On Fri, Jun 12, 2020 at 9:56 AM T L <tapir....@gmail.com> wrote: > > Is "uintptr(uintptr(ptr))" a typo? Or are there any other multiple chained > conversions examples?
That is not a typo. That is the case that worked in 1.14 and does not work in 1.15. Ian > On Friday, June 12, 2020 at 12:47:03 PM UTC-4, Axel Wagner wrote: >> >> AIUI: The safety rules haven't changed. How the compiler interprets them >> has. Previously, it interpreted them so as to allow multiple chained >> conversions. Now it doesn't. >> >> On Fri, Jun 12, 2020 at 2:28 PM T L <tapi...@gmail.com> wrote: >>> >>> >>> Package unsafe's safety rules allow converting an unsafe.Pointer into >>> uintptr when calling certain functions. Previously, in some cases, the >>> compiler allowed multiple chained conversions (for example, >>> syscall.Syscall(…, uintptr(uintptr(ptr)), …)). The compiler now requires >>> exactly one conversion. Code that used multiple conversions should be >>> updated to satisfy the safety rules. >>> >>> >>> I didn't find the difference from Go 1.14. >>> >>> -- >>> 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 golan...@googlegroups.com. >>> To view this discussion on the web visit >>> https://groups.google.com/d/msgid/golang-nuts/0f62c576-a1f9-467e-b99c-42f01edaa452o%40googlegroups.com. > > -- > 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/6139806c-8937-4f71-97a0-eae51fecdb8co%40googlegroups.com. -- 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/CAOyqgcWLCGCUNrB6o52Pz9_E3iwcvZOJWQ4j%2Bdf-1uhkc2jOEg%40mail.gmail.com.
