Re: Server crash with certain encodings

Thom Brown <thom(at)linux(dot)com> writes:
> I can crash the server in 9.4, 9.5 and 9.6 when doing the following on
> Linux:

Hm, would you confirm that you get a stack trace like this:

#0 0x000000397ee32625 in raise () from /lib64/libc.so.6
#1 0x000000397ee33e05 in abort () from /lib64/libc.so.6
#2 0x000000397ee70537 in __libc_message () from /lib64/libc.so.6
#3 0x000000397ee75f4e in malloc_printerr () from /lib64/libc.so.6
#4 0x000000397ee78cad in _int_free () from /lib64/libc.so.6
#5 0x000000000076ce70 in free_struct_lconv () at pg_locale.c:394
#6 PGLC_localeconv () at pg_locale.c:460
#7 0x0000000000717cd5 in cash_in (fcinfo=<value optimized out>) at cash.c:112

Looks like we're getting confused about allocation/freeing of lconv
data --- I've not dug into it more closely than to reproduce the crash.

Aside from that, though, it's not really clear to me that it's sensible to
allow an lc_monetary (or lc_anything) setting that specifies an encoding
different from the database encoding. Should your example have failed at
the SET lc_monetary step? If not, what would you expect that to mean?

regards, tom lane