized out>,
where_offset=117049)
    at /usr/include/c++/10/bits/shared_ptr_base.h:1324
#26 0x00007ffff7ed1a48 in abigail::dwarf_reader::build_reference_type
(where_offset=117049, called_from_public_decl=true, die=0x7fffffffc9b0,
ctxt=...)
    at ../../../libabigail/src/abg-dwarf-reader.cc:14466
#27 abigail::dwarf_reader::build_ir_node_from_die (ctxt=...,
die=0x7fffffffc9b0, scope=0x7aff20, called_from_public_decl=<optimized out>,
where_offset=117049, 
    is_declaration_only=false, is_required_decl_spec=false) at
../../../libabigail/src/abg-dwarf-reader.cc:16383
#28 0x00007ffff7ed3770 in abigail::dwarf_reader::build_ir_node_from_die
(ctxt=..., die=0x7fffffffc9b0, called_from_public_decl=<optimized out>,
where_offset=117049)
    at /usr/include/c++/10/bits/shared_ptr_base.h:1324
#29 0x00007ffff7ed4065 in abigail::dwarf_reader::build_var_decl (ctxt=...,
die=0x7fffffffcff0, where_offset=117049, 
    result=std::shared_ptr<class abigail::ir::var_decl> (empty) = {...}) at
../../../libabigail/src/abg-dwarf-reader.cc:15149
#30 0x00007ffff7ed48ae in
abigail::dwarf_reader::build_or_get_var_decl_if_not_suppressed (ctxt=...,
scope=<optimized out>, die=0x7fffffffcff0, where_offset=117049, 
    result=std::shared_ptr<class abigail::ir::var_decl> (empty) = {...},
is_required_decl_spec=true) at /usr/include/c++/10/ext/atomicity.h:100
#31 0x00007ffff7ed17d5 in abigail::dwarf_reader::build_ir_node_from_die
(ctxt=..., die=0x7fffffffcff0, scope=0x7aff20,
called_from_public_decl=<optimized out>, 
    where_offset=117049, is_declaration_only=false, is_required_decl_spec=true)
at /usr/include/c++/10/bits/shared_ptr_base.h:619
--Type <RET> for more, q to quit, c to continue without paging--c
#32 0x00007ffff7ecfc75 in abigail::dwarf_reader::build_ir_node_from_die
(ctxt=..., die=0x7fffffffd1d0, scope=0x7aff20,
called_from_public_decl=<optimized out>, where_offset=117049,
is_declaration_only=false, is_required_decl_spec=false) at
../../../libabigail/src/abg-dwarf-reader.cc:16623
#33 0x00007ffff7ed3770 in abigail::dwarf_reader::build_ir_node_from_die
(ctxt=..., die=0x7fffffffd1d0, called_from_public_decl=<optimized out>,
where_offset=117049) at /usr/include/c++/10/bits/shared_ptr_base.h:1324
#34 0x00007ffff7ee3080 in
abigail::dwarf_reader::build_translation_unit_and_add_to_ir (ctxt=...,
die=<optimized out>, address_size=<optimized out>) at
../../../libabigail/src/abg-dwarf-reader.cc:8556
#35 0x00007ffff7ee4f3a in abigail::dwarf_reader::read_debug_info_into_corpus
(ctxt=...) at ../../../libabigail/src/abg-dwarf-reader.cc:15936
#36 abigail::dwarf_reader::read_corpus_from_elf (ctxt=...,
status=@0x7fffffffd40c: abigail::dwarf_reader::STATUS_UNKNOWN) at
../../../libabigail/src/abg-dwarf-reader.cc:17149
#37 0x0000000000405c93 in load_corpus_and_write_abixml (opts=...,
context=std::shared_ptr<class abigail::dwarf_reader::read_context> (use count
1, weak count 0) = {...}, env=std::shared_ptr<class abigail::ir::environment>
(use count 1, weak count 0) = {...}, argv=0x7fffffffd958) at
../../../libabigail/tools/abidw.cc:494
#38 main (argc=<optimized out>, argv=0x7fffffffd958) at
../../../libabigail/tools/abidw.cc:866
(gdb)

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[Bug default/26771] abidw crashes reading /lib64/libclang-cpp.so.10

[dodji at redhat dot com]

https://sourceware.org/bugzilla/show_bug.cgi?id=26771

--- Comment #3 from dodji at redhat dot com ---
Thanks for reporting this problem.

Would it be possible to have the exact binary and its associated debug info so
that I can look into this?

Thanks.

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[Bug default/26771] abidw crashes reading /lib64/libclang-cpp.so.10

[maennich at android dot com]

https://sourceware.org/bugzilla/show_bug.cgi?id=26771

Matthias Maennich <maennich at android dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |maennich at android dot com

--- Comment #4 from Matthias Maennich <maennich at android dot com> ---
FWIW, this Dockerfile describes the container to reproduce the issues in the
recently opened bugs:

$ cat Dockerfile

FROM registry.fedoraproject.org/fedora

RUN yum -y install libabigail
RUN dnf -y install 'dnf-command(debuginfo-install)'
RUN dnf -y debuginfo-install libabigail




# Then run the container build and run with:
$ docker build -t fedora . && docker run -ti fedora


Inside the container
# abidw /lib64/libabigail.so.0.0.0 > test.xml
# abidiff test.xml /lib64/libabigail.so.0.0.0


That is an easy way to get all different packages that expose problematic
behaviour.

