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-rw-r--r--src/library_memfs.js2
1 files changed, 2 insertions, 0 deletions
diff --git a/src/library_memfs.js b/src/library_memfs.js
index 588bbabd..9f528108 100644
--- a/src/library_memfs.js
+++ b/src/library_memfs.js
@@ -222,7 +222,9 @@ mergeInto(LibraryManager.library, {
#if USE_TYPED_ARRAYS == 2
if (length && contents.length === 0 && position === 0 && buffer.subarray) {
// just replace it with the new data
+#if ASSERTIONS
assert(buffer.length);
+#endif
if (canOwn && buffer.buffer === HEAP8.buffer && offset === 0) {
node.contents = buffer; // this is a subarray of the heap, and we can own it
node.contentMode = MEMFS.CONTENT_OWNING;