[LLVMbugs] [Bug 20076] clang-cl generates incorrect code for globals without static initializers which have references to imported functions

bugzilla-daemon at llvm.org bugzilla-daemon at llvm.org
Wed Jun 18 11:03:17 PDT 2014


http://llvm.org/bugs/show_bug.cgi?id=20076

Reid Kleckner <rnk at google.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|---                         |DUPLICATE

--- Comment #1 from Reid Kleckner <rnk at google.com> ---
When you use a dllimported function in a global constant initializer, you end
up getting the address of a thunk from the import library instead of the
address of the actual function.  It's worse for globals, where you get a link
error instead.

This will be hard to fix because a GlobalValue in LLVM is a Constant, and LLVM
optimizers will try to fold it into the initializer.

*** This bug has been marked as a duplicate of bug 19955 ***

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