https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80864
Bug ID: 80864
Summary: Brace-initialization of a constexpr variable of an
array in a POD triggers ICE from templates
Product: gcc
Version: 6.3.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: oss at florianjw dot de
Target Milestone: ---
The following code triggers an ICE in GCC 6.3.0 and 6.3.1 under independent
systems:
``````````````````````````````````````````````````````````````````````````
struct array {
char c[1];
};
template <typename T>
void gun() {
constexpr auto c = array{{}};
}
void fun() {
gun<int>();
}
``````````````````````````````````````````````````````````````````````````
`g++ test.cpp`:
``````````````````````````````````````````````````````````````````````````
test.cpp: In instantiation of ‘void gun() [with T = int]’:
test.cpp:13:11: required from here
test.cpp:8:29: internal compiler error: in reshape_init_r, at cp/decl.c:5898
constexpr auto c = array{{}};
^
Please submit a full bug report,
with preprocessed source if appropriate.
See <file:///usr/share/doc/gcc-6/README.Bugs> for instructions.
``````````````````````````````````````````````````````````````````````````
I didn't find a bug-report with this exact problem, but this one could possibly
be related:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=79607
