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* [Bug c++/49470] New: no matching constructor for initialization errors not detected in g++
@ 2011-06-20  3:06 howarth at nitro dot med.uc.edu
  2011-06-20  3:12 ` [Bug c++/49470] " howarth at nitro dot med.uc.edu
                   ` (3 more replies)
  0 siblings, 4 replies; 5+ messages in thread
From: howarth at nitro dot med.uc.edu @ 2011-06-20  3:06 UTC (permalink / raw)
  To: gcc-bugs

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49470

           Summary: no matching constructor for initialization errors not
                    detected in g++
           Product: gcc
           Version: 4.7.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
        AssignedTo: unassigned@gcc.gnu.org
        ReportedBy: howarth@nitro.med.uc.edu


Currently g++ doesn't warn or error on invalid code such as...

template <class T> class Array1D {
  Array1D(int n, T *a);
};
template<typename T>
struct A {
  Array1D<int> x;
  A() : x(1, (const int*)0) {}
};

for which clang++ produces the error...

[MacPro:~] howarth% clang++ -c invalid.cc
invalid.cc:7:9: error: no matching constructor for initialization of
'Array1D<int>'
  A() : x(1, (const int*)0) {}
        ^ ~~~~~~~~~~~~~~~~
invalid.cc:2:3: note: candidate constructor not viable: 2nd argument ('const
int *') would lose const qualifier
  Array1D(int n, T *a);
  ^
invalid.cc:1:26: note: candidate constructor (the implicit copy constructor)
not viable: requires 1 argument, but 2 were provided
template <class T> class Array1D {
                         ^
1 error generated.


^ permalink raw reply	[flat|nested] 5+ messages in thread
end of thread, other threads:[~2011-06-22 20:44 UTC | newest]

Thread overview: 5+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2011-06-20  3:06 [Bug c++/49470] New: no matching constructor for initialization errors not detected in g++ howarth at nitro dot med.uc.edu
2011-06-20  3:12 ` [Bug c++/49470] " howarth at nitro dot med.uc.edu
2011-06-20 10:06 ` redi at gcc dot gnu.org
2011-06-20 10:27 ` redi at gcc dot gnu.org
2011-06-22 20:44 ` [Bug c++/49470] optional diagnostic not given for invalid mem-initializer in uninstantiated template jason at gcc dot gnu.org

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