------- Comment #48 from sebor at roguewave dot com 2008-06-03 00:07 ------- FWIW, let me throw out a suggestion for an implementation of Benjamin's (2) in the C++ front end:
1. "try" is a no-op 2. "catch" blocks are syntax-checked but eliminated as dead code 3. "throw" checks to see if a user-defined handler is installed and if so, calls it with useful arguments (e.g., the what() string); if no handler is installed or if it returns, std::terminate() is called 4. function exception specification is diagnosed as a warning but otherwise ignored (libc, libsupc++, and libstdc++ header should compile cleanly) libsupc++ provides a __set_xxx() function to let users install the handler. AFAIK, IBM XLC++ implements 1, 2, and 4 when -qnoeh is used. Apache stdcxx implements 3 for exceptions thrown by the library. -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=25191
