This should always have reported what it saw and expected

1 files changed, 5 insertions, 1 deletions

diff --git a/src/asn1/ber_dec.cpp b/src/asn1/ber_dec.cpp
index faea4cb94..4d800d471 100644
--- a/src/asn1/ber_dec.cpp
+++ b/src/asn1/ber_dec.cpp
@@ -141,7 +141,11 @@ size_t find_eoc(DataSource* ber)
 void BER_Object::assert_is_a(ASN1_Tag type_tag, ASN1_Tag class_tag)
    {
    if(this->type_tag != type_tag || this->class_tag != class_tag)
-      throw BER_Decoding_Error("Tag mismatch when decoding");
+      throw BER_Decoding_Error("Tag mismatch when decoding got " +
+                               to_string(this->type_tag) + "/" +
+                               to_string(this->class_tag) + " expected " +
+                               to_string(type_tag) + "/" +
+                               to_string(class_tag));
    }
 
 /*