[Bug c++/79520] Spurious caching for constexpr arguments

[msebor at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=79520

Martin Sebor <msebor at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
   Last reconfirmed|                            |2017-02-17
                 CC|                            |msebor at gcc dot gnu.org
     Ever confirmed|0                           |1

--- Comment #1 from Martin Sebor <msebor at gcc dot gnu.org> ---
Confirmed with today's top of trunk:

$ cat t.C && gcc -S -Wall -Wextra -Wpedantic t.C
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, "");
t.C:8:1: error: static assertion failed
 static_assert(f(s.x) == 1, "");
 ^~~~~~~~~~~~~