[PATCH] cvsserver: Determinize output to combat Perl 5.18 hash randomization
From: Anders Kaseorg <hidden>
Date: 2016-06-15 22:59:08
Subsystem:
the rest · Maintainer:
Linus Torvalds
Perl 5.18 randomizes the seed used by its hash function, so iterating through hashes results in different orders from run to run: http://perldoc.perl.org/perl5180delta.html#Hash-overhaul This usually broke t9400 (gitcvs.dbname, gitcvs.ext.dbname, when running cmp on two .sqlite files) and t9402 (check [cvswork3] diff, when running test_cmp on two diffs). To fix this, hide the internal order of hashes with sort when sending output or running database queries. (An alternative workaround is PERL_HASH_SEED=0, but this seems nicer.) Signed-off-by: Anders Kaseorg <redacted> --- git-cvsserver.perl | 10 +++++----- 1 file changed, 5 insertions(+), 5 deletions(-)
diff --git a/git-cvsserver.perl b/git-cvsserver.perl
index 67b1e7b..6177f4a 100755
--- a/git-cvsserver.perl
+++ b/git-cvsserver.perl@@ -430,10 +430,10 @@ sub req_validrequests $log->debug("req_validrequests"); - $log->debug("SEND : Valid-requests " . join(" ",keys %$methods)); + $log->debug("SEND : Valid-requests " . join(" ",sort keys %$methods)); $log->debug("SEND : ok"); - print "Valid-requests " . join(" ",keys %$methods) . "\n"; + print "Valid-requests " . join(" ",sort keys %$methods) . "\n"; print "ok\n"; }
@@ -2124,7 +2124,7 @@ sub req_diff print "M retrieving revision $meta2->{revision}\n" } print "M diff "; - foreach my $opt ( keys %{$state->{opt}} ) + foreach my $opt ( sort keys %{$state->{opt}} ) { if ( ref $state->{opt}{$opt} eq "ARRAY" ) {
@@ -4050,7 +4050,7 @@ sub update close FILELIST; # Detect deleted files - foreach my $file ( keys %$head ) + foreach my $file ( sort keys %$head ) { unless ( exists $seen_files->{$file} or $head->{$file}{filehash} eq "deleted" ) {
@@ -4078,7 +4078,7 @@ sub update } $self->delete_head(); - foreach my $file ( keys %$head ) + foreach my $file ( sort keys %$head ) { $self->insert_head( $file,
--
1.8.4.1