From 125e2ad5d82f129ce23a98deb33504eb6200afb4 Mon Sep 17 00:00:00 2001
From: Vftdan <vftdan@gmail.com>
Date: Mon, 19 Aug 2024 21:14:06 +0200
Subject: [PATCH] Don't make zero-sized allocations when cloning modifier sets

---
 modifiers.h | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/modifiers.h b/modifiers.h
index a26868a..df42cdc 100644
--- a/modifiers.h
+++ b/modifiers.h
@@ -23,6 +23,9 @@ typedef enum {
 __attribute__((unused)) inline static ModifierSet
 modifier_set_copy(const ModifierSet old)
 {
+	if (!old.byte_length) {
+		return EMPTY_MODIFIER_SET;
+	};
 	ModifierSet result = old;
 	result.bits = malloc(result.byte_length);
 	if (!result.bits) {