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| author | Ian Lance Taylor <iant@golang.org> | 2021-08-19 12:29:54 -0700 |
|---|---|---|
| committer | Ian Lance Taylor <iant@golang.org> | 2021-09-05 16:10:51 -0700 |
| commit | 74df79ec3e0a1af87e2619fc07533aba58680f0a (patch) | |
| tree | 321354569188d7b7de54cd23d3c6785030163cef /libgo/go/runtime | |
| parent | a827909537cf085e5673ca7816b7bd7151d89fc5 (diff) | |
| download | gcc-74df79ec3e0a1af87e2619fc07533aba58680f0a.zip gcc-74df79ec3e0a1af87e2619fc07533aba58680f0a.tar.gz gcc-74df79ec3e0a1af87e2619fc07533aba58680f0a.tar.bz2 | |
libgo: update to final Go 1.17 release
Reviewed-on: https://go-review.googlesource.com/c/gofrontend/+/343729
Diffstat (limited to 'libgo/go/runtime')
| -rw-r--r-- | libgo/go/runtime/mfinal.go | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/libgo/go/runtime/mfinal.go b/libgo/go/runtime/mfinal.go index 9059889..b4afaee 100644 --- a/libgo/go/runtime/mfinal.go +++ b/libgo/go/runtime/mfinal.go @@ -402,6 +402,10 @@ okarg: // Without the KeepAlive call, the finalizer could run at the start of // syscall.Read, closing the file descriptor before syscall.Read makes // the actual system call. +// +// Note: KeepAlive should only be used to prevent finalizers from +// running prematurely. In particular, when used with unsafe.Pointer, +// the rules for valid uses of unsafe.Pointer still apply. func KeepAlive(x interface{}) { // Introduce a use of x that the compiler can't eliminate. // This makes sure x is alive on entry. We need x to be alive |