[Bug c++/60854] New: inline constructor of extern template

["joachim.schoeberl at tuwien dot ac.at" <gcc-bugzilla@gcc.gnu.org>]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=60854

            Bug ID: 60854
           Summary: inline constructor of extern template
           Product: gcc
           Version: 4.9.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
          Assignee: unassigned at gcc dot gnu.org
          Reporter: joachim.schoeberl at tuwien dot ac.at

Created attachment 32610
  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=32610&action=edit
source file

this code was accepted by gcc-4.8 up to (at least) gcc-4.9-20140323, but g++
(GCC) 4.9.0 20140411 (prerelease) complains.

compiled with
g++ -c -O2 --std=c++11 test.cpp



error message of gcc-4.9.0 prerelease:

test.cpp: In function ‘void Func()’:
test.cpp:5:46: error: inlining failed in call to always_inline
‘MyClass<T>::MyClass() [with T = double]’: function body not available
   __attribute__ ((__always_inline__)) inline MyClass () { ; }
                                              ^
test.cpp:12:19: error: called from here
   MyClass<double> x;
                   ^
>From gcc-bugs-return-449117-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Apr 15 21:32:16 2014
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From: "bernd.edlinger at hotmail dot de" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug bootstrap/60830] [4.9 Regression] ICE on bootstrapping on cygwin
Date: Tue, 15 Apr 2014 21:32:00 -0000
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http://gcc.gnu.org/bugzilla/show_bug.cgi?id`830

Bernd Edlinger <bernd.edlinger at hotmail dot de> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |bernd.edlinger at hotmail dot de

--- Comment #23 from Bernd Edlinger <bernd.edlinger at hotmail dot de> ---
FYI: I have 32-bit cygwin 1.7.28-2/XP SP2 here, and the following configuration
builds successfully:

../gcc-4.9.0-RC-20140411/configure --prefix=/<full-path-to-install>
--enable-languages=c,c++

gmp etc. in-tree with: contrib/download_prerequisites