https://gcc.gnu.org/bugzilla/show_bug.cgi?id=125262
--- Comment #1 from Drea Pinski <pinskia at gcc dot gnu.org> ---
Reduced:
```
#ifndef __GXX_CONSTEXPR_ASM__
# error "missing support for constexpr asm"
#endif
struct s1
{
char a1[16];//={};
int len;
template<int a>
constexpr s1(const char (&s)[a])
{
if(a>16) __builtin_trap();
for(int i =0;i < a; i++)
a1[i] = s[i];
len = a;
}
constexpr int size() { return len;}
constexpr const char *data() { return a1; }
};
void f()
{
asm((s1("# ")));
}
```
The question becomes is incompletely initialized variable valid here. I am not
sure.
