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* [Bug c++/56749] New: weird interaction between scoped enum used as non-type template parameter and template lookup
@ 2013-03-26 22:22 abigagli at gmail dot com
2013-03-26 23:16 ` [Bug c++/56749] [4.8/4.9 Regression] " paolo.carlini at oracle dot com
` (2 more replies)
0 siblings, 3 replies; 4+ messages in thread
From: abigagli at gmail dot com @ 2013-03-26 22:22 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=56749
Bug #: 56749
Summary: weird interaction between scoped enum used as non-type
template parameter and template lookup
Classification: Unclassified
Product: gcc
Version: 4.8.1
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
AssignedTo: unassigned@gcc.gnu.org
ReportedBy: abigagli@gmail.com
Hi, g++-4.81 built from svn r197010 on x86_64-apple-darwin12.3.0 with clang3.2.
I find the following unexpected:
enum normal_enum
{
not_scoped1,
not_scoped2
};
enum class scoped_enum
{
scoped1,
scoped2
};
template <normal_enum N=not_scoped1>
class A
{
public:
template <typename T>
void fun ()
{
}
};
template <scoped_enum N=scoped_enum::scoped1>
class B
{
public:
template <typename T>
void fun ()
{
}
};
template <typename T>
void tfun ()
{
A<> a;
a.fun<char>(); <------------ THIS IS FINE
B<> b_defaulted;
B<scoped_enum::scoped1> b_explicited;
//b_defaulted.fun<char>(); <------------ UNEXPECTED: THIS FAILS
b_defaulted.template fun<char>(); <------------ THIS IS FINE
//b_explicited.fun<char>(); <------------ UNEXPECTED: THIS FAILS
b_explicited.template fun<char>(); <------------ THIS IS FINE
}
int main(int argc, char const *argv[])
{
tfun<int>();
return 0;
}
IOW, it seems like using a scoped enum as a non-type template for a class,
induces a requirement for template disambiguation when invoking a member
template which is not happpening using an normal enum.
Note that neither gcc 4.7.2 nor clang have this behavior.
I assume this is not expected, as I would say "fun" is never a dependent name
in the snippet above as neither a, b_defaulted and b_eplicited are, regardless
of using a scoped enum or a normal enum as the non-type template.
Regards,
Andrea Bigagli.
^ permalink raw reply [flat|nested] 4+ messages in thread
* [Bug c++/56749] [4.8/4.9 Regression] weird interaction between scoped enum used as non-type template parameter and template lookup
2013-03-26 22:22 [Bug c++/56749] New: weird interaction between scoped enum used as non-type template parameter and template lookup abigagli at gmail dot com
@ 2013-03-26 23:16 ` paolo.carlini at oracle dot com
2013-03-27 13:37 ` jason at gcc dot gnu.org
2013-03-29 18:38 ` jason at gcc dot gnu.org
2 siblings, 0 replies; 4+ messages in thread
From: paolo.carlini at oracle dot com @ 2013-03-26 23:16 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=56749
Paolo Carlini <paolo.carlini at oracle dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2013-03-26
Summary|weird interaction between |[4.8/4.9 Regression] weird
|scoped enum used as |interaction between scoped
|non-type template parameter |enum used as non-type
|and template lookup |template parameter and
| |template lookup
Ever Confirmed|0 |1
^ permalink raw reply [flat|nested] 4+ messages in thread
* [Bug c++/56749] [4.8/4.9 Regression] weird interaction between scoped enum used as non-type template parameter and template lookup
2013-03-26 22:22 [Bug c++/56749] New: weird interaction between scoped enum used as non-type template parameter and template lookup abigagli at gmail dot com
2013-03-26 23:16 ` [Bug c++/56749] [4.8/4.9 Regression] " paolo.carlini at oracle dot com
@ 2013-03-27 13:37 ` jason at gcc dot gnu.org
2013-03-29 18:38 ` jason at gcc dot gnu.org
2 siblings, 0 replies; 4+ messages in thread
From: jason at gcc dot gnu.org @ 2013-03-27 13:37 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=56749
Jason Merrill <jason at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |rejects-valid
Status|NEW |ASSIGNED
CC| |jason at gcc dot gnu.org
AssignedTo|unassigned at gcc dot |jason at gcc dot gnu.org
|gnu.org |
Target Milestone|--- |4.8.1
^ permalink raw reply [flat|nested] 4+ messages in thread
* [Bug c++/56749] [4.8/4.9 Regression] weird interaction between scoped enum used as non-type template parameter and template lookup
2013-03-26 22:22 [Bug c++/56749] New: weird interaction between scoped enum used as non-type template parameter and template lookup abigagli at gmail dot com
2013-03-26 23:16 ` [Bug c++/56749] [4.8/4.9 Regression] " paolo.carlini at oracle dot com
2013-03-27 13:37 ` jason at gcc dot gnu.org
@ 2013-03-29 18:38 ` jason at gcc dot gnu.org
2 siblings, 0 replies; 4+ messages in thread
From: jason at gcc dot gnu.org @ 2013-03-29 18:38 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=56749
Jason Merrill <jason at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution| |FIXED
--- Comment #1 from Jason Merrill <jason at gcc dot gnu.org> 2013-03-29 18:38:44 UTC ---
Fixed for 4.8.1.
^ permalink raw reply [flat|nested] 4+ messages in thread
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2013-03-26 22:22 [Bug c++/56749] New: weird interaction between scoped enum used as non-type template parameter and template lookup abigagli at gmail dot com
2013-03-26 23:16 ` [Bug c++/56749] [4.8/4.9 Regression] " paolo.carlini at oracle dot com
2013-03-27 13:37 ` jason at gcc dot gnu.org
2013-03-29 18:38 ` jason at gcc dot gnu.org
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