fix handling of GPS weeks after 2180 (#1989379)

gpsd-week2180.patch

@@ -0,0 +1,44 @@
+Hunk cherry-picked from the following commit. It doesn't add the command to set
+the date in tests, i.e. they are broken now.
+
+commit 7f30d88d04dc62b8bd6265ad1d09d72d220f97f6
+Author: Gary E. Miller <gem@rellim.com>
+Date:   Sat Jul 24 20:22:15 2021 -0700
+
+    gpsd/timebase.c" Don't compute wrong GPS rollover after 2020-10-23.
+    
+    gpsfake uses "# Date: yyyy-mm-dd" to set initial time.
+    
+    Some regressions needed proper dates.
+    Some regressions now compute proper dates.
+
+diff --git a/gpsd/timebase.c b/gpsd/timebase.c
+index 31ac5fab4..513499021 100644
+--- a/gpsd/timebase.c
++++ b/gpsd/timebase.c
+@@ -388,19 +402,12 @@ timespec_t gpsd_gpstime_resolv(struct gps_device_t *session,
+     if (week < 1024)
+         week += session->context->rollovers * 1024;
+ 
+-    /* sanity check week number, GPS epoch, against leap seconds
+-     * Does not work well with regressions because the leap_sconds
+-     * could be from the receiver, or from BUILD_LEAPSECONDS. */
+-    if (0 < session->context->leap_seconds &&
+-        19 > session->context->leap_seconds &&
+-        2180 < week) {
+-        /* assume leap second = 19 by 31 Dec 2022
+-         * so week > 2180 is way in the future, do not allow it */
+-        week -= 1024;
+-        GPSD_LOG(LOG_WARN, &session->context->errout,
+-                 "GPS week confusion. Adjusted week %u for leap %d\n",
+-                 week, session->context->leap_seconds);
+-    }
++    /* This used to sanity check week number, GPS epoch, against leap
++     * seconds.  Did not work well with regressions because the leap_sconds
++     * could be from the receiver, or from BUILD_LEAPSECONDS.
++     * Maybe if the regressions files provided BUILD_LEAPSECONDS this
++     * could be tried again.
++     */
+ 
+     // gcc needs the (time_t)week to not overflow. clang got it right.
+     // if time_t is 32-bits, then still 2038 issues

gpsd.spec

@@ -13,6 +13,9 @@ URL:            http://catb.org/gpsd/
 Source0:        https://download-mirror.savannah.gnu.org/releases/gpsd/%{name}-%{version}.tar.gz
 Source11:       gpsd.sysconfig
 
+# Fix handling of GPS weeks after 2180
+Patch1:         gpsd-week2180.patch
+
 BuildRequires:  dbus-devel            
 BuildRequires:  dbus-glib-devel            
 BuildRequires:  ncurses-devel            
@@ -104,6 +107,7 @@ This package contains various clients using gpsd.
 
 %prep
 %setup -q
+%patch1 -p1 -b .week2180
 
 # don't try reloading systemd when installing in the build root
 sed -i 's|systemctl daemon-reload|true|' SConscript