constexpr constructors can't initialize constexpr variables #11529
Description
| Bugzilla Link | 11157 |
| Resolution | DUPLICATE |
| Resolved on | Oct 17, 2011 16:31 |
| Version | trunk |
| OS | Linux |
| Attachments | demo source code |
| Reporter | LLVM Bugzilla Contributor |
| CC | @DougGregor,@efriedma-quic,@zygoloid |
Extended Description
With the attached source file, I get the following error message:
clang++ -std=c++11 -c constexpr.cc
constexpr.cc:7:13: error: constexpr variable 'a' must be initialized by a constant expression
constexpr X a(2);
^~~~
1 error generated.
The second variable "b" which calls the default constructor gets initialized correctly, but the "constexpr" constructor cannot be called to initialize the variable "a".