Call to consteval function in member initializer cause compilation error

[finomen]

If consteval function called in method initializer and this class used in both consteval and not consteval functions, compilation fails with

<source>:4:17: error: cannot take address of consteval function 'baz' outside of an immediate invocation
    int mSize = baz();

consteval int baz() { return 0;}

struct S {
    int mSize = baz();
};

consteval void bar() {
    S s;
}

void foo() {
    S s;
}

This bug is present in 16.x.x and >=18.0.0. (https://godbolt.org/z/o6EnWvvW7)

Issue was introduced in ca61961
After it was fixed in 4676885
And happens again after baf6bd3

[llvmbot]

@llvm/issue-subscribers-clang-frontend

Author: Nikolai Filchenko (finomen)

If consteval function called in method initializer and this class used in both consteval and not consteval functions, compilation fails with ``` <source>:4:17: error: cannot take address of consteval function 'baz' outside of an immediate invocation int mSize = baz(); ```

consteval int baz() { return 0;}

struct S {
    int mSize = baz();
};

consteval void bar() {
    S s;
}

void foo() {
    S s;
}

This bug is present in 16.x.x and >=18.0.0. (https://godbolt.org/z/o6EnWvvW7)

Issue was introduced in ca61961
After it was fixed in 4676885
And happens again after baf6bd3

[tbaederr]

CC @cor3ntin