From 84357d1143fe4f9076253160f78fac6c2acc8e5b Mon Sep 17 00:00:00 2001
From: Teo Camarasu <teo.camarasu@tracsis.com>
Date: Thu, 8 Feb 2024 12:10:52 +0000
Subject: [PATCH] rts: only collect live words in nonmoving census when
non-concurrent
This avoids segfaults when the mutator modifies closures as we examine
them.
Resolves #24393
---
rts/sm/NonMoving.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/rts/sm/NonMoving.c b/rts/sm/NonMoving.c
index 7a5ce5562727..abe7ebe9703b 100644
--- a/rts/sm/NonMoving.c
+++ b/rts/sm/NonMoving.c
@@ -1221,7 +1221,8 @@ concurrent_marking:
traceConcSweepEnd();
#if defined(DEBUG)
if (RtsFlags.DebugFlags.nonmoving_gc)
- nonmovingPrintAllocatorCensus(true);
+ // only collect live words if the mutator isn't running.
+ nonmovingPrintAllocatorCensus(!concurrent);
#endif
#if defined(TRACING)
if (RtsFlags.TraceFlags.nonmoving_gc)
--
GitLab