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* [Bug c++/53837] New: Unpacking variadic template parameters in a method parameter default value gives parse error @ 2012-07-03 11:28 johannes at laire dot fi 2012-07-03 17:39 ` [Bug c++/53837] " daniel.kruegler at googlemail dot com ` (2 more replies) 0 siblings, 3 replies; 4+ messages in thread From: johannes at laire dot fi @ 2012-07-03 11:28 UTC (permalink / raw) To: gcc-bugs http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53837 Bug #: 53837 Summary: Unpacking variadic template parameters in a method parameter default value gives parse error Classification: Unclassified Product: gcc Version: 4.7.1 Status: UNCONFIRMED Severity: minor Priority: P3 Component: c++ AssignedTo: unassigned@gcc.gnu.org ReportedBy: johannes@laire.fi -------- bug.cpp -------- template <typename... Args> int f() { return 42; } template <typename... Args> struct B1 { B1(int i = f<Args...>()); // ERROR void m(int i = f<Args...>()); // ERROR }; struct B2 { template <typename... Args> void m(int i = f<Args...>()); // ERROR }; template <typename... Args> struct B3 { B3(int i = call_f()); // OK void m(int i = call_f()); // OK static int call_f() { return f<Args...>(); } }; template <typename... Args> void g(int i = f<Args...>()); // OK int main() {} -------- bug.cpp -------- $ g++ -std=c++0x bug.cpp bug.cpp:6:22: error: expected ‘)’ before ‘>’ token bug.cpp:6:19: error: expected ‘;’ at end of member declaration bug.cpp:6:22: error: expected unqualified-id before ‘>’ token bug.cpp:7:26: error: expected ‘)’ before ‘>’ token bug.cpp:7:23: error: expected ‘;’ at end of member declaration bug.cpp:7:26: error: expected unqualified-id before ‘>’ token bug.cpp:6:13: error: parse error in template argument list bug.cpp:7:17: error: parse error in template argument list bug.cpp:12:26: error: expected ‘)’ before ‘>’ token bug.cpp:12:26: error: expected initializer before ‘>’ token $ clang++ -std=c++0x bug.cpp $ GCC versions 4.4.3, 4.6.2, and 4.7.1 give parse errors on the marked lines. Clang 3.0 doesn't complain. Note that g() parses fine. ^ permalink raw reply [flat|nested] 4+ messages in thread
* [Bug c++/53837] Unpacking variadic template parameters in a method parameter default value gives parse error 2012-07-03 11:28 [Bug c++/53837] New: Unpacking variadic template parameters in a method parameter default value gives parse error johannes at laire dot fi @ 2012-07-03 17:39 ` daniel.kruegler at googlemail dot com 2012-10-10 19:37 ` paolo.carlini at oracle dot com 2014-11-26 16:47 ` paolo.carlini at oracle dot com 2 siblings, 0 replies; 4+ messages in thread From: daniel.kruegler at googlemail dot com @ 2012-07-03 17:39 UTC (permalink / raw) To: gcc-bugs http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53837 Daniel Krügler <daniel.kruegler at googlemail dot com> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |daniel.kruegler at | |googlemail dot com --- Comment #1 from Daniel Krügler <daniel.kruegler at googlemail dot com> 2012-07-03 17:38:56 UTC --- The same problem exists for gcc 4.8.0 20120624 (experimental) ^ permalink raw reply [flat|nested] 4+ messages in thread
* [Bug c++/53837] Unpacking variadic template parameters in a method parameter default value gives parse error 2012-07-03 11:28 [Bug c++/53837] New: Unpacking variadic template parameters in a method parameter default value gives parse error johannes at laire dot fi 2012-07-03 17:39 ` [Bug c++/53837] " daniel.kruegler at googlemail dot com @ 2012-10-10 19:37 ` paolo.carlini at oracle dot com 2014-11-26 16:47 ` paolo.carlini at oracle dot com 2 siblings, 0 replies; 4+ messages in thread From: paolo.carlini at oracle dot com @ 2012-10-10 19:37 UTC (permalink / raw) To: gcc-bugs http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53837 Paolo Carlini <paolo.carlini at oracle dot com> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|UNCONFIRMED |NEW Last reconfirmed| |2012-10-10 Ever Confirmed|0 |1 Severity|minor |normal --- Comment #2 from Paolo Carlini <paolo.carlini at oracle dot com> 2012-10-10 19:37:00 UTC --- Confirming. ^ permalink raw reply [flat|nested] 4+ messages in thread
* [Bug c++/53837] Unpacking variadic template parameters in a method parameter default value gives parse error 2012-07-03 11:28 [Bug c++/53837] New: Unpacking variadic template parameters in a method parameter default value gives parse error johannes at laire dot fi 2012-07-03 17:39 ` [Bug c++/53837] " daniel.kruegler at googlemail dot com 2012-10-10 19:37 ` paolo.carlini at oracle dot com @ 2014-11-26 16:47 ` paolo.carlini at oracle dot com 2 siblings, 0 replies; 4+ messages in thread From: paolo.carlini at oracle dot com @ 2014-11-26 16:47 UTC (permalink / raw) To: gcc-bugs https://gcc.gnu.org/bugzilla/show_bug.cgi?id=53837 Paolo Carlini <paolo.carlini at oracle dot com> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|NEW |RESOLVED Known to work| |4.9.0, 5.0 Resolution|--- |FIXED Target Milestone|--- |4.9.0 --- Comment #3 from Paolo Carlini <paolo.carlini at oracle dot com> --- Fixed long time ago. ^ permalink raw reply [flat|nested] 4+ messages in thread
end of thread, other threads:[~2014-11-26 16:47 UTC | newest] Thread overview: 4+ messages (download: mbox.gz / follow: Atom feed) -- links below jump to the message on this page -- 2012-07-03 11:28 [Bug c++/53837] New: Unpacking variadic template parameters in a method parameter default value gives parse error johannes at laire dot fi 2012-07-03 17:39 ` [Bug c++/53837] " daniel.kruegler at googlemail dot com 2012-10-10 19:37 ` paolo.carlini at oracle dot com 2014-11-26 16:47 ` paolo.carlini at oracle dot com
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