[Reproducible-commits] [strip-nondeterminism] 01/03: Include CRC when reading potential PNG blocks

[Chris Lamb]

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lamby pushed a commit to branch master
in repository strip-nondeterminism.

commit 4b180e366c219c822d0487dbdeef10e80eb4f9f5
Author: Chris Lamb <lamby at debian.org>
Date:   Tue Jul 19 18:14:00 2016 +0200

    Include CRC when reading potential PNG blocks
---
 lib/File/StripNondeterminism/handlers/png.pm | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/lib/File/StripNondeterminism/handlers/png.pm b/lib/File/StripNondeterminism/handlers/png.pm
index 8c15b2c..6dcf204 100644
--- a/lib/File/StripNondeterminism/handlers/png.pm
+++ b/lib/File/StripNondeterminism/handlers/png.pm
@@ -65,6 +65,8 @@ sub normalize {
 	while (read($fh, my $header, 8) == 8) {
 		my ($len, $type) = unpack('Na4', $header);
 
+		# Include the trailing CRC when reading
+		$len += 4;
 		# We cannot trust the value of $len, so we only read(2) if it
 		# has a sane size.
 		if ($len < 4096) {

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