UniversalTime: better check for size on parse.

rubyzip · Dec 15, 2019 · a5e785c · a5e785c
1 parent 65cfd8a
commit a5e785c
Showing 1 changed file with 3 additions and 1 deletion.
diff --git a/lib/zip/extra_field/universal_time.rb b/lib/zip/extra_field/universal_time.rb
@@ -35,8 +35,10 @@ def mtime=(time)
 
     def merge(binstr)
       return if binstr.empty?
+
       size, content = initial_parse(binstr)
-      size || return
+      return if !size || size <= 0
+
       @flag, mt, at, ct = content.unpack('Cl<l<l<')
       mt && @mtime ||= ::Zip::DOSTime.at(mt)
       at && @atime ||= ::Zip::DOSTime.at(at)