[Bug c/93764] New: lzo 2.10 test suite fails with -O2 and -O3

[kloczko.tomasz at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=93764

            Bug ID: 93764
           Summary: lzo 2.10 test suite fails with -O2 and -O3
           Product: gcc
           Version: unknown
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c
          Assignee: unassigned at gcc dot gnu.org
          Reporter: kloczko.tomasz at gmail dot com
  Target Milestone: ---

Gcc 9.2 was OK.
With gcc 10.0.1 from rawhide test suite fails like below

+ /usr/bin/make -O -j48 V=1 VERBOSE=1 check test
/usr/bin/make  check-local
/usr/bin/make  all-am
make[1]: Entering directory '/home/tkloczko/rpmbuild/BUILD/lzo-2.10'
./lzotest/lzotest -mlzo -n2 -q './COPYING'

LZO real-time data compression library (v2.10, Mar 01 2017).
Copyright (C) 1996-2017 Markus Franz Xaver Johannes Oberhumer
All Rights Reserved.

internal error - lzo_init() failed !!!
(this usually indicates a compiler bug - try recompiling
without optimizations, and enable `-DLZO_DEBUG' for diagnostics)
make[1]: *** [Makefile:1701: check-local] Error 1
make[1]: Leaving directory '/home/tkloczko/rpmbuild/BUILD/lzo-2.10'
make: *** [Makefile:1373: check-am] Error 2
make: *** Waiting for unfinished jobs....
./lzotest/lzotest -mavail -n10 -q './COPYING'

LZO real-time data compression library (v2.10, Mar 01 2017).
Copyright (C) 1996-2017 Markus Franz Xaver Johannes Oberhumer
All Rights Reserved.

internal error - lzo_init() failed !!!
(this usually indicates a compiler bug - try recompiling
without optimizations, and enable `-DLZO_DEBUG' for diagnostics)