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/utils/dyn_load/dyn_load.cpp b/src/lib/utils/dyn_load/dyn_load.cpp
index 723d2502e..9b99331d1 100644
--- a/src/lib/utils/dyn_load/dyn_load.cpp
+++ b/src/lib/utils/dyn_load/dyn_load.cpp
@@ -22,7 +22,7 @@ namespace {
 void raise_runtime_loader_exception(const std::string& lib_name,
                                     const char* msg)
    {
-   throw std::runtime_error("Failed to load " + lib_name + ": " +
+   throw Exception("Failed to load " + lib_name + ": " +
                             (msg ? msg : "Unknown error"));
    }
 
@@ -70,7 +70,7 @@ void* Dynamically_Loaded_Library::resolve_symbol(const std::string& symbol)
 #endif
 
    if(!addr)
-      throw std::runtime_error("Failed to resolve symbol " + symbol +
+      throw Exception("Failed to resolve symbol " + symbol +
                                " in " + lib_name);
 
    return addr;