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From: "drwowe at yahoo dot com" <gcc-bugzilla@gcc.gnu.org> To: gcc-bugs@gcc.gnu.org Subject: [Bug c++/52966] New: ill-formed template constexpr functions are accepted? Date: Thu, 12 Apr 2012 23:45:00 -0000 [thread overview] Message-ID: <bug-52966-4@http.gcc.gnu.org/bugzilla/> (raw) http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52966 Bug #: 52966 Summary: ill-formed template constexpr functions are accepted? Classification: Unclassified Product: gcc Version: unknown Status: UNCONFIRMED Severity: minor Priority: P3 Component: c++ AssignedTo: unassigned@gcc.gnu.org ReportedBy: drwowe@yahoo.com The following code successfully compiles on g++ 4.7.0 with -std=c++11. I'm not a language lawyer, but it seems like it shouldn't since the A::two() function breaks the constexpr rules, either at template definition or template instantiation time. ------ template<class T> struct A { static int two_nonconst() { return 2; } static constexpr int two() { return two_nonconst(); } } constexpr int two() { return A<int>::two(); } ------ There is no error message until you actually try to use the two() function in an appropriate context, which could be very confusing. ------ int x[two()]; ------ error: size of array 'x' is not an integral constant-expression
next reply other threads:[~2012-04-12 23:45 UTC|newest] Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top 2012-04-12 23:45 drwowe at yahoo dot com [this message] 2015-07-18 15:43 ` [Bug c++/52966] " yury at shurup dot com
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