Something similar at https://sourceware.org/git/?p=glibc.git;a=blob;f=stdlib/abort.c;h=19882f3e3dc1ab830431506329c94dcf1d7cc252;hb=HEAD#l138 in the GNU C library. Sometimes you just need to be absolutely certain that a function doesn't return.
On Thu, Jun 15, 2017 at 2:16 PM Rob Pike <r...@golang.org> wrote: > Code comments can be helpful with unusual situations like this. > > -rob > > > On Fri, Jun 16, 2017 at 4:25 AM, Goodwin Lawlor <goodwin.law...@gmail.com> > wrote: > >> Thanks for the explanation. >> >> My random guess was that it's the compiler version of deleting your >> browser cache... If exit fails, blank as much memory as we can get our >> hands on. 😁 >> >> On 15 Jun 2017 6:34 pm, "Ian Lance Taylor" <i...@golang.org> wrote: >> >>> On Thu, Jun 15, 2017 at 10:28 AM, Tyler Compton <xavi...@gmail.com> >>> wrote: >>> > Why not just panic, though? And why the infinite loop, I wonder? >>> >>> The runtime is a special case in many ways, and this is among the more >>> special parts. This loop exists to catch problems while testing new >>> ports. If that loop is ever reached, something has gone badly wrong: >>> the exit call should have caused the program to exit. We can't assume >>> that panic is working. We can't really assume that anything is >>> working. What we want to do is stop the program. Since exit failed, >>> it's possible that a nil dereference will succeed. If that fails too, >>> we still have to do something, so we just loop. We can't return >>> because this is the main function that started the program; there is >>> nothing to return to. >>> >>> Ian >>> >>> > On Thu, Jun 15, 2017 at 9:56 AM Aldrin Leal <ald...@leal.eng.br> >>> wrote: >>> >> >>> >> Force a panic in case exit fails? >>> >> >>> >> -- >>> >> -- Aldrin Leal, <ald...@leal.eng.br> / http://about.me/aldrinleal >>> >> >>> >> On Thu, Jun 15, 2017 at 4:54 AM, <goodwin.law...@gmail.com> wrote: >>> >>> >>> >>> Hey, >>> >>> >>> >>> Learning golang at the moment and came across this at the end of func >>> >>> main() in proc.go in the golang source tree. >>> >>> >>> >>> exit(0) >>> >>> for { >>> >>> var x *int32 >>> >>> *x = 0 >>> >>> } >>> >>> >>> >>> Ln 198 - 202 https://golang.org/src/runtime/proc.go >>> >>> >>> >>> How is the for loop ever reached and what's the purpose of the >>> infinite >>> >>> loop, zeroing memory? >>> >>> >>> >>> Thanks, >>> >>> >>> >>> Goodwin >>> >>> >>> >>> -- >>> >>> 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. >>> >>> For more options, visit https://groups.google.com/d/optout. >>> >> >>> >> >>> >> -- >>> >> 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. >>> >> For more options, visit https://groups.google.com/d/optout. >>> > >>> > -- >>> > Tyler Compton >>> > Software Engineering >>> > >>> > -- >>> > 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. >>> > For more options, visit https://groups.google.com/d/optout. >>> >> -- >> 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. >> For more options, visit https://groups.google.com/d/optout. >> > > -- > 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. > For more options, visit https://groups.google.com/d/optout. > -- 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. For more options, visit https://groups.google.com/d/optout.
