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Don't pass NULL to fprintf, if not currently connected to a database.

Backpatch all the way to 8.3. Fixes bug #7811, per report and diagnosis by
Meng Qingzhong.
This commit is contained in:
Heikki Linnakangas
2013-01-15 18:54:03 +02:00
parent e2120d7568
commit 20df7e9053

View File

@ -161,6 +161,11 @@ void
slashUsage(unsigned short int pager)
{
FILE *output;
char *currdb;
currdb = PQdb(pset.db);
if (currdb == NULL)
currdb = _("none");
output = PageOutput(86, pager);
@ -244,7 +249,7 @@ slashUsage(unsigned short int pager)
fprintf(output, _("Connection\n"));
fprintf(output, _(" \\c[onnect] [DBNAME|- USER|- HOST|- PORT|-]\n"
" connect to new database (currently \"%s\")\n"),
PQdb(pset.db));
currdb);
fprintf(output, _(" \\encoding [ENCODING] show or set client encoding\n"));
fprintf(output, _(" \\password [USERNAME] securely change the password for a user\n"));
fprintf(output, "\n");