From d085187c5e590112ff5d090833014e6ccef12f83 Mon Sep 17 00:00:00 2001
From: Robbin Ehn <rehn@rivosinc.com>
Date: Wed, 20 Mar 2024 17:57:10 +0100
Subject: [PATCH] add logging

---
 src/hotspot/os/posix/os_posix.cpp | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/src/hotspot/os/posix/os_posix.cpp b/src/hotspot/os/posix/os_posix.cpp
index 39a6779b3fc04..8129713720d50 100644
--- a/src/hotspot/os/posix/os_posix.cpp
+++ b/src/hotspot/os/posix/os_posix.cpp
@@ -711,7 +711,12 @@ void* os::get_default_process_handle() {
 }
 
 void* os::dll_lookup(void* handle, const char* name) {
-  return dlsym(handle, name);
+  void* ret = dlsym(handle, name);
+  if (ret == NULL) {
+    const char* tmp = dlerror();
+    log_debug(os)("Symbol %s not found in dll: %s", name, tmp);
+  }
+  return ret;
 }
 
 void os::dll_unload(void *lib) {