fix: missing initializers and incorrect default for native_pen_touch

[cgutman]

Description

We keep forgetting to update config_t when we add new config options, which causes bugs like #5520. Fix this and all other missing initializers and enable -Wmissing-field-initializers to stop these issues from getting introduced again in the future.

The only behavior change in this PR is adding key_rightalt_to_key_win which fixes #5520. All others are either default initialized already or values that are never read.

Screenshot

Issues Fixed or Closed

• Fixes [Bug] Touch/pen input disabled when native_pen_touch omitted from config (v2026.808 regression) #5520
• Closes fix(input): add missing default value for key_rightalt_to_key_win #5519

Roadmap Issues

Type of Change

• feat: New feature (non-breaking change which adds functionality)
• fix: Bug fix (non-breaking change which fixes an issue)
• docs: Documentation only changes
• style: Changes that do not affect the meaning of the code (white-space, formatting, missing semicolons, etc.)
• refactor: Code change that neither fixes a bug nor adds a feature
• perf: Code change that improves performance
• test: Adding missing tests or correcting existing tests
• build: Changes that affect the build system or external dependencies
• ci: Changes to CI configuration files and scripts
• chore: Other changes that don't modify src or test files
• revert: Reverts a previous commit
• BREAKING CHANGE: Introduces a breaking change (can be combined with any type above)

Checklist

• Code follows the style guidelines of this project
• Code has been self-reviewed
• Code has been commented, particularly in hard-to-understand areas
• Code docstring/documentation-blocks for new or existing methods/components have been added or updated
• Unit tests have been added or updated for any new or modified functionality

AI Usage

See our AI usage policy.

• None: No AI tools were used in creating this PR
• Light: AI provided minor assistance (formatting, simple suggestions)
• Moderate: AI helped with code generation or debugging specific parts
• Heavy: AI generated most or all of the code changes

[codecov]

Bundle Report

Bundle size has no change ✅

[ReenigneArcher]

Awesome, thanks for this!

Looks like it might be different for clang? https://github.com/LizardByte/Sunshine/actions/runs/34655808950/job/103447879614?pr=5693#step:11:4294

[codecov]

Codecov Report

❌ Patch coverage is 29.12621% with 73 lines in your changes missing coverage. Please review.
✅ Project coverage is 37.66%. Comparing base (0f7dcf3) to head (003cc0a).
⚠️ Report is 1 commits behind head on master.
✅ All tests successful. No failed tests found.

Files with missing lines	Patch %	Lines
src/platform/linux/vulkan_encode.cpp	0.00%	34 Missing ⚠️
src/platform/linux/portalgrab.cpp	8.33%	11 Missing ⚠️
src/platform/linux/graphics.cpp	0.00%	8 Missing ⚠️
src/input.cpp	14.28%	6 Missing ⚠️
src/platform/linux/kmsgrab.cpp	0.00%	6 Missing ⚠️
src/platform/linux/cuda.cpp	0.00%	3 Missing ⚠️
src/platform/linux/vaapi.cpp	0.00%	3 Missing ⚠️
src/video.cpp	92.59%	2 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #5693      +/-   ##
==========================================
+ Coverage   37.53%   37.66%   +0.12%     
==========================================
  Files         102      104       +2     
  Lines       25478    26094     +616     
  Branches    11294    11559     +265     
==========================================
+ Hits         9562     9827     +265     
- Misses      14953    14990      +37     
- Partials      963     1277     +314     

Flag	Coverage Δ
Alpine-aarch64	22.57% <9.52%> (-0.01%)	⬇️
Alpine-x86_64	22.69% <9.52%> (-0.01%)	⬇️
Archlinux	21.27% <8.06%> (-0.01%)	⬇️
FreeBSD-amd64	23.47% <23.80%> (+<0.01%)	⬆️
Homebrew-macos-15	37.27% <42.85%> (-0.02%)	⬇️
Homebrew-macos-26	37.58% <42.85%> (-0.01%)	⬇️
Homebrew-ubuntu-24.04	24.57% <10.60%> (-0.01%)	⬇️
Linux-AppImage-aarch64	25.85% <10.60%> (-0.01%)	⬇️
Linux-AppImage-x86_64	26.06% <10.60%> (-0.01%)	⬇️
Windows-AMD64	30.42% <85.71%> (+0.02%)	⬆️
Windows-ARM64	25.46% <85.71%> (?)
macOS-arm64	30.81% <60.00%> (-0.02%)	⬇️
macOS-x86_64	31.43% <60.00%> (-0.02%)	⬇️

Flags with carried forward coverage won't be shown. Click here to find out more.

