search for: visibililti

On Feb 26, 2016 8:50 PM, "Hal Finkel" <hfinkel at anl.gov> wrote: > *From: *"James Y Knight via llvm-dev" <llvm-dev at lists.llvm.org> > *To: *"Sanjoy Das" <sanjoy at playingwithpointers.com> > *Cc: *"llvm-dev" <llvm-dev at lists.llvm.org> > *Sent: *Thursday, February 25, 2016 1:41:43 PM > *Subject: *Re: [llvm-dev]

----- Original Message ----- > From: "James Y Knight via llvm-dev" <llvm-dev at lists.llvm.org> > To: "Sanjoy Das" <sanjoy at playingwithpointers.com> > Cc: "llvm-dev" <llvm-dev at lists.llvm.org> > Sent: Thursday, February 25, 2016 1:41:43 PM > Subject: Re: [llvm-dev] Possible soundness issue with > available_externally (split

----- Original Message ----- > From: "James Y Knight" <jyknight at google.com> > To: "Hal Finkel" <hfinkel at anl.gov> > Cc: "Sanjoy Das" <sanjoy at playingwithpointers.com>, "llvm-dev" > <llvm-dev at lists.llvm.org> > Sent: Monday, February 29, 2016 9:31:24 AM > Subject: Re: [llvm-dev] Possible soundness issue with

Hi everyone, Clang/LLVM's support for ELF interposition is in a confusing state, and I propose making a few (hopefully simple) adjustments in order to bring our model into a self-consistent state. The problem: On ELF systems, global symbols can be interposed. This means, for example, that calls to global functions in some (shared) library defined in that same library might end up being

I think that all makes sense. You're just adding the missing non-ODR conterpart of 'external' linkage. I could imagine having "external / external_odr" linkage for example. That said, do you think we should take the opportunity to split out a bit for interposability so that we can kill off the *_odr linkage variants? Today's non-ODR weak functions would look more like

You present a good case for not using "protected" visibility in ELF, despite it being exactly what it is supposed to mean. >From what http://www.airs.com/blog/archives/307 says, it sounds like the *correctness* issue with protected visibility is because LLVM is doing it wrong -- not an intrinsic property of protected visibility in ELF, or even ELF/x86. The blog says that the compiler

----- Original Message ----- > From: "Eric Christopher" <echristo at gmail.com> > To: "Reid Kleckner" <rnk at google.com>, "Hal Finkel" <hfinkel at anl.gov> > Cc: "llvm-dev" <llvm-dev at lists.llvm.org> > Sent: Tuesday, November 29, 2016 11:34:56 AM > Subject: Re: [llvm-dev] RFC: Add an "interposible" linkage