BUG #18364: psql execution error: Segmentation fault
The following bug has been logged on the website:
Bug reference: 18364
Logged by: George Gustavo Mirocha
Email address: gmirocha@gmail.com
PostgreSQL version: 16.2
Operating system: RHEL 8 & CENTOS 7
Description:
After upgrade Postgresql from 16.1 to 16.2 in both CENTOS 7 and RHEL 8 I'm
getting the segmentation fault error when I try to execute any "\" command
on psql. I have got this error in different hosts, plataforms, etc.
-bash-4.2$ psql
psql (16.2)
Type "help" for help.
postgres=# \l
Segmentation fault
------------- Execution with DEBUG:
postgres=# \l
Program received signal SIGSEGV, Segmentation fault.
slash_yylex (yylval_param=yylval_param@entry=0x0, yyscanner=0x6e2300) at
psqlscanslash.c:1312
1312 *yy_cp = yyg->yy_hold_char;
(gdb)
PG Bug reporting form <noreply@postgresql.org> writes:
After upgrade Postgresql from 16.1 to 16.2 in both CENTOS 7 and RHEL 8 I'm
getting the segmentation fault error when I try to execute any "\" command
on psql. I have got this error in different hosts, plataforms, etc.
Given the location of the error, it seems like you might have a
problem with inconsistent ABI for "flex". I'm not quite sure
how you'd get there, because that's usually pretty self-contained.
(Once there was a "libfl.a" that could possibly cause this sort of
problem, but I don't think that exists in modern flex versions.)
Anyway, I'd check that you have a consistent installation of flex
and then rebuild Postgres from source.
regards, tom lane