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-rw-r--r--lib/PublicInbox/Git.pm13
-rw-r--r--t/git.t2
2 files changed, 9 insertions, 6 deletions
diff --git a/lib/PublicInbox/Git.pm b/lib/PublicInbox/Git.pm
index 1c148086..b3ae2b81 100644
--- a/lib/PublicInbox/Git.pm
+++ b/lib/PublicInbox/Git.pm
@@ -20,7 +20,7 @@ use Errno qw(EINTR);
 our $PIPE_BUFSIZ = 65536; # Linux default
 
 use constant MAX_INFLIGHT =>
-        (($^O eq 'linux' ? 4096 : POSIX::_POSIX_PIPE_BUF()) * 2)
+        (($^O eq 'linux' ? 4096 : POSIX::_POSIX_PIPE_BUF()) * 3)
         /
         65; # SHA-256 hex size + "\n" in preparation for git using non-SHA1
 
@@ -157,8 +157,8 @@ sub my_readline ($$) {
 
 sub cat_async_step ($$) {
         my ($self, $inflight) = @_;
-        die 'BUG: inflight empty or odd' if scalar(@$inflight) < 2;
-        my ($cb, $arg) = splice(@$inflight, 0, 2);
+        die 'BUG: inflight empty or odd' if scalar(@$inflight) < 3;
+        my ($req, $cb, $arg) = splice(@$inflight, 0, 3);
         my $rbuf = delete($self->{cat_rbuf}) // \(my $new = '');
         my ($bref, $oid, $type, $size);
         my $head = my_readline($self->{in}, $rbuf);
@@ -167,7 +167,10 @@ sub cat_async_step ($$) {
                 $bref = my_read($self->{in}, $rbuf, $size + 1) or
                         fail($self, defined($bref) ? 'read EOF' : "read: $!");
                 chop($$bref) eq "\n" or fail($self, 'LF missing after blob');
-        } elsif ($head !~ / missing$/) {
+        } elsif ($head =~ / missing$/) {
+                $type = 'missing';
+                $oid = $req;
+        } else {
                 fail($self, "Unexpected result from async git cat-file: $head");
         }
         eval { $cb->($bref, $oid, $type, $size, $arg) };
@@ -344,7 +347,7 @@ sub cat_async ($$$;$) {
         }
 
         print { $self->{out} } $oid, "\n" or fail($self, "write error: $!");
-        push(@$inflight, $cb, $arg);
+        push(@$inflight, $oid, $cb, $arg);
 }
 
 sub extract_cmt_time {
diff --git a/t/git.t b/t/git.t
index 0b2089ba..98d16f28 100644
--- a/t/git.t
+++ b/t/git.t
@@ -53,7 +53,7 @@ use_ok 'PublicInbox::Git';
         is_deeply([$oid_hex, $type, $size], \@x, 'got expected header');
         is($arg_res, $arg, 'arg passed to cat_async');
         is_deeply($raw, $bref, 'blob result matches');
-        is_deeply($missing, [ undef, undef, undef, undef, $arg],
+        is_deeply($missing, [ undef, 'non-existent', 'missing', undef, $arg],
                 'non-existent blob gives expected result');
 }