2014-10-05 2:34 GMT+04:00 Niall Douglas :
On 4 Oct 2014 at 14:42, Mathias Gaunard wrote:
On 04/10/2014 13:24, Niall Douglas wrote:
Andrey, please list here three C++ compilers which had at least one
version release in the past five years which doesn't provide a magic
macro expanding out to the mangling of the enclosing function.
What about MinGW?
I just ran the following program on MinGW:
#include <iostream>
#include <typeinfo>
template<class T> void doprint(T a)
{
std::cout << __func__ << std::endl;
std::cout << __FUNCTION__ << std::endl;
std::cout << __PRETTY_FUNCTION__ << std::endl;
struct $$$ { };
std::cout << typeid($$$).name() << std::endl;
}
template<class T> struct doprint$$$___$$$ { };
int main(void)
{
doprint(1);
std::cout << typeid(doprint$$$___$$$<int>).name() << std::endl;
return 0;
}
It prints:
doprint
doprint
void doprint(T) [with T = int]
Z7doprintIiEvT_E3$$$
16doprint$$$___$$$IiE
I've enchanted the previous example and the results are not very good:
#include <typeinfo>
#include <iostream>
#include
namespace foo {
namespace adl_barrier {
BOOST_SYMBOL_EXPORT boost::variant
export_me_function(boost::variant, boost::variant) {
return 0;
}
BOOST_SYMBOL_EXPORT boost::variant export_me_variable;
} // namespace adl_barrier
using adl_barrier::export_me_function;
using adl_barrier::export_me_variable;
}
template & var>
struct printer {};
template (&var)(boost::variant,
boost::variant)>
struct printer2 {};
int main() {
std:: cout << typeid(printer2foo::export_me_function).name() <<
std::endl;
std:: cout << typeid(printerfoo::export_me_variable).name() <<
std::endl;
}
Code from above will output:
Linux:
8printer2ILZN3foo11adl_barrier18export_me_functionEN5boost7variantIisNS2_6detail7variant5void_ES6_S6_S6_S6_S6_S6_S6_S6_S6_S6_S6_S6_S6_S6_S6_S6_S6_EES7_EE
7printerILZN3foo11adl_barrier18export_me_variableEEE
Windows:
.?AU?$printer2@$1?export_me_function@adl_barrier@foo@
@YA?AV?$variant@HFUvoid_@0detail@boost@@U1023@U1023@U1023@U1023@U1023@U1023
@U1023@U1023@U1023@U1023@U10
23@U1023@U1023@U1023@U1023@U1023@U1023@@boost@@V45@0@Z@@
.?AU?$printer@$E?export_me_variable@adl_barrier@foo@@3V?$variant@HFUvoid_
@0detail@boost@@U1023@U1023@U1023@U1023@U1023@U1023@U1023@U1023@U1023@U1023
@U1023@U
1023@U1023@U1023@U1023@U1023@U1023@@boost@@A@@
While we still need the following:
Linux:
_ZN3foo11adl_barrier18export_me_functionEN5boost7variantIisNS1_6detail7variant5void_ES5_S5_S5_S5_S5_S5_S5_S5_S5_S5_S5_S5_S5_S5_S5_S5_S5_EES6_
_ZN3foo11adl_barrier18export_me_variableE
Windows:
?export_me_function@adl_barrier@foo@@YA?AV?$variant@HFUvoid_@0detail@boost
@@U1023@U1023@U1023@U1023@U1023@U1023@U1023@U1023@U1023@U1023@U1023@U1023
@U1023@U1
023@U1023@U1023@U1023@@boost@@V34@0@Z
?export_me_variable@adl_barrier@foo@@3V?$variant@HFUvoid_@0detail@boost
@@U1023@U1023@U1023@U1023@U1023@U1023@U1023@U1023@U1023@U1023@U1023@U1023
@U1023@U1023
@U1023@U1023@U1023@@boost@@A
Looks like such method is not very good, function definition has changed
(Linux:5 was transformed into 6, 1 was tranformed into 2; Windows: V34
changed into V45)... I'm afraid that there'll be more surprises
--
Best regards,
Antony Polukhin
