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/tests/main.cpp b/src/tests/main.cpp
index 41d29d542..b8d85cb62 100644
--- a/src/tests/main.cpp
+++ b/src/tests/main.cpp
@@ -170,7 +170,7 @@ setup_tests(std::ostream& out, size_t threads, size_t soak_level, bool log_succe
 #else
 
    if(drbg_seed != "")
-      throw std::runtime_error("HMAC_DRBG disabled in build, cannot specify DRBG seed");
+      throw Test_Error("HMAC_DRBG disabled in build, cannot specify DRBG seed");
 
 #if defined(BOTAN_HAS_SYSTEM_RNG)
    out << " rng:system";