Fix - correctly handle empty std::map

Seems to be, no extra information written into the buffer when map is empty
root-project · Aug 2, 2024 · 64f4bb7 · 64f4bb7
1 parent bad7680
commit 64f4bb7
Showing 1 changed file with 5 additions and 0 deletions.
diff --git a/modules/io.mjs b/modules/io.mjs
@@ -3549,6 +3549,11 @@ function readMapElement(buf) {
    }
 
    const n = buf.ntoi4(), res = new Array(n);
+
+   // no extra data written for empty map
+   if (n === 0)
+      return res;
+
    if (this.member_wise && (buf.remain() >= 6)) {
       if (buf.ntoi2() === kStreamedMemberWise)
          buf.shift(4); // skip checksum