On Thu, Mar 11, 2021 at 6:12 PM WX Lai <0xbill...@gmail.com> wrote: > The code: https://repl.it/talk/share/The-assignment-disappeared/127774 > > The assignment of the global variable `isRunning` in function `fg1` does not > work at all. > In fact, the assignment is deleted in the assembly (see the comment of the > link above). > > Why the compiler works like this? It disappeared after the process `short > circuit`, after all `isRunning` is used in `main` and `fg2`, making `fg2` > never return.
The compiler is correct. The change to isRunning is not observable in the goroutine that executes fg1() so there's no need to actually update the variable. -- You received this message because you are subscribed to the Google Groups "golang-nuts" group. To unsubscribe from this group and stop receiving emails from it, send an email to golang-nuts+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/golang-nuts/CAA40n-U95xctsLH9_mFg5cDs3UhK8xRLSWrb7Eppnc-KOu-M%3DA%40mail.gmail.com.
