[PATCH] dpkg-buildpackage: print message on signal

From: Jochen Sprickerhof <[email protected]>

We found a unit test in the gcc package that killed dpkg-buildpackage
(#1089007). The error message was non obvious, so this adds a warning in
case someone stumbles of over this again.
---
 scripts/dpkg-buildpackage.pl | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/scripts/dpkg-buildpackage.pl b/scripts/dpkg-buildpackage.pl
index d849d6e90..4eadb5e7c 100755
--- a/scripts/dpkg-buildpackage.pl
+++ b/scripts/dpkg-buildpackage.pl
@@ -20,6 +20,7 @@
 # You should have received a copy of the GNU General Public License
 # along with this program.  If not, see <https://www.gnu.org/licenses/>.
 
+use sigtrap 'handler' => \&sig_handler, 'normal-signals';
 use strict;
 use warnings;
 
@@ -52,6 +53,12 @@ use Dpkg::Vendor qw(run_vendor_hook);
 
 textdomain('dpkg-dev');
 
+sub sig_handler {
+    my $sig_name = shift;
+    print g_("$0 was killed by signal $sig_name.\n");
+    print g_("This is probably a bug in the package.\n");
+}
+
 sub showversion {
     printf g_("Debian %s version %s.\n"), $Dpkg::PROGNAME, $Dpkg::PROGVERSION;