[cfe-commits] r153723 - in /cfe/trunk: lib/CodeGen/CGDecl.cpp lib/CodeGen/ItaniumCXXABI.cpp test/CodeGenCXX/static-init.cpp

[Chandler Carruth]

On Thu, Mar 29, 2012 at 9:25 PM, John McCall <rjmccall at apple.com> wrote:

> Author: rjmccall
> Date: Thu Mar 29 23:25:14 2012
> New Revision: 153723
>
> URL: http://llvm.org/viewvc/llvm-project?rev=153723&view=rev
> Log:
> When emitting a static local variable in C++, handle
> the case that the variable already exists.  Partly this is just
> protection against people making crazy declarations with custom
> asm labels or extern "C" names that intentionally collide with
> the manglings of such variables,
>

We've started to see build failures due to this in libc-intercepting
libraries. Is this expected?

I'm still digging into the root cause, but I wanted to immediately point
out that the diagnostic isn't very helpful here...

foo/bar.cc:42:7: error: problem emitting static variable: already present
> as different kind of symbol


What kind of symbol was already present? Even better, can we (also) show
the code that led to the symbol already being present in a note?
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