(gdb) bt #0 0x00002b9405ea1c38 in __lll_mutex_lock_wait () from /lib64/libc.so.6 #1 0x00002b9405e45e5f in _L_lock_4026 () from /lib64/libc.so.6 #2 0x00002b9405e42df1 in free () from /lib64/libc.so.6 #3 0x00002b9405e5b148 in tzset_internal () from /lib64/libc.so.6 #4 0x00002b9405e5b9d0 in tzset () from /lib64/libc.so.6 #5 0x000 02b9405e5fe44 in strftime_l () from /lib64/libc.so.6 #6 0x00002b9405e93701 in __vsyslog_chk () from /lib64/libc.so.6 #7 0x00002b9405e3c6d0 in __libc_message () from /lib64/libc.so.6 #8 0x00002b9405e4177e in malloc_printerr () from /lib64/libc.so.6 #9 0x00002b9405e42dfc in free () from /lib64/libc.so.6 #10 0x00000000004007c9 in main (argc=1, argv=0x7fffa524f4d8) at x.cpp:17 02b9405e5fe44 in strftime_l () from /lib64/libc.so.6 #6 0x00002b9405e93701 in __vsyslog_chk () from /lib64/libc.so.6 #7 0x00002b9405e3c6d0 in __libc_message () from /lib64/libc.so.6 #8 0x00002b9405e4177e in malloc_printerr () from /lib64/libc.so.6 #9 0x00002b9405e42dfc in free () from /lib64/libc.so.6 #10 0x00000000004007c9 in main (argc=1, argv=0x7fffa524f4d8) at x.cpp:17