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-rw-r--r--lib/webrick/httpservlet/cgihandler.rb4
1 files changed, 2 insertions, 2 deletions
diff --git a/lib/webrick/httpservlet/cgihandler.rb b/lib/webrick/httpservlet/cgihandler.rb
index 7ba2d50860..1976ae6948 100644
--- a/lib/webrick/httpservlet/cgihandler.rb
+++ b/lib/webrick/httpservlet/cgihandler.rb
@@ -32,9 +32,9 @@ module WEBrick
status = -1
cgi_in = IO::popen(@cgicmd, "wb")
- cgi_out = Tempfile.new("webrick.cgiout.", @tempdir)
+ cgi_out = Tempfile.new("webrick.cgiout.", @tempdir, mode: IO::BINARY)
cgi_out.set_encoding("ASCII-8BIT")
- cgi_err = Tempfile.new("webrick.cgierr.", @tempdir)
+ cgi_err = Tempfile.new("webrick.cgierr.", @tempdir, mode: IO::BINARY)
cgi_err.set_encoding("ASCII-8BIT")
begin
cgi_in.sync = true