32285: restart the fheap search in freeheap if the current fheap arena is about to be discarded; fixes crash

1 files changed, 9 insertions, 0 deletions

diff --git a/Src/mem.c b/Src/mem.c
index 5275c6c98..d15721c28 100644
--- a/Src/mem.c
+++ b/Src/mem.c
@@ -367,6 +367,15 @@ freeheap(void)
 	    }
 #endif
 	} else {
+	    if (h == fheap && h != heaps) {
+		/*
+		 * When deallocating the last arena with free space,
+		 * loop back through the list to find another one.
+		 */
+		fheap = NULL;
+		hn = heaps;
+		continue;
+	    }
 #ifdef USE_MMAP
 	    munmap((void *) h, h->size);
 #else