http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54253
Bug #: 54253
Summary: [C++11] constexpr constructor crashes with polymorphic
base classes
Classification: Unclassified
Product: gcc
Version: 4.7.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
AssignedTo: unassig...@gcc.gnu.org
ReportedBy: m...@koios.de
Created attachment 28010
--> http://gcc.gnu.org/bugzilla/attachment.cgi?id=28010
preprocessed source
In _some_ constellations, g++ exits with a segmentation fault:
I could not figure out a pattern to reduce all to a common 'sourceproblem', so
here is a list of what I tried:
* One polymorphic base class:
** implicit base constructor, explicitly called (as in the example): crashes
** implicit base constructor (even with default non-static member assignments),
implicitly called: works
** explicit constexpr base constructor, explicitly called: works
** explicit constexpr base constructor, implicitly called: works
* Multiple Inhertiance, first Base is polymorphic:
nearly the same as above, except that it doesn't crash in the first case but
says
const3.cc: In constructor 'constexpr Derived::Derived()':
const3.cc:15:42: error: uninitialized member 'Derived::<anonymous>' in
'constexpr' constructor
const3.cc:15: confused by earlier errors, bailing out
* Multiple Inhertiance, second Base is polymorphic:
crashes always
