https://gcc.gnu.org/bugzilla/show_bug.cgi?id=96868
Bug ID: 96868
Summary: C++20 designated initializer erroneous warnings
Product: gcc
Version: unknown
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: matt at godbolt dot org
Target Milestone: ---
The following code, with -Wall -Wextra, GCC 10.x or trunk, -std=c++20:
```
struct MyObj {
MyObj();
};
struct Test {
int a{};
MyObj obj;
};
Test t() {
Test t{.a = 1};
return t;
}
```
Creates a warning:
```
<source>: In function 'Test t()':
<source>:11:18: warning: missing initializer for member 'Test::obj'
[-Wmissing-field-initializers]
11 | Test t{.a = 1};
| ^
```
The "obj" is not missing initialization: the generated code correctly calls
MyObj::MyObj().
clang issues no diagnostic on the same code (even with -Weverything).
May be a duplicate of bug #82283 or bug #84685, but those have far more
complex-looking initialiser lists.
CE link: https://godbolt.org/z/b75P6r
