Reroot the exception hierarchy into a toplevel Exception class

As the alternatives are unfortunate for applications trying to catch
all library errors, and it seems deriving from std::runtime_error
causes problems with MSVC DLLs (GH #340)

Effectively reverts 2837e915d82e43

1 files changed, 1 insertions, 1 deletions

diff --git a/src/lib/pubkey/pk_ops.cpp b/src/lib/pubkey/pk_ops.cpp
index 9f264af12..bc421eb90 100644
--- a/src/lib/pubkey/pk_ops.cpp
+++ b/src/lib/pubkey/pk_ops.cpp
@@ -35,7 +35,7 @@ secure_vector<byte> PK_Ops::Encryption_with_EME::encrypt(const byte msg[], size_
    const std::vector<byte> encoded = unlock(m_eme->encode(msg, msg_len, max_raw, rng));
 
    if(8*(encoded.size() - 1) + high_bit(encoded[0]) > max_raw)
-      throw std::runtime_error("Input is too large to encrypt with this key");
+      throw Exception("Input is too large to encrypt with this key");
 
    return raw_encrypt(encoded.data(), encoded.size(), rng);
    }