X-Git-Url: https://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?a=blobdiff_plain;f=dgit;h=1de40c1856cec8a1f67222903076b5993935eef2;hb=72e085dab49f5a890f92de475934bbca29839b4d;hp=a568c579a00041813506a2425617304431126481;hpb=67076f7426abe4204d133325bd632eb4bd8e2c68;p=dgit.git

diff --git a/dgit b/dgit
index a568c579..1de40c18 100755
--- a/dgit
+++ b/dgit
@@ -561,7 +561,6 @@ our %defcfg = ('dgit.default.distro' => 'debian',
 	       'dgit-distro.debian.git-check' => 'url',
 	       'dgit-distro.debian.git-check-suffix' => '/info/refs',
 	       'dgit-distro.debian.new-private-pushers' => 't',
-	       'dgit-distro.debian.dgit-tag-format' => 'new',
 	       'dgit-distro.debian/push.git-url' => '',
 	       'dgit-distro.debian/push.git-host' => 'push.dgit.debian.org',
 	       'dgit-distro.debian/push.git-user-force' => 'dgit',
@@ -2929,16 +2928,6 @@ sub plain_overwrite_pseudomerge ($$$) {
 
     my $i_arch_v = pseudomerge_version_check($clogp, $archive_hash);
 
-    my @tagformats = access_cfg_tagformats();
-    my @t_overwr =
-	map { $_->($i_arch_v->[0], access_basedistro) }
-	(grep { m/^(?:old|hist)$/ } @tagformats)
-	? \&debiantags : \&debiantag_new;
-    my $i_overwr = infopair_lrf_tag_lookup \@t_overwr, "previous version tag";
-    my $i_archive = [ $archive_hash, "current archive contents" ];
-
-    infopair_cond_equal($i_overwr, $i_archive);
-
     return $head if is_fast_fwd $archive_hash, $head;
 
     my $m = "Declare fast forward from $i_arch_v->[0]";
@@ -5223,6 +5212,30 @@ sub parseopts () {
     }
 }
 
+sub check_env_sanity () {
+    my $blocked = new POSIX::SigSet;
+    sigprocmask SIG_UNBLOCK, $blocked, $blocked or die $!;
+
+    eval {
+	foreach my $name (qw(PIPE CHLD)) {
+	    my $signame = "SIG$name";
+	    my $signum = eval "POSIX::$signame" // die;
+	    ($SIG{$name} // 'DEFAULT') eq 'DEFAULT' or
+		die "$signame is set to something other than SIG_DFL\n";
+	    $blocked->ismember($signum) and
+		die "$signame is blocked\n";
+	}
+    };
+    return unless $@;
+    chomp $@;
+    fail <<END;
+On entry to dgit, $@
+This is a bug produced by something in in your execution environment.
+Giving up.
+END
+}
+
+
 sub finalise_opts_opts () {
     foreach my $k (keys %opts_opt_map) {
 	my $om = $opts_opt_map{$k};
@@ -5258,6 +5271,7 @@ if ($ENV{$fakeeditorenv}) {
 }
 
 parseopts();
+check_env_sanity();
 git_slurp_config();
 
 print STDERR "DRY RUN ONLY\n" if $dryrun_level > 1;