https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89224
Bug ID: 89224
Summary: subscript of NEON intrinsic discards const
Product: gcc
Version: 8.2.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: target
Assignee: unassigned at gcc dot gnu.org
Reporter: kretz at kde dot org
Target Milestone: ---
Test case (cf. https://godbolt.org/z/RFrftn):
#include <arm_neon.h>
template <class T>
void g(T &&x) {
x = 1;
}
auto f(const __Int8x8_t &x) {
g(x[0]);
//x[0] = 1; // ill-formed
}
decltype(x[0]) is `signed char&`, which can't be right if decltype(x) is
const-ref.
