* Marc Feeley: >> On Dec 9, 2021, at 9:04 AM, Florian Weimer <fweimer@xxxxxxxxxx> wrote: >> >> If the life-time of the variables whose address has been taken has ended >> at the time of the call in a tail position, I expect GCC to turn it into >> a tail call (subject to the other constraints mentioned). > > That’s a very interesting point an I will give it a try. > > What worries me however is that you say “I expect GCC to turn it into > a tail call” and I really need “I guarantee that GCC will turn it into > a tail call”. I'm just a GCC user. And GCC is sufficiently complex and has many targets that maybe no GCC developer wants to make such a guarantee. If you don't want to patch glibc, you can perhaps inspect the generated assembler code. If the only indirect calls are the tail calls, it might work. Kind of like the Evil Mangler, but with less mangling. Thanks, Florian
