https://gcc.gnu.org/bugzilla/show_bug.cgi?id=97475
Bug ID: 97475
Summary: An unnamed class with a typedef name for linkage
purposes having a method.
Product: gcc
Version: unknown
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: anders.granlund.0 at gmail dot com
Target Milestone: ---
Consider the following c++ program:
typedef struct {
void f();
} X;
int main()
{
}
It is not rejected by the compiler when compiling with "-std=c++20
-pedantic-errors".
The expected behaviour is that it should be rejected by section 9.2.3 paragraph
10 in the c++ 20 standard:
"
10 An unnamed class with a typedef name for linkage purposes shall not
(10.1) — declare any members other than non-static data members, member
enumerations, or member classes,
(10.2) — have any base classes or default member initializers, or
(10.3) — contain a lambda-expression,
and all member classes shall also satisfy these requirements (recursively).
"
Note that clang correctly does reject the program:
https://godbolt.org/z/rTerza
