[Bug c++/69205] Place a variadic template in front of function parameter when it is known

[pinskia at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=69205

Andrew Pinski  changed:

   What|Removed |Added

 Resolution|--- |DUPLICATE
 Status|UNCONFIRMED |RESOLVED

--- Comment #5 from Andrew Pinski  ---
Note I think I might have reduced it too far.
Here is one which at least removes std::string usage:
#include 
struct string1{};
using namespace std;
template
void print_action(function action_factory)
{}
int main(int argc, char *argv[])
{
  print_action(function());
  return 0;
}
-- CUT -
This works on ICC, clang and MSVC.
Still fails on the trunk.

And this is a dup of bug 56190.

*** This bug has been marked as a duplicate of bug 56190 ***

[Bug c++/69205] Place a variadic template in front of function parameter when it is known

[mohsen.tamiz at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=69205

--- Comment #4 from mohsen  ---
This bug tagged rejects-valid, although, Andrew Pinski has told that he did not
know variadic templates well. After that I do not know I must wait still to get
a certain answer about that or it really accepted and it will be fixed in the
future versions. This bug is a part of my code so I must be sure that whether
it is true or not. I were waiting for more comments about that but it seems an
unactive bug.

[Bug c++/69205] Place a variadic template in front of function parameter when it is known

[pinskia at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=69205

Andrew Pinski  changed:

   What|Removed |Added

   Keywords||rejects-valid
  Known to fail||6.0

--- Comment #2 from Andrew Pinski  ---
Here is a short testcase without any use of includes:
struct string{};
template class function;
template class
function<_Res(_ArgTypes...)>{};

template
void print_action(function action_factory)
{}

int main(int argc, char *argv[])
{
  function t;
  print_action(t);
  print_action(t);

  return 0;
}

--- CUT ---
I don't know variadic templates that well to know enough so I can't comment one
way or another.

[Bug c++/69205] Place a variadic template in front of function parameter when it is known

[pinskia at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=69205

--- Comment #3 from Andrew Pinski  ---
Note the trunk has a different error message:
t.cc: In function ‘int main(int, char**)’:
t.cc:12:30: error: no matching function for call to
‘print_action(function&)’
   print_action(t);
  ^

t.cc:6:6: note: candidate: template void
print_action(function)
 void print_action(function action_factory)
  ^~~~

t.cc:6:6: note:   template argument deduction/substitution failed:
t.cc:12:30: note:   mismatched types ‘string’ and ‘int’
   print_action(t);
  ^

t.cc:13:17: error: no matching function for call to
‘print_action(function&)’
   print_action(t);
 ^

t.cc:6:6: note: candidate: template void
print_action(function)
 void print_action(function action_factory)
  ^~~~

t.cc:6:6: note:   template argument deduction/substitution failed:
t.cc:13:17: note:   deduced conflicting types for parameter ‘ActionType’
(‘string’ and ‘int’)
   print_action(t);
 ^

[Bug c++/69205] Place a variadic template in front of function parameter when it is known

[mohsen.tamiz at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=69205

--- Comment #1 from mohsen  ---
I reported this bug one week ago but I did not get any feedback about this. I
am not familiar about procedures of answering a bug. Please take me any
suggestion about this bug or at least the minimum time that may take for a bug
until it is inspected. 
Thanks in advance.

[Bug c++/69205] Place a variadic template in front of function parameter when it is known

[redi at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=69205

Jonathan Wakely  changed:

   What|Removed |Added

   Severity|major   |normal