From 87e9d1920c31eba954ba755c940687a0fe7f1bfe Mon Sep 17 00:00:00 2001
From: John Turner <jturner.usa@gmail.com>
Date: Sun, 14 Dec 2025 02:53:49 +0000
Subject: [PATCH] allow fuzzer disagreements where there are duplicated usedeps
 in the atom

Portage rejects atoms with duplicated usedeps that are otherwise
valid, gentoo-utils accepts these as valid however. So we will not
panic on cases of disagreement where the control side fails and we
detect duplicated usedeps.
---
 fuzz/atom/parser/fuzz.rs | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/fuzz/atom/parser/fuzz.rs b/fuzz/atom/parser/fuzz.rs
index 2acc1e9..83d5787 100644
--- a/fuzz/atom/parser/fuzz.rs
+++ b/fuzz/atom/parser/fuzz.rs
@@ -56,6 +56,16 @@ pub unsafe extern "C" fn LLVMFuzzerTestOneInput(input: *const u8, len: usize) ->
         (Ok(_), Err(rest)) => {
             panic!("disagreement on {str}\ncontrol:Ok\ngentoo-utils:Err({rest})");
         }
+        (Err(_), Ok(atom))
+            if atom
+                .usedeps()
+                .iter()
+                .any(|usedep| atom.usedeps().iter().filter(|u| usedep == *u).count() > 1) =>
+        {
+            eprintln!(
+                "disagreement, but we will allow it since its probably because of duplicated usdeps"
+            );
+        }
         (Err(_), Ok(_)) => {
             panic!("disagreement on {str}\ncontrol:Err\ngentoo-utils:Ok")
         }