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-rw-r--r--src/bin/psql/command.c2
-rw-r--r--src/interfaces/libpq/fe-secure-openssl.c2
2 files changed, 2 insertions, 2 deletions
diff --git a/src/bin/psql/command.c b/src/bin/psql/command.c
index 288c1a8c935..fae5940b54e 100644
--- a/src/bin/psql/command.c
+++ b/src/bin/psql/command.c
@@ -3896,7 +3896,7 @@ printSSLInfo(void)
protocol ? protocol : _("unknown"),
cipher ? cipher : _("unknown"),
(compression && strcmp(compression, "off") != 0) ? _("on") : _("off"),
- alpn ? alpn : _("none"));
+ (alpn && alpn[0] != '\0') ? alpn : _("none"));
}
/*
diff --git a/src/interfaces/libpq/fe-secure-openssl.c b/src/interfaces/libpq/fe-secure-openssl.c
index e7a4d006e19..33362000d3c 100644
--- a/src/interfaces/libpq/fe-secure-openssl.c
+++ b/src/interfaces/libpq/fe-secure-openssl.c
@@ -1837,7 +1837,7 @@ PQsslAttribute(PGconn *conn, const char *attribute_name)
SSL_get0_alpn_selected(conn->ssl, &data, &len);
if (data == NULL || len == 0 || len > sizeof(alpn_str) - 1)
- return NULL;
+ return "";
memcpy(alpn_str, data, len);
alpn_str[len] = 0;
return alpn_str;