https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67926
Bug ID: 67926
Summary: Using folding expressions in a constexpr context ice's
Product: gcc
Version: 6.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: gcc at magfr dot user.lysator.liu.se
Target Milestone: ---
Trying to compile the following results in an ICE.
$ cat z1.ii
template <bool ... T> concept bool C = (T && ...);
$ /usr/local/gcc-head/bin/g++ --version
g++ (GCC) 6.0.0 20151010 (experimental)
$ /usr/local/gcc-head/bin/g++ -std=c++1z -x c++ z1.ii
z1.ii:1:49: sorry, unimplemented: unexpected AST of kind unary_right_fold_expr
template <bool ... T> concept bool C = (T && ...);
^
z1.ii:1:49: internal compiler error: in potential_constant_expression_1, at
cp/constexpr.c:4629