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[Bug default/26771] abidw crashes reading /lib64/libclang-cpp.so.10

[gprocida+abigail at google dot com]

https://sourceware.org/bugzilla/show_bug.cgi?id=26771

Giuliano Procida <gprocida+abigail at google dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |gprocida+abigail at google dot com

--- Comment #5 from Giuliano Procida <gprocida+abigail at google dot com> ---
I'm taking a look at this one.

test.xml is lacking a definition of type-id-12787 in my version.

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[Bug default/26771] abidw crashes reading /lib64/libclang-cpp.so.10

[maennich at android dot com]

https://sourceware.org/bugzilla/show_bug.cgi?id=26771

Matthias Maennich <maennich at android dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Assignee|dodji at redhat dot com            |gprocida+abigail at google dot com

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[Bug default/26771] abidw crashes reading /lib64/libclang-cpp.so.10

[maennich at android dot com]

https://sourceware.org/bugzilla/show_bug.cgi?id=26771

Matthias Maennich <maennich at android dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |ASSIGNED

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[Bug default/26771] abidw crashes reading /lib64/libclang-cpp.so.10

[gprocida+abigail at google dot com]

https://sourceware.org/bugzilla/show_bug.cgi?id=26771

--- Comment #6 from Giuliano Procida <gprocida+abigail at google dot com> ---
mm-next builds also produce bad XML.

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[Bug default/26771] abidw crashes reading /lib64/libclang-cpp.so.10

[gprocida+abigail at google dot com]

https://sourceware.org/bugzilla/show_bug.cgi?id=26771

--- Comment #7 from Giuliano Procida <gprocida+abigail at google dot com> ---
The missing type is a templated typedef:

std::allocator_traits<std::allocator<char> >::allocator_type

const and const reference types refer to this.

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[Bug default/26771] abidw crashes reading /lib64/libclang-cpp.so.10

[dodji at redhat dot com]

https://sourceware.org/bugzilla/show_bug.cgi?id=26771

--- Comment #8 from dodji at redhat dot com ---
Hello,

"gprocida+abigail at google dot com" <sourceware-bugzilla@sourceware.org>
writes:

> test.xml is lacking a definition of type-id-12787 in my version.

Hello,

This might then be a duplicate of #26769, which I am looking at.  I have
a work-in-progress branch for it at
https://sourceware.org/git/?p=libabigail.git;a=shortlog;h=refs/heads/dodji/PR26769.

Maybe the parts of that patch that only touch the source code (and not
the test reference output changes) might help with this?

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[Bug default/26771] abidw crashes reading /lib64/libclang-cpp.so.10

[gprocida+abigail at google dot com]

https://sourceware.org/bugzilla/show_bug.cgi?id=26771

--- Comment #9 from Giuliano Procida <gprocida+abigail at google dot com> ---
I got as far as finding the scopes / canonical types weren't looking right.
This is with the libabigail.so to start off with.

In particular,

typedef std::allocator_traits<std::allocator<char> >::allocator_type

was not a canonical type in the scope containing ...::size_type and was being
omitted from the XML.

I also found I was getting 2 scopes / classes for the same thing.

With your commit (and my debug output), I see that while allocator_type is now
being emitted, the type has been split into two separate scopes:

typedef std::allocator_traits<std::allocator<char> >::const_pointer
typedef std::allocator_traits<std::allocator<char> >::difference_type
typedef std::allocator_traits<std::allocator<char> >::value_type
typedef std::allocator_traits<std::allocator<char> >::const_void_pointer
typedef std::allocator_traits<std::allocator<char> >::size_type
typedef std::allocator_traits<std::allocator<char> >::pointer

and

typedef std::allocator_traits<std::allocator<char> >::rebind_alloc
typedef std::allocator_traits<std::allocator<char> >::allocator_type

Anyway, this is almost certainly a duplicate of what you're looking at.

I'll leave libabigail.so to you and see if I can make progress on
libclang-cpp.so which is the real subject of this bug.

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[Bug default/26771] abidw crashes reading /lib64/libclang-cpp.so.10

[gprocida+abigail at google dot com]

https://sourceware.org/bugzilla/show_bug.cgi?id=26771

--- Comment #10 from Giuliano Procida <gprocida+abigail at google dot com> ---
Ben.

I've not been able to find a library in fc33 (admittedly a small Docker image
thereof) which triggers this failure in abidw (master or rpm version), so it
may have been a bug in libdw itself.

I'll try again with an fc32 image.

Giuliano.

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[Bug default/26771] abidw crashes reading /lib64/libclang-cpp.so.10

[gprocida+abigail at google dot com]

https://sourceware.org/bugzilla/show_bug.cgi?id=26771

--- Comment #11 from Giuliano Procida <gprocida+abigail at google dot com> ---
On a small fedora 32 docker image, abidw is able process every .so including
libclang-cpp.so.10.

I've not been able to reproduce this issue in either 32 or 33.

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[Bug default/26771] abidw crashes reading /lib64/libclang-cpp.so.10

[woodard at redhat dot com]

https://sourceware.org/bugzilla/show_bug.cgi?id=26771

--- Comment #12 from Ben Woodard <woodard at redhat dot com> ---
I have updated to the very latest git and have rerun many of my tests and I am
no longer able to reproduce this particular crash.

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[Bug default/26771] abidw crashes reading /lib64/libclang-cpp.so.10

[woodard at redhat dot com]

https://sourceware.org/bugzilla/show_bug.cgi?id=26771

Ben Woodard <woodard at redhat dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
         Resolution|---                         |WORKSFORME
             Status|ASSIGNED                    |RESOLVED

--- Comment #13 from Ben Woodard <woodard at redhat dot com> ---
Since this no longer reproduces. Closing WFM

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