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Throw an error for an empty array (#349)

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Throw an error for an empty array before accessing the first element.
This commit is contained in:
Dmitry Kovba
2025-10-24 11:19:25 -07:00
committed by GitHub
parent ca657f5009
commit a405d88e6d
1 changed files with 6 additions and 2 deletions
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vminitd/Sources/vmexec/vmexec.swift
+6 -2
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@@ -73,6 +73,10 @@ extension App {
}
static func exec(process: ContainerizationOCI.Process, currentEnv: [String]? = nil) throws {
guard !process.args.isEmpty else {
throw App.Errno(stage: "exec", info: "process args cannot be empty")
}
// lookup executable
let path = Path.findPath(currentEnv) ?? Path.getCurrentPath()
guard let resolvedExecutable = Path.lookPath(process.args[0], path: path) else {
@@ -88,11 +92,11 @@ extension App {
// switch cwd
guard chdir(cwd) == 0 else {
throw App.Errno(stage: "chdir(cwd)", info: "Failed to change directory to '\(cwd)'")
throw App.Errno(stage: "chdir(cwd)", info: "failed to change directory to '\(cwd)'")
}
guard execvpe(executable, argv, env) != -1 else {
throw App.Errno(stage: "execvpe(\(String(describing: executable)))", info: "Failed to exec [\(process.args.joined(separator: " "))]")
throw App.Errno(stage: "execvpe(\(String(describing: executable)))", info: "failed to exec [\(process.args.joined(separator: " "))]")
}
fatalError("execvpe failed")
}