https://gcc.gnu.org/bugzilla/show_bug.cgi?id=79520
Bug ID: 79520
Summary: Spurious caching for constexpr arguments
Product: gcc
Version: unknown
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: colu...@gmx-topmail.de
Target Milestone: ---
constexpr int f(int const& x) {return x;}
constexpr struct S {
int x = 0;
constexpr S() {(void)f(x); x = 1;}
} s;
static_assert(f(s.x) == 1, "");
---
Presumably s.x is taken to be "immutable" because s is constexpr, while that's
obviously not true during the period of construction.
