Will C++ exceptions safely propagate through C code?

Question

I have a C++ application that calls SQLite\'s (SQLite is in C) sqlite3_exec() which in turn can call my callback function implemented in C++. SQLite is compiled into a stati

Answer 1

That was a really interesting question and I tested it out myself out of curiosity. On my OS X w/ gcc 4.2.1 the answer was YES. It works perfectly. I think a real test would be using gcc for the C++ and some other (MSVC?, LLVM?) for the C part and see if it still works.

My code:

callb.h:

#ifdef __cplusplus
extern "C" {
#endif

typedef void (*t_callb)();
void cfun(t_callb fn);

#ifdef __cplusplus
}
#endif

callb.c:

#include "callb.h"

void cfun(t_callb fn) {
 fn();
}

main.cpp:

#include 
#include 
#include "callb.h"

void myfn() {
  std::string s( "My Callb Except" );
  throw s;
}

int main() {
  try {
    cfun(myfn); 
  }
  catch(std::string s) {
    std::cout << "Caught: " << s << std::endl;
  }
  return 0;
}