From 5d11e8e805d7043152c300930e6fb41c2244443b Mon Sep 17 00:00:00 2001
From: leileizhang <leilzh@microsoft.com>
Date: Wed, 25 Feb 2026 13:54:46 +0800
Subject: [PATCH] [SFI] Fix libFuzzer failing to resolve target class name in
 Hosts module fuzz tests (#45784)

<!-- Enter a brief description/summary of your PR here. What does it
fix/what does it change/how was it tested (even manually, if necessary)?
-->
## Summary of the Pull Request
In PR
https://github.com/microsoft/PowerToys/pull/40754/changes#diff-458c2dd654182dce7f6ad70fadd40d048a99f9be2cd9506747dde5964e6f396a
the config class name was changed incorrectly, which caused libFuzzer to
fail to resolve the target type HostsEditor.FuzzTests.FuzzTests and
resulted in test failures.

<img width="2074" height="311" alt="image"
src="https://github.com/user-attachments/assets/8a8d4ce8-71e7-45d6-ae7e-da43da6c63ca"
/>


This change updates the class name to the correct value to fix the
issue.

<img width="2098" height="647" alt="image"
src="https://github.com/user-attachments/assets/2715dade-63e1-4cdb-856a-8f199ffcd38a"
/>

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## PR Checklist

- [ ] Closes: #xxx
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issues) -->
- [ ] **Communication:** I've discussed this with core contributors
already. If the work hasn't been agreed, this work might be rejected
- [ ] **Tests:** Added/updated and all pass
- [ ] **Localization:** All end-user-facing strings can be localized
- [ ] **Dev docs:** Added/updated
- [ ] **New binaries:** Added on the required places
- [ ] [JSON for
signing](https://github.com/microsoft/PowerToys/blob/main/.pipelines/ESRPSigning_core.json)
for new binaries
- [ ] [WXS for
installer](https://github.com/microsoft/PowerToys/blob/main/installer/PowerToysSetup/Product.wxs)
for new binaries and localization folder
- [ ] [YML for CI
pipeline](https://github.com/microsoft/PowerToys/blob/main/.pipelines/ci/templates/build-powertoys-steps.yml)
for new test projects
- [ ] [YML for signed
pipeline](https://github.com/microsoft/PowerToys/blob/main/.pipelines/release.yml)
- [ ] **Documentation updated:** If checked, please file a pull request
on [our docs
repo](https://github.com/MicrosoftDocs/windows-uwp/tree/docs/hub/powertoys)
and link it here: #xxx

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or any additional comments/features here -->
## Detailed Description of the Pull Request / Additional comments

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wherever possible, but list manual validation steps taken as well -->
## Validation Steps Performed
---
 src/modules/Hosts/Hosts.FuzzTests/OneFuzzConfig.json | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/src/modules/Hosts/Hosts.FuzzTests/OneFuzzConfig.json b/src/modules/Hosts/Hosts.FuzzTests/OneFuzzConfig.json
index 6a5b9883f1..126eec2334 100644
--- a/src/modules/Hosts/Hosts.FuzzTests/OneFuzzConfig.json
+++ b/src/modules/Hosts/Hosts.FuzzTests/OneFuzzConfig.json
@@ -5,7 +5,7 @@
       "fuzzer": {
         "$type": "libfuzzerDotNet",
         "dll": "HostsEditor.FuzzTests.dll",
-        "class": "HostsEditor.FuzzTests.FuzzTests",
+        "class": "Hosts.FuzzTests.FuzzTests",
         "method": "FuzzValidIPv4",
         "FuzzingTargetBinaries": [
           "PowerToys.Hosts.dll"
@@ -46,7 +46,7 @@
       "fuzzer": {
         "$type": "libfuzzerDotNet",
         "dll": "HostsEditor.FuzzTests.dll",
-        "class": "HostsEditor.FuzzTests.FuzzTests",
+        "class": "Hosts.FuzzTests.FuzzTests",
         "method": "FuzzValidIPv6",
         "FuzzingTargetBinaries": [
           "PowerToys.Hosts.dll"
@@ -87,7 +87,7 @@
       "fuzzer": {
         "$type": "libfuzzerDotNet",
         "dll": "HostsEditor.FuzzTests.dll",
-        "class": "HostsEditor.FuzzTests.FuzzTests",
+        "class": "Hosts.FuzzTests.FuzzTests",
         "method": "FuzzValidHosts",
         "FuzzingTargetBinaries": [
           "PowerToys.Hosts.dll"
@@ -128,7 +128,7 @@
       "fuzzer": {
         "$type": "libfuzzerDotNet",
         "dll": "HostsEditor.FuzzTests.dll",
-        "class": "HostsEditor.FuzzTests.FuzzTests",
+        "class": "Hosts.FuzzTests.FuzzTests",
         "method": "FuzzWriteAsync",
         "FuzzingTargetBinaries": [
           "PowerToys.Hosts.dll"