```swift
public static func instance(by queryItem: [String: String]) -> Self? {
let items = queryItem.map({ ($0.key.lowercased(), $0.value) })
let dict = [String: String](uniqueKeysWithValues: items)
var _url: String?
if let value = dict["url"] {
_url = value
}
var title: String?
if let value = dict["title"] {
title = value
}
guard
let url = _url
else { return nil }
return PRWebview(
url: url,
title: title
)
}
```
When I archive the iOS project, will faild with error: Segmentation fault: 11
```
1. While running pass #153921 SILFunctionTransform "DCE" on SILFunction "@$s23URLNavigatorExt_Example6RouterO9PRWebviewV8instance2byAESgSDyS2SG_tFZ".
for 'instance(by:)' (at /Users/phil/Documents/WorkSpace/ky_tech/URLNavigatorExt/Example/URLNavigatorExt/generated/Router.generated.swift:989:20)
0 swift 0x0000000104fdea63 PrintStackTraceSignalHandler(void*) + 51
1 swift 0x0000000104fde236 SignalHandler(int) + 358
2 libsystem_platform.dylib 0x00007fff5b7bfb5d _sigtramp + 29
3 libsystem_platform.dylib 0x0000000106644e00 _sigtramp + 2867352256
4 swift 0x000000010134c370 (anonymous namespace)::DCE::markControllingTerminatorsLive(swift::SILBasicBlock*) + 800
5 swift 0x000000010134bca2 (anonymous namespace)::DCE::markValueLive(swift::SILNode*) + 466
6 swift 0x00000001013495e8 (anonymous namespace)::DCE::run() + 2728
7 swift 0x00000001012d0f3e swift::SILPassManager::execute() + 4606
8 swift 0x0000000100f2f96b swift::CompilerInstance::performSILProcessing(swift::SILModule*, swift::UnifiedStatsReporter*) + 6379
9 swift 0x0000000100c27ec5 performCompile(swift::CompilerInstance&, swift::CompilerInvocation&, llvm::ArrayRef<char const*>, int&, swift::FrontendObserver*, swift::UnifiedStatsReporter*) + 33925
10 swift 0x0000000100c1c234 swift::performFrontend(llvm::ArrayRef<char const*>, char const*, void*, swift::FrontendObserver*) + 6820
11 swift 0x0000000100ba9733 main + 1219
12 libdyld.dylib 0x00007fff5b5d43d5 start + 1
13 libdyld.dylib 0x0000000000000056 start + 2762128514
error: Segmentation fault: 11 (in target 'URLNavigatorExt_Example' from project 'URLNavigatorExt')
```
If I change the code
```swift
var _url: String?
if let value = dict["url"] {
_url = value
}
// to
var _url: String? = dict["url"]
```
This archive will be successful
I create a demo project
https://github.com/philCc/URLNavigatorExt.git
branch:Segmentation_fault_11
