Re: [Boost-users] fatal error C1001 with visual studio 8, boost 1.34, BOOST_AUTO() macro

17 May 2007

      ...
----- Original Message ----
From: Arkadiy Vertleyb 
To: boost-users@lists.boost.org
Sent: Thursday, May 17, 2007 9:31:51 PM
Subject: Re: [Boost-users] fatal error C1001 with visual studio 8, boost 1.34, BOOST_AUTO() macro
"Trigve Siver"  wrote
...
class A
{
public:
   pqxx::result test(int a)
   {
       return pqxx::result();
   }
};
int main(int argc, char* argv[])
{
   BOOST_AUTO(rs, a.test(1)); // OK
}
One more experiment -- can you change the function signature to accept char* 
(or maybe some other string type to exactly match the signature of exec()), 
and use it passing "SELECT 1" to it?
No problem:

---
class A
{
public:
    pqxx::result test(const std::string &rString, const std::string &rDesc = std::string()) // fatal error
//  pqxx::result test(const std::string &rString) // OK
    {
        return pqxx::result();
    }

    pqxx::result test1(void)
    {
        return pqxx::result();
    }

};
int main(int argc, char* argv[])
{
    A a;
    BOOST_AUTO(rs, a.test("SELECT 1")); // fatal error (when used A::test(const std::string &rString, const std::string &rDesc = std::string()))
...
}
---

So when I use the first signature (pqxx::result test(const std::string &rString, const std::string &rDesc = std::string()) there is fatal error. Otherwise everything compile OK.
...
Also, can you call:
cout << typeid(T.exec("SELECT 1")).name() << endl;
and see if it's compiled and what gets output?
std::cout << typeid(T.exec("SELECT 1")).name() << std::endl;

Output:
class pqxx::result
...
Regards,
Arkadiy
Thanks

Trigve

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