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, 2 insertions, 2 deletions

diff --git a/src/lib/modes/cbc/cbc.cpp b/src/lib/modes/cbc/cbc.cpp
index 1e3c6d6e3..fedeaf20d 100644
--- a/src/lib/modes/cbc/cbc.cpp
+++ b/src/lib/modes/cbc/cbc.cpp
@@ -17,7 +17,7 @@ CBC_Mode::CBC_Mode(BlockCipher* cipher, BlockCipherModePaddingMethod* padding) :
    m_state(m_cipher->block_size())
    {
    if(m_padding && !m_padding->valid_blocksize(cipher->block_size()))
-      throw std::invalid_argument("Padding " + m_padding->name() +
+      throw Invalid_Argument("Padding " + m_padding->name() +
                                   " cannot be used with " +
                                   cipher->name() + "/CBC");
    }
@@ -127,7 +127,7 @@ void CBC_Encryption::finish(secure_vector<byte>& buffer, size_t offset)
    padding().add_padding(buffer, bytes_in_final_block, BS);
 
    if((buffer.size()-offset) % BS)
-      throw std::runtime_error("Did not pad to full block size in " + name());
+      throw Exception("Did not pad to full block size in " + name());
 
    update(buffer, offset);
    }