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/passhash/passhash9/passhash9.cpp b/src/lib/passhash/passhash9/passhash9.cpp
index b457fc5c7..c6a2f7d9e 100644
--- a/src/lib/passhash/passhash9/passhash9.cpp
+++ b/src/lib/passhash/passhash9/passhash9.cpp
@@ -104,7 +104,7 @@ bool check_passhash9(const std::string& pass, const std::string& hash)
       return false;
 
    if(work_factor > 512)
-      throw std::invalid_argument("Requested Bcrypt work factor " +
+      throw Invalid_Argument("Requested Bcrypt work factor " +
                                   std::to_string(work_factor) + " too large");
 
    const size_t kdf_iterations = WORK_FACTOR_SCALE * work_factor;