clang aborts on tentative definition with incomplete type

[llvmbot]

Bugzilla Link	3980
Resolution	FIXED
Resolved on	Apr 16, 2009 02:13
Version	unspecified
OS	Linux
Attachments	Allow tentative definitions before type is fully known, Correct testcase for patch
Reporter	LLVM Bugzilla Contributor

Extended Description

When processing a tentative definition with a currently incomplete type, clang tries to emit the code immediately and fails.
E.g.
struct foo x;
struct foo { int a; };

It should be equivalent to a definition with the type as known at the end of the file (C99 6.9.2p2 I think).

Daniel Dunbar made a brief comment on the problem at http://llvm.org/bugs/show_bug.cgi?id=3461#c5.

[llvmbot]

Fixed here: http://lists.cs.uiuc.edu/pipermail/cfe-commits/Week-of-Mon-20090413/015666.html

Sorry Tim, somehow I missed your patch.

[llvmbot]

No worries. It's very good to see how you approached something I'd looked at before the fix.