Andrea Corallo <[email protected]> writes: > Stefan Monnier <[email protected]> writes: > >>> Shouldn't make-temp-file-internal return a non predictable file name? >> >> Nope. It's less predictable but it's still predictable. >> >>> Otherwise what's the point of using make-temp-file in the first place if >>> the temporary name is predictable? >> >> `make-temp-name` uses `O_EXCL | O_CREAT` so as to close the race >> condition: if someone predicated the filename, we detect it atomically >> and we try again. >> >> You might like to check >> >> >> https://wiki.sei.cmu.edu/confluence/display/c/FIO21-C.+Do+not+create+temporary+files+in+shared+directories > > Thanks for the pointer. > > I'm still not really convinced we have a problem here with trampolines. > With `make-temp-file' we are really only choosing the filename and > suggesting it to libgccjit, this last one will perform the file > creation. I'd be surprised if GCC does not handle this correctly, and > in case shouldn't this be a GCC bug? > > OTOH on a slightly differnt subject and in light of this, I think we > should probably backport e6043641d30 into emacs-30, so that eln files > are created onace and only by libgccjit. Eli WDYT?
And BTW, probably also in emacs-28 if we are doing another release. Andrea
