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-rw-r--r--Src/mem.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/Src/mem.c b/Src/mem.c
index a1744c6d9..8c7eb8017 100644
--- a/Src/mem.c
+++ b/Src/mem.c
@@ -497,7 +497,8 @@ popheap(void)
 		    continue;
 		}
 		h->next = NULL;
-	    }
+	    } else if (hl == h)	/* This is the last arena of all */
+		hl = NULL;
 #ifdef USE_MMAP
 	    munmap((void *) h, h->size);
 #else