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-rw-r--r--erts/lib_src/common/ethr_mutex.c5
1 files changed, 4 insertions, 1 deletions
diff --git a/erts/lib_src/common/ethr_mutex.c b/erts/lib_src/common/ethr_mutex.c
index 95fedc0ba2..a2fbf3a454 100644
--- a/erts/lib_src/common/ethr_mutex.c
+++ b/erts/lib_src/common/ethr_mutex.c
@@ -2101,7 +2101,10 @@ rwmutex_unlock_wake(ethr_rwmutex *rwmtx, int have_w, long initial,
if (!have_w) {
act = ethr_atomic_read_bor(&rwmtx->mtxb.flgs,
ETHR_RWMTX_W_FLG__);
- ETHR_ASSERT((act & ~ETHR_RWMTX_WAIT_FLGS__) == 0);
+ ETHR_ASSERT((act & ~(ETHR_RWMTX_WAIT_FLGS__
+ | (rwmtx->type == ETHR_RWMUTEX_TYPE_NORMAL
+ ? 0
+ : ETHR_RWMTX_R_PEND_UNLCK_MASK__))) == 0);
ETHR_ASSERT(act & ETHR_RWMTX_W_WAIT_FLG__);
act |= ETHR_RWMTX_W_FLG__;
}