From 11efa9e140baac4074b99577711c0a310fe81dfb Mon Sep 17 00:00:00 2001 From: "Andrey M. Borodin" Date: Mon, 20 Feb 2023 10:28:02 -0800 Subject: [PATCH v5 1/2] Fix incorrect argument handling in psql \watch Incorrectly parsed argument was silently substituted with 1 second. This is changed to proper error message. Authour: Andrey Borodin Reviewed-by: Kyotaro Horiguchi Reviewed-by: Nathan Bossart Thread: https://postgr.es/m/CAAhFRxiZ2-n_L1ErMm9AZjgmUK%3DqS6VHb%2B0SaMn8sqqbhF7How%40mail.gmail.com --- src/bin/psql/command.c | 17 ++++++++++++++--- 1 file changed, 14 insertions(+), 3 deletions(-) diff --git a/src/bin/psql/command.c b/src/bin/psql/command.c index 955397ee9d..433db96a0e 100644 --- a/src/bin/psql/command.c +++ b/src/bin/psql/command.c @@ -2776,9 +2776,17 @@ exec_command_watch(PsqlScanState scan_state, bool active_branch, /* Convert optional sleep-length argument */ if (opt) { - sleep = strtod(opt, NULL); - if (sleep <= 0) - sleep = 1; + char *opt_end; + sleep = strtod(opt, &opt_end); + if (sleep < 0 || *opt_end) + { + pg_log_error("\\watch interval must be non-negative number, " + "but argument is '%s'", opt); + free(opt); + resetPQExpBuffer(query_buf); + psql_scan_reset(scan_state); + return PSQL_CMD_ERROR; + } free(opt); } @@ -5183,6 +5191,9 @@ do_watch(PQExpBuffer query_buf, double sleep) if (pagerpipe && ferror(pagerpipe)) break; + if (sleep == 0) + continue; + #ifdef WIN32 /* -- 2.32.0 (Apple Git-132)