From 752f43d4e4fc6348db63d17b1984116493cc5b2f Mon Sep 17 00:00:00 2001
From: Jay Berkenbilt <ejb@ql.org>
Date: Sat, 21 May 2022 17:36:32 -0400
Subject: Allow empty b: binary JSON strings

---
 libqpdf/QPDF_json.cc | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

(limited to 'libqpdf/QPDF_json.cc')

diff --git a/libqpdf/QPDF_json.cc b/libqpdf/QPDF_json.cc
index c6fab8ad..c2ebac06 100644
--- a/libqpdf/QPDF_json.cc
+++ b/libqpdf/QPDF_json.cc
@@ -128,7 +128,7 @@ is_binary_string(std::string const& v, std::string& str)
             }
             ++count;
         }
-        return ((count > 0) && (count % 2 == 0));
+        return (count % 2 == 0);
     }
     return false;
 }
@@ -180,10 +180,10 @@ QPDF::test_json_validators()
     check(str == "");
     check(!is_binary_string("", str));
     check(!is_binary_string("x:", str));
-    check(!is_binary_string("b:", str));
     check(!is_binary_string("b:1", str));
     check(!is_binary_string("b:123", str));
     check(!is_binary_string("b:gh", str));
+    check(is_binary_string("b:", str));
     check(is_binary_string("b:12", str));
     check(is_binary_string("b:123aBC", str));
     check(!is_name(""));
-- 
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