On 07/28/2017 03:20 PM, Jakub Jelinek wrote: > I think it is seriously flawed optimization that should be at least turned > off by default. If people are willing to do this mess on ppc64le for some > libraries, they should request it explicitly, but we certainly shouldn't > make the implementation details part of exported ABI for all shared > libraries. Then the ABI depends even on compiler flags used to compile the > routines etc., you recompile with -O0 and suddenly you've changed ABI. > Furthermore, how does it work with symbol interposition? Say if malloc > happened to not clobber/use r2 and does not use r12, you suddenly couldn't > use ElectricFence or valgrind or AddressSanitizer where the implementation > would need to do that. All the things you list are potentially broken. As I said, it's not worth discussing this. It's not supportable. I don't even want to ship this as an optional feature. Thanks, Florian _______________________________________________ devel mailing list -- devel@xxxxxxxxxxxxxxxxxxxxxxx To unsubscribe send an email to devel-leave@xxxxxxxxxxxxxxxxxxxxxxx
