[Bug c++/55724] [4.7/4.8 Regression] [C++11] Default type of a template value is not working

rguenth at gcc dot gnu.org gcc-bugzilla@gcc.gnu.org
Tue Dec 18 15:09:00 GMT 2012


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55724

Richard Biener <rguenth at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Target Milestone|---                         |4.7.3

--- Comment #2 from Richard Biener <rguenth at gcc dot gnu.org> 2012-12-18 15:08:44 UTC ---
trunk now says:

t.C: In function 'int main()':
t.C:3:25: error: no matching function for call to 'f(S<1>&)'
 int main() { S<1> s; f(s); }
                         ^
t.C:3:25: note: candidate is:
t.C:2:38: note: template<class T, T N> void f(S<N>)
 template<typename T = int, T N> void f(S<N>) {}
                                      ^
t.C:2:38: note:   template argument deduction/substitution failed:
t.C:3:25: note:   couldn't deduce template parameter 'N'
 int main() { S<1> s; f(s); }
                         ^



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