Hi, Just noticed this on Fedora 28 box (GCC 8.1.1)
===================================================================== pgbench.c: In function 'ParseScript': pgbench.c:2640:20: warning: '__builtin___sprintf_chk' may write a terminating nul past the end of the destination [-Wformat-overflow=] sprintf(var, "$%d", cmd->argc); ^ In file included from /usr/include/stdio.h:862, from ../../../src/include/c.h:81, from ../../../src/include/postgres_fe.h:25, from pgbench.c:34: /usr/include/bits/stdio2.h:33:10: note: '__builtin___sprintf_chk' output between 3 and 13 bytes into a destination of size 12 return __builtin___sprintf_chk (__s, __USE_FORTIFY_LEVEL - 1, ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ __bos (__s), __fmt, __va_arg_pack ()); ===================================================================== Regards, -- Devrim Gündüz EnterpriseDB: https://www.enterprisedb.com PostgreSQL Consultant, Red Hat Certified Engineer Twitter: @DevrimGunduz , @DevrimGunduzTR
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