runtime: throw in unreachable exitThread

Several OSes don't ever reach exitThread, On AIX, Plan9, Solaris, and
Windows, we throw if this function is accidentally reached. Do the same
on Darwin and OpenBSD for consistency.

Change-Id: Icd189b11179755a28b3ec48b267349c57facbf24
Reviewed-on: https://go-review.googlesource.com/c/go/+/443717
Reviewed-by: Cherry Mui <cherryyz@google.com>
Reviewed-by: Michael Knyszek <mknyszek@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Run-TryBot: Michael Pratt <mpratt@google.com>

diff --git a/src/runtime/sys_darwin.go b/src/runtime/sys_darwin.go
index 88af8944097e258657a08205d556a42c7bc0e99b..18b0490ebb41d91fe06528bc0bbac52abe259070 100644 (file)
--- a/src/runtime/sys_darwin.go
+++ b/src/runtime/sys_darwin.go
@@ -476,6 +476,7 @@ func pthread_cond_signal_trampoline()
 
 // Not used on Darwin, but must be defined.
 func exitThread(wait *atomic.Uint32) {
+       throw("exitThread")
 }
 
 //go:nosplit

diff --git a/src/runtime/sys_openbsd2.go b/src/runtime/sys_openbsd2.go
index f755cd528c8fce370b6ff6249c2776d30aad91f5..49bad8ed1d68cfff7c53cc1fadb02192059ac987 100644 (file)
--- a/src/runtime/sys_openbsd2.go
+++ b/src/runtime/sys_openbsd2.go
@@ -250,6 +250,7 @@ func sigaltstack_trampoline()
 
 // Not used on OpenBSD, but must be defined.
 func exitThread(wait *atomic.Uint32) {
+       throw("exitThread")
 }
 
 //go:nosplit