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pg_restore: Remove unnecessary strlen() calls in options parsing.

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Unlike pg_dump and pg_dumpall, pg_restore first checks whether the
argument passed to --format, --host, and --port is empty before
setting the corresponding variable.  Consequently, pg_restore does
not error if given an empty format name, whereas pg_dump and
pg_dumpall do.  Empty arguments for --host and --port are ignored
by all three applications, so this commit produces no functionality
changes there.  This behavior should perhaps be reconsidered, but
that is left as a future exercise.  As with other recent changes to
option handling for these applications (commits b2898baaf7,
7c8280eeb5, and be0d0b457c), no back-patch.

Author: Mahendra Singh Thalor <mahi6run@gmail.com>
Reviewed-by: Srinath Reddy Sadipiralla <srinath2133@gmail.com>
Discussion: https://postgr.es/m/CAKYtNApkh%3DVy2DpNRCnEJmPpxNuksbAh_QBav%3D2fLmVjBhGwFw%40mail.gmail.com
This commit is contained in:
Nathan Bossart
2026-03-18 14:22:15 -05:00
parent 1c5bf1185a
commit ec80215c03
2 changed files with 9 additions and 7 deletions
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src/bin/pg_dump/pg_restore.c
+3 -6
View File
@@ -225,16 +225,14 @@ main(int argc, char **argv)
opts->filename = pg_strdup(optarg);
break;
case 'F':
if (strlen(optarg) != 0)
opts->formatName = pg_strdup(optarg);
opts->formatName = pg_strdup(optarg);
break;
case 'g':
/* restore only global sql commands. */
globals_only = true;
break;
case 'h':
if (strlen(optarg) != 0)
opts->cparams.pghost = pg_strdup(optarg);
opts->cparams.pghost = pg_strdup(optarg);
break;
case 'j': /* number of restore jobs */
if (!option_parse_int(optarg, "-j/--jobs", 1,
@@ -264,8 +262,7 @@ main(int argc, char **argv)
break;
case 'p':
if (strlen(optarg) != 0)
opts->cparams.pgport = pg_strdup(optarg);
opts->cparams.pgport = pg_strdup(optarg);
break;
case 'R':
/* no-op, still accepted for backwards compatibility */
src/bin/pg_dump/t/001_basic.pl
+6 -1
View File
@@ -204,7 +204,12 @@ command_fails_like(
command_fails_like(
[ 'pg_restore', '-f -', '-F', 'garbage' ],
qr/\Qpg_restore: error: unrecognized archive format "garbage";\E/,
'pg_dump: unrecognized archive format');
'pg_restore: unrecognized archive format');
command_fails_like(
[ 'pg_restore', '-f -', '-F', '' ],
qr/\Qpg_restore: error: unrecognized archive format "";\E/,
'pg_restore: empty archive format');
command_fails_like(
[ 'pg_dump', '--on-conflict-do-nothing' ],