perf-memory test segfault

[yarda]

On Fedora Rawhide (f35):

19/29 Test #19: perf-memory ......................***Exception: SegFault  0.19 sec

./perf-memory
  PID.Thread  | Filename:line                    |   ms | Message
   35.1        ox-1.17.0/lunchbox/thread.cpp:155       0 Thread #1 type (anonymous namespace)::Watchdog successfully initialized
   35.Main     hbox-1.17.0/lunchbox/init.cpp:70        0 Log level DEBUG topics 4 date Wed Jun 16 00:40:29 2021
Segmentation fault (core dumped)

[yarda]

Running through valgrind:

==26== Memcheck, a memory error detector
==26== Copyright (C) 2002-2017, and GNU GPL'd, by Julian Seward et al.
==26== Using Valgrind-3.17.0 and LibVEX; rerun with -h for copyright info
==26== Command: ./perf-memory
==26== 
  PID.Thread  | Filename:line                    |   ms | Message
   26.1        ox-1.17.0/lunchbox/thread.cpp:155     103 Thread #1 type (anonymous namespace)::Watchdog successfully initialized
   26.Main     hbox-1.17.0/lunchbox/init.cpp:70      263 Log level DEBUG topics 4 date Wed Jun 16 00:47:20 2021
==26== Invalid write of size 8
==26==    at 0x484806D: memset (vg_replace_strmem.c:1270)
==26==    by 0x10C323: UnknownInlinedFun (string_fortified.h:59)
==26==    by 0x10C323: TaskThread::run() (memory.cpp:74)
==26==    by 0x10CF90: testMain(int, char**) (memory.cpp:93)
==26==    by 0x10BB0C: main (test.h:120)
==26==  Address 0x0 is not stack'd, malloc'd or (recently) free'd
==26== 
==26== 
==26== Process terminating with default action of signal 11 (SIGSEGV)
==26==  Access not within mapped region at address 0x0
==26==    at 0x484806D: memset (vg_replace_strmem.c:1270)
==26==    by 0x10C323: UnknownInlinedFun (string_fortified.h:59)
==26==    by 0x10C323: TaskThread::run() (memory.cpp:74)
==26==    by 0x10CF90: testMain(int, char**) (memory.cpp:93)
==26==    by 0x10BB0C: main (test.h:120)
==26==  If you believe this happened as a result of a stack
==26==  overflow in your program's main thread (unlikely but
==26==  possible), you can try to increase the size of the
==26==  main thread stack using the --main-stacksize= flag.
==26==  The main thread stack size used in this run was 8388608.
==26== 
==26== HEAP SUMMARY:
==26==     in use at exit: 7,514 bytes in 37 blocks
==26==   total heap usage: 62 allocs, 25 frees, 88,812 bytes allocated
==26== 
==26== LEAK SUMMARY:
==26==    definitely lost: 0 bytes in 0 blocks
==26==    indirectly lost: 0 bytes in 0 blocks
==26==      possibly lost: 320 bytes in 1 blocks
==26==    still reachable: 7,194 bytes in 36 blocks
==26==         suppressed: 0 bytes in 0 blocks
==26== Rerun with --leak-check=full to see details of leaked memory
==26== 
==26== For lists of detected and suppressed errors, rerun with: -s
==26== ERROR SUMMARY: 1 errors from 1 contexts (suppressed: 0 from 0)
Segmentation fault (core dumped)

[yarda]

Run through gdb:

Thread 1 "perf-memory" received signal SIGSEGV, Segmentation fault.
0x00007ffff7993db1 in __memset_avx2_erms () from /lib64/libc.so.6
(gdb) bt
#0  0x00007ffff7993db1 in __memset_avx2_erms () from /lib64/libc.so.6
#1  0x0000555555558324 in memset (__len=<optimized out>, __ch=42, __dest=0x0) at /usr/include/bits/string_fortified.h:59
#2  TaskThread::run (this=0x7fffffffd360) at /builddir/build/BUILD/Lunchbox-1.17.0/tests/perf/memory.cpp:74
#3  0x0000555555558f91 in testMain (argc=1, argv=0x7fffffffdae8) at /builddir/build/BUILD/Lunchbox-1.17.0/tests/perf/memory.cpp:93
#4  0x0000555555557b0d in main (argc=1, argv=0x7fffffffdae8) at /builddir/build/BUILD/Lunchbox-1.17.0/lunchbox/test.h:120