GCC Array Typedef/Virtual Methods Bug

[lorenzo-gomez-windhover]

The following source code pattern causes GCC to write some structures as anonymous in the DWARF:

#define USE_VIRTUAL
#define USE_ARRAY
struct t1
{
    typedef struct
    {
    } t2;
#ifdef USE_VIRTUAL
    virtual void f1();
#endif
};

t1::t2 v1
#ifdef USE_ARRAY
[1]
#endif
;

This is NOT supposed to happen. It's a bug in GCC.

https://lists.dwarfstd.org/pipermail/dwarf-discuss/2024-December/002573.html