http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55226
Bug #: 55226
Summary: [C++11] ICE regression in regard to anonymous unions
and constexpr
Classification: Unclassified
Product: gcc
Version: 4.8.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
AssignedTo: unassig...@gcc.gnu.org
ReportedBy: daniel.krueg...@googlemail.com
The following code gives me now a regressive ICE when switching from my
previous gcc 4.8 (last successfully tested: 4.8.0 20121014 (experimental)) to
gcc 4.8.0 20121104 (experimental) using the compiler flags
-Wall -pedantic -std=c++11
//----------------------
template<class T>
struct optional_data
{
union {
unsigned char for_value_init_;
T value_;
};
constexpr optional_data() : for_value_init_() {}
};
struct ncnm
{
ncnm(ncnm&&) = delete;
ncnm(const ncnm&) = delete;
};
int main()
{
optional_data<ncnm> o; // #20
}
//----------------------
"In function 'int main()':|
20|internal compiler error: in gimplify_init_ctor_eval, at gimplify.c:3787|
"
A tentative guess is that this could have been a side-effect of the fix applied
to bug 54922.
