https://gcc.gnu.org/bugzilla/show_bug.cgi?id=92432
Bug ID: 92432
Summary: Regression: ICE on non-constant expression as template
argument
Product: gcc
Version: 9.2.1
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: daniel at ekpyron dot org
Target Milestone: ---
Found on an up-to-date x86_64 archlinux system using "gcc 9.2.0-4".
However, I think this affects all versions of gcc >= 8.0 and is independent of
the archlinux package.
Source code:
#include <array>
template<typename T> static constexpr void t(std::initializer_list<int> x) {
std::array<int, x.size()> v; }
Results in:
t.cpp: In function 'constexpr void t(std::initializer_list<int>)':
t.cpp:2:102: internal compiler error: in coerce_template_parms, at cp/pt.c:8625
Expected (this should be what gcc < 8.0 does):
t.cpp: In function 'constexpr void t(std::initializer_list<int>)':
t.cpp:2:100: in constexpr expansion of 'x.std::initializer_list<int>::size()'
t.cpp:2:102: error: 'x' is not a constant expression
I hope this is not a duplicate, but a search for "cp/pt.c:8625" yielded no
results, so I guess this is new.
