From 58b74e481b47131c6633eef6b651d77bd12e3724 Mon Sep 17 00:00:00 2001
From: tqchen <tianqi.tchen@gmail.com>
Date: Tue, 15 Jul 2025 16:58:42 -0400
Subject: [PATCH] [FFI] Log and throw in function dup registration

This PR changes the function global dup registration to log and throw
so we have clear error message about the function duplication.
---
 ffi/src/ffi/function.cc | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/ffi/src/ffi/function.cc b/ffi/src/ffi/function.cc
index 3db651fe11fd..a2d3fb9db353 100644
--- a/ffi/src/ffi/function.cc
+++ b/ffi/src/ffi/function.cc
@@ -92,7 +92,10 @@ class GlobalFunctionTable {
     String name(method_info->name.data, method_info->name.size);
     if (table_.count(name)) {
       if (!can_override) {
-        TVM_FFI_THROW(RuntimeError) << "Global Function `" << name << "` is already registered";
+        TVM_FFI_LOG_AND_THROW(RuntimeError)
+            << "Global Function `" << name << "` is already registered, possible causes:\n"
+            << "- Two GlobalDef().def registrations for the same function \n"
+            << "Please remove the duplicate registration.";
       }
     }
     table_.Set(name, ObjectRef(make_object<Entry>(method_info)));