Commit 7e444802 authored by Simon Peyton Jones's avatar Simon Peyton Jones

Tiny comment on the change from StgWord8 to StgWord

c.f. commit 0b0fec53
parent 43856a00
......@@ -122,7 +122,7 @@ typedef struct gc_thread_ {
OSThreadId id; // The OS thread that this struct belongs to
SpinLock gc_spin;
SpinLock mut_spin;
volatile StgWord wakeup;
volatile StgWord wakeup; // NB not StgWord8; only StgWord is guaranteed atomic
nat thread_index; // a zero based index identifying the thread
rtsBool idle; // sitting out of this GC cycle
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