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-rw-r--r--src/runtime/runtime.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/src/runtime/runtime.h b/src/runtime/runtime.h
index 02563fd36..e6db8cb83 100644
--- a/src/runtime/runtime.h
+++ b/src/runtime/runtime.h
@@ -271,6 +271,8 @@ struct G
uintptr stackguard0; // cannot move - also known to liblink, libmach, runtime/cgo
uintptr stackbase; // cannot move - also known to libmach, runtime/cgo
Panic* panic; // cannot move - also known to liblink
+ // stackguard1 is checked by C code; it is set to ~0 in ordinary (non-g0, non-gsignal) goroutines
+ uintptr stackguard1; // cannot move - also known to liblink
Defer* defer;
Gobuf sched;
uintptr syscallstack; // if status==Gsyscall, syscallstack = stackbase to use during gc