[Bug c++/15938] ICE with anonymous unions

["gdr at integrable-solutions dot net" <gcc-bugzilla at gcc dot gnu dot org>]

------- Additional Comments From gdr at integrable-solutions dot net  2005-07-21 02:35 -------
Subject: Re:  ICE with anonymous unions

"giovannibajo at libero dot it" <gcc-bugzilla@gcc.gnu.org> writes:

| Yes, it's because of my patch.
| 
| I would like to know if we agree that the code is invalid or not. It's a bit 
| hard to have a definitive answer since it is GNU C++ (uses an extension), but 
| given that the C frontend accepts it, I don't see why we should reject it. In 
| which case, this bug can be closed as fixed.

[I will address the validity issue as far as GNU C++ is concerned ]

Clearly, this being invalid according to ISO C++ and accepted by the C
front-end (with appropriate diagnostic), the only question that
remains is whether this is valid C++

  typedef union {
     struct unique_name_1 { int i; };
     struct unique_name_2 { char c; };
  } A;

The answer is yes.  Now, the remaning thing is apply the name 
restrictions as for unnamed unions.

Thanks,

-- Gaby


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=15938