From 01fc82cbf25507f179bc88f9507dbf0da9252efc Mon Sep 17 00:00:00 2001
From: Michael Staneker <michael.staneker@ecmwf.int>
Date: Tue, 8 Oct 2024 15:40:44 +0200
Subject: [PATCH] Function inlining: early exit if arg 'functions' is provided
 but empty

---
 loki/transformations/inline.py | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/loki/transformations/inline.py b/loki/transformations/inline.py
index 96772de07..919dd9b22 100644
--- a/loki/transformations/inline.py
+++ b/loki/transformations/inline.py
@@ -409,6 +409,9 @@ class FindInlineCallsSkipInlineCallParameters(ExpressionFinder):
         """
         retriever = ExpressionRetrieverSkipInlineCallParameters(lambda e: isinstance(e, sym.InlineCall))
 
+    # functions are provided, however functions is empty, thus early exit
+    if functions is not None and not functions:
+        return False
     functions = as_tuple(functions)
 
     # Keep track of removed symbols