Bug 1638989

For example during bash build:

+ /usr/lib/rpm/find-debuginfo.sh -j4 --strict-build-id -m -i --build-id-seed 4.4.23-6.fc30 --unique-debug-suffix -4.4.23-6.fc30.x86_64 --unique-debug-src-base bash-4.4.23-6.fc30.x86_64 --run-dwz --dwz-low-mem-die-limit 10000000 --dwz-max-die-limit 110000000 -S debugsourcefiles.list /home/tkloczko/rpmbuild/BUILD/bash-4.4
explicitly decompress any DWARF compressed ELF sections in /home/tkloczko/rpmbuild/BUILDROOT/bash-4.4.23-6.fc30.x86_64/usr/bin/bash
extracting debug info from /home/tkloczko/rpmbuild/BUILDROOT/bash-4.4.23-6.fc30.x86_64/usr/bin/bash

Tryiing to debug core file:

# file core.gdb.1000.33d83b83743f48789cde7ca7640ea572.9471.1539461127000000 
core.gdb.1000.33d83b83743f48789cde7ca7640ea572.9471.1539461127000000: ELF 64-bit LSB core file, x86-64, version 1 (SYSV), SVR4-style, from 'gdb --batch -nx -iex set auto-load no -ex file /home/tkloczko/rpmbuild/BUILDROO', real uid: 1000, effective uid: 1000, real gid: 1000, effective gid: 1000, execfn: '/usr/bin/gdb', platform: 'x86_64'

# file core.gdb.1000.33d83b83743f48789cde7ca7640ea572.9471.1539461127000000 
core.gdb.1000.33d83b83743f48789cde7ca7640ea572.9471.1539461127000000: ELF 64-bit LSB core file, x86-64, version 1 (SYSV), SVR4-style, from 'gdb --batch -nx -iex set auto-load no -ex file /home/tkloczko/rpmbuild/BUILDROO', real uid: 1000, effective uid: 1000, real gid: 1000, effective gid: 1000, execfn: '/usr/bin/gdb', platform: 'x86_64'

[root@domek coredump]# gdb -c core.gdb.1000.33d83b83743f48789cde7ca7640ea572.9471.1539461127000000 
GNU gdb (GDB) Fedora 8.2.50.20181006-4.fc30
Copyright (C) 2018 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.
Type "show copying" and "show warranty" for details.
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[New LWP 9471]
[New LWP 9473]
[New LWP 9472]
[New LWP 9474]
Reading symbols from /usr/libexec/gdb...
Reading symbols from /usr/lib/debug/usr/libexec/gdb-8.2.50.20181006-4.fc30.x86_64.debug...

warning: Ignoring non-absolute filename: <linux-vdso.so.1>
Missing separate debuginfo for linux-vdso.so.1
Try: dnf --enablerepo='*debug*' install /usr/lib/debug/.build-id/12/945ae11e145cbdf017b8c26a423fc4f013cab7

warning: Loadable section ".note.gnu.property" outside of ELF segments
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib64/libthread_db.so.1".

warning: Loadable section ".note.gnu.property" outside of ELF segments

warning: Loadable section ".note.gnu.property" outside of ELF segments

warning: Loadable section ".note.gnu.property" outside of ELF segments

warning: Loadable section ".note.gnu.property" outside of ELF segments

warning: Loadable section ".note.gnu.property" outside of ELF segments

warning: Loadable section ".note.gnu.property" outside of ELF segments

warning: Loadable section ".note.gnu.property" outside of ELF segments

warning: Loadable section ".note.gnu.property" outside of ELF segments
Core was generated by `gdb --batch -nx -iex set auto-load no -ex file /home/tkloczko/rpmbuild/BUILDROO'.
Program terminated with signal SIGSEGV, Segmentation fault.
Segmentation fault (core dumped)