[Bug c++/34715] always_inline with templates and not declared as always_inline but definition has it

["pinskia at gcc dot gnu dot org" <gcc-bugzilla at gcc dot gnu dot org>]

------- Comment #2 from pinskia at gcc dot gnu dot org  2008-01-31 19:51 -------
Hi, namespace has nothing to do with the issue,
The problem can be summarized as follows:
if you have a declaration of the template function without always_inline and
the definition with, the instationation does not get always_inline.

Take this testcase:
 template <class T>
 const T& min(const T& a, const T& b);
template <class T>
inline __attribute__ ((always_inline)) const T& 
min(const T& a, const T& b)
{
 return a < b ? a : b;
}
int main()
{
 int a, b;
 return min(a, b);
}

We don't inline min into main if we remove the declaration, we do.


-- 

pinskia at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
          Component|tree-optimization           |c++
     Ever Confirmed|0                           |1
           Keywords|                            |wrong-code
   Last reconfirmed|0000-00-00 00:00:00         |2008-01-31 19:51:49
               date|                            |
            Summary|always_inline does not seem |always_inline with templates
                   |to force inlining when used |and not declared as
                   |only in the definition of a |always_inline but definition
                   |function in a namespace     |has it


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=34715