[Bug default/29934] New: abidiff coredump at abg-comparison.cc:ensure_lookup_tables_populated when read libdovecot-storage.so and libdovecot-sieve.so from dovecot

["hexiaole1994 at 126 dot com" <sourceware-bugzilla@sourceware.org>]

https://sourceware.org/bugzilla/show_bug.cgi?id=29934

            Bug ID: 29934
           Summary: abidiff coredump at
                    abg-comparison.cc:ensure_lookup_tables_populated when
                    read libdovecot-storage.so and libdovecot-sieve.so
                    from dovecot
           Product: libabigail
           Version: unspecified
            Status: UNCONFIRMED
          Severity: critical
          Priority: P2
         Component: default
          Assignee: dodji at redhat dot com
          Reporter: hexiaole1994 at 126 dot com
                CC: libabigail at sourceware dot org
  Target Milestone: ---

[Overview]
Executing 'abidiff' against to 'libc.so' from centos7.6's 'glibc' will cause
coredump, the output from 'bt' command of 'gdb' shows below:
/* gdb output for 'libdovecot-storage.so' begin */
(gdb) bt
#0  0x0000fffc0df966e0 in raise () from /lib64/libc.so.6
#1  0x0000fffc0df97a8c in abort () from /lib64/libc.so.6
#2  0x0000fffc0df8fb8c in ?? () from /lib64/libc.so.6
#3  0x0000fffc0df8fc0c in __assert_fail () from /lib64/libc.so.6
#4  0x0000fffc0e80ae88 in
abigail::comparison::class_or_union_diff::ensure_lookup_tables_populated
(this=this@entry=0x15602410) at abg-comparison.cc:4520
#5  0x0000fffc0e8027dc in
abigail::comparison::class_diff::ensure_lookup_tables_populated
(this=0x15602410) at abg-comparison.cc:5175
#6  0x0000fffc0e80416c in abigail::comparison::compute_diff
(first=std::shared_ptr (count 17, weak 15) 0x1372e400, second=std::shared_ptr
(count 29, weak 35) 0x13a61eb0,
    ctxt=std::shared_ptr (count 17, weak 3407) 0x12f52be0) at
abg-comparison.cc:5756
...
#15 0x0000fffc0e807430 in abigail::comparison::compute_diff
(first=std::shared_ptr (count 2, weak 0) 0x1400c2e0, second=std::shared_ptr
(count 2, weak 0) 0x15249250,
    ctxt=std::shared_ptr (count 17, weak 3407) 0x12f52be0) at
abg-comparison.cc:7118
#16 0x0000fffc0e80cdf4 in
abigail::comparison::corpus_diff::priv::ensure_lookup_tables_populated
(this=0x13bc1e50) at abg-comparison.cc:8811
#17 0x0000fffc0e80e9dc in abigail::comparison::compute_diff (f=std::shared_ptr
(count 3, weak 0) 0x12f523c0, s=std::shared_ptr (count 3, weak 0) 0x1491a920,
    ctxt=std::shared_ptr (count 17, weak 3407) 0x12f52be0) at
abg-comparison.cc:11019
#18 0x0000000000406148 in main (argc=<optimized out>, argv=<optimized out>) at
abidiff.cc:1409
/* gdb output end */
(the backtrace of 'libdovecot-sieve.so' is similar as 'libdovecot-storage.so',
thus it was skipped here.)

[Steps to Reproduce]
(1)confirm that we at the latest master branch
# git remote -v
origin  git://sourceware.org/git/libabigail.git (fetch)
origin  git://sourceware.org/git/libabigail.git (push)
# git branch
* master
# git log -5 --oneline
83bbc679 (HEAD -> master, origin/master, origin/HEAD) elf-reader: reclaim fd
and mem before break
e1aadfa5 Bug 29901 - abidiff hangs when comparing libgs.so.10 with itself
3c6a461b Update website documentation for 2.2
73d8782c configure: Bump version number to 2.3
7a7a00c3 ChangeLog: Update for 2.2 release
# ./configure
# make
(2)assure the newly compiled 'abidiff' is linked to the newly compiled
'libabigail.so'
# pwd
/root/tmp/libabigail-git
# ldd tools/.libs/abidiff
        ...
        libabigail.so.1 => /root/tmp/libabigail-git/src/.libs/libabigail.so.1
(0x0000fffbca4b0000)
        ...
(3)download 'libdovecot-storage.so' and 'libdovecot-sieve.so'
# mkdir dovecot/ && cd dovecot/
# wget
https://vault.centos.org/7.6.1810/os/x86_64/Packages/dovecot-2.2.36-3.el7.x86_64.rpm
# wget
http://debuginfo.centos.org/7/x86_64/dovecot-debuginfo-2.2.36-3.el7.x86_64.rpm
# wget
https://repo.huaweicloud.com/openeuler/openEuler-20.03-LTS-SP2/everything/x86_64/Packages/dovecot-2.3.10.1-6.oe1.x86_64.rpm
# wget
https://repo.huaweicloud.com/openeuler/openEuler-20.03-LTS-SP2/debuginfo/x86_64/Packages/dovecot-debuginfo-2.3.10.1-6.oe1.x86_64.rpm
# mkdir 2.2.36-with-debug/ 2.2.36-without-debug/ 2.3.10-with-debug/
2.3.10-without-debug/
# rpm2cpio dovecot-2.2.36-3.el7.x86_64.rpm | cpio -idum -D
2.2.36-without-debug/
# rpm2cpio dovecot-debuginfo-2.2.36-3.el7.x86_64.rpm | cpio -idum -D
2.2.36-with-debug/
# rpm2cpio dovecot-2.3.10.1-6.oe1.x86_64.rpm | cpio -idum -D
2.3.10-without-debug/
# rpm2cpio dovecot-debuginfo-2.3.10.1-6.oe1.x86_64.rpm | cpio -idum -D
2.3.10-with-debug/
# cd ../
(4)use newly compiled 'abidiff' to reproducing the problem that causes coredump
# ./tools/.libs/abidiff --d1 dovecot/2.2.36-with-debug/usr/lib/debug/ --d2
dovecot/2.3.10-with-debug/usr/lib/debug/
dovecot/2.2.36-without-debug/usr/lib64/dovecot/libdovecot-storage.so.0.0.0
dovecot/2.3.10-without-debug/usr/lib64/dovecot/libdovecot-storage.so.0.0.0
# ./tools/.libs/abidiff --d1 dovecot/2.2.36-with-debug/usr/lib/debug/ --d2
dovecot/2.3.10-with-debug/usr/lib/debug/
dovecot/2.2.36-without-debug/usr/lib64/dovecot/libdovecot-sieve.so.0.0.0
dovecot/2.3.10-without-debug/usr/lib64/dovecot/libdovecot-sieve.so.0.0.0

[Actual Results]
(1)'abidiff' for 'libdovecot-storage.so' crashes with coredump:
/* crash output begin */
abidiff: abg-comparison.cc:4521: void
abigail::comparison::class_or_union_diff::ensure_lookup_tables_populated()
const: Assertion `__abg_cond__' failed.
Aborted (core dumped)
/* crash output end */

(2)'abidiff' for 'libdovecot-sieve.so' crashes with coredump:
/* crash output begin */
abidiff: abg-comparison.cc:4521: void
abigail::comparison::class_or_union_diff::ensure_lookup_tables_populated()
const: Assertion `__abg_cond__' failed.
Aborted (core dumped)
/* crash output end */

[Expected Results]
'abidiff' finishes normally with differences between two libraries.

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