Files with missing lines	Coverage Δ
src/config.cpp	60.95% <100.00%> (-0.27%)	⬇️
src/platform/common.h	61.19% <ø> (+0.29%)	⬆️
src/platform/linux/wayland.cpp	7.22% <ø> (ø)
src/platform/windows/display_base.cpp	36.80% <100.00%> (+1.04%)	⬆️
src/platform/windows/display_vram.cpp	10.23% <100.00%> (+1.56%)	⬆️
src/video.cpp	54.62% <92.59%> (-0.76%)	⬇️
src/platform/linux/cuda.cpp	1.70% <0.00%> (ø)
src/platform/linux/vaapi.cpp	2.58% <0.00%> (ø)
src/input.cpp	47.86% <14.28%> (-0.17%)	⬇️
src/platform/linux/kmsgrab.cpp	3.73% <0.00%> (ø)
... and 3 more

... and 50 files with indirect coverage changes

---

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[cgutman]

It looks like GCC doesn't have an equivalent of -Wno-missing-designated-field-initializers, so I just made the warning change for Clang 19+. Currently that means it's getting exercised on FreeBSD, Windows ARM64, and macOS 26.

Since the actual missing initializer bugs have been in shared code (config.cpp and video.cpp), this should still be enough to catch future issues.

[github-actions]

Last Updated	2026-09-12 14:25:55 UTC
Source Run	CI Run #5495
Commit	003cc0a4fc7dc8930eae8f24eb57fcba858b5dd8

Screenshot Comparison

PR #5693 screenshots vs screenshots baseline.

Matrix: AppImage-aarch64

Image	Baseline	PR
sunshine_tray_initial.png
sunshine_tray_menu.png
sunshine_tray_pairing_request.png
sunshine_tray_paused.png
sunshine_tray_stopped.png
sunshine_tray_streaming.png
sunshine_tray_tooltip.png

Matrix: AppImage-x86_64

Image	Baseline	PR
sunshine_tray_initial.png
sunshine_tray_menu.png
sunshine_tray_pairing_request.png
sunshine_tray_paused.png
sunshine_tray_stopped.png
sunshine_tray_streaming.png
sunshine_tray_tooltip.png

Matrix: Windows-AMD64

Image	Baseline	PR
sunshine_tray_initial.png
sunshine_tray_menu.png
sunshine_tray_pairing_request.png
sunshine_tray_paused.png
sunshine_tray_stopped.png
sunshine_tray_streaming.png
sunshine_tray_tooltip.png

Matrix: Windows-ARM64

Image	Baseline	PR
sunshine_tray_initial.png
sunshine_tray_menu.png
sunshine_tray_pairing_request.png
sunshine_tray_paused.png
sunshine_tray_stopped.png
sunshine_tray_streaming.png
sunshine_tray_tooltip.png

Matrix: macOS-arm64

Image	Baseline	PR
sunshine_tray_initial.png
sunshine_tray_menu.png
sunshine_tray_pairing_request.png
sunshine_tray_paused.png
sunshine_tray_stopped.png
sunshine_tray_streaming.png
sunshine_tray_tooltip.png

Matrix: macOS-x86_64

Image	Baseline	PR
sunshine_tray_initial.png
sunshine_tray_menu.png
sunshine_tray_pairing_request.png
sunshine_tray_paused.png
sunshine_tray_stopped.png
sunshine_tray_streaming.png
sunshine_tray_tooltip.png

[ReenigneArcher]

Apparently if we use -Wall -Wextra -Wpedantic with -Werror it will include this automatically (in the supported compilers).

[cgutman]

-Wextra and -Wpedantic includes a ton of other warnings that we probably don't want (or at least would need a ton more code changes to build cleanly).

[sonarqubecloud]

Quality Gate failed

Failed conditions
5.6% Duplication on New Code (required ≤ 2%)
6 Duplicated Blocks on New Code (required ≤ 0)

See analysis details on SonarQube Cloud

[ReenigneArcher]

-Wextra and -Wpedantic includes a ton of other warnings that we probably don't want (or at least would need a ton more code changes to build cleanly).

Okay, I can look into for the future. Don't want to derail this PR for sure.