1 files changed, 20 insertions, 0 deletions
diff --git a/test/grow_memory.cpp b/test/grow_memory.cpp
new file mode 100644
index 000000000..b8f732f7a
--- /dev/null
+++ b/test/grow_memory.cpp
@@ -0,0 +1,20 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <emscripten.h>
+
+volatile int writeOnly;
+
+int main() {
+  EM_ASM({
+    assert(HEAPU8.length === 16*1024*1024);
+  });
+  for (int i = 0; i < 20; i++) {
+    printf("alloc 1MB: %d\n", i);
+    writeOnly = (int)malloc(1024*1024);
+  }
+  EM_ASM({
+    assert(HEAPU8.length > 16*1024*1024);
+  });
+  printf("ok.\n");
+}
+