diff --git a/src/vim9execute.c b/src/vim9execute.c
index f237132..8262822 100644
--- a/src/vim9execute.c
+++ b/src/vim9execute.c
@@ -559,6 +559,12 @@
 				     arg_to_add + STACK_FRAME_SIZE + varcount))
 	return FAIL;
 
+    // The object pointer is in the execution typval stack.  The GA_GROW call
+    // above may have reallocated the execution typval stack.  So the object
+    // pointer may not be valid anymore.  Get the object pointer again from the
+    // execution stack.
+    obj = STACK_TV_BOT(0) - argcount - vararg_count - 1;
+
     // If depth of calling is getting too high, don't execute the function.
     if (funcdepth_increment() == FAIL)
 	return FAIL;