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

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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 0af83bd530
commit 63b0b397c7
1 changed files with 6 additions and 1 deletions
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7
src/bin/psql/help.c
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@@ -159,6 +159,11 @@ void
slashUsage(unsigned short int pager)
{
FILE *output;
char *currdb;
currdb = PQdb(pset.db);
if (currdb == NULL)
currdb = _("none");
output = PageOutput(69, pager);
@@ -171,7 +176,7 @@ slashUsage(unsigned short int pager)
fprintf(output, _("General\n"));
fprintf(output, _(" \\c[onnect] [DBNAME|- USER|- HOST|- PORT|-]\n"
" connect to new database (currently \"%s\")\n"),
PQdb(pset.db));
currdb);
fprintf(output, _(" \\cd [DIR] change the current working directory\n"));
fprintf(output, _(" \\copyright show PostgreSQL usage and distribution terms\n"));
fprintf(output, _(" \\encoding [ENCODING]\n"