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/hash/comb4p/comb4p.cpp b/src/lib/hash/comb4p/comb4p.cpp
index 4222eaf54..791d6d950 100644
--- a/src/lib/hash/comb4p/comb4p.cpp
+++ b/src/lib/hash/comb4p/comb4p.cpp
@@ -50,10 +50,10 @@ Comb4P::Comb4P(HashFunction* h1, HashFunction* h2) :
    m_hash1(h1), m_hash2(h2)
    {
    if(m_hash1->name() == m_hash2->name())
-      throw std::invalid_argument("Comb4P: Must use two distinct hashes");
+      throw Invalid_Argument("Comb4P: Must use two distinct hashes");
 
    if(m_hash1->output_length() != m_hash2->output_length())
-      throw std::invalid_argument("Comb4P: Incompatible hashes " +
+      throw Invalid_Argument("Comb4P: Incompatible hashes " +
                                   m_hash1->name() + " and " +
                                   m_hash2->name());