3ca6e0c176
- emitObjcHarness: objc_getClass + sel_registerName + objc_msgSend routes fuzzer bytes through ObjC dispatch instead of raw dlopen - Swift fixture (tests/fixtures/swift/): 4 C-ABI functions, 1 ObjC-exposed class with 3 methods, Swift-mangled symbols - isSwiftMangled filter skips symbols needing object references - Budget floor 30→120s, ceiling 120→600s (AFL++/libFuzzer norms)
51 lines
1.2 KiB
Swift
51 lines
1.2 KiB
Swift
import Foundation
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// ── C-ABI exports (safe for dlopen fuzzing) ──
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@_cdecl("fuzz_c_add")
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public func fuzz_c_add(_ a: UInt64, _ b: UInt64) -> UInt64 {
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a &+ b
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}
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@_cdecl("fuzz_c_compare")
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public func fuzz_c_compare(_ a: UInt64, _ b: UInt64) -> Int32 {
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if a < b { return -1 }
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if a > b { return 1 }
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return 0
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}
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@_cdecl("fuzz_c_len")
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public func fuzz_c_len(_ ptr: UnsafePointer<CChar>?) -> UInt64 {
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guard let p = ptr else { return 0 }
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var count: UInt64 = 0
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while p[Int(count)] != 0 { count = count &+ 1 }
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return count
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}
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@_cdecl("fuzz_c_memcpy")
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public func fuzz_c_memcpy(_ dst: UnsafeMutablePointer<UInt8>?,
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_ src: UnsafePointer<UInt8>?,
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_ n: UInt64) -> UInt64 {
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guard let d = dst, let s = src else { return 0 }
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for i in 0..<min(n, 4096) {
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d[Int(i)] = s[Int(i)]
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}
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return n
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}
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// ── ObjC-exposed class (routable via objc_msgSend) ──
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@objc(FuzzMeClass)
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public class FuzzMeClass: NSObject {
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@objc public func add(_ a: Int, _ b: Int) -> Int {
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a &+ b
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}
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@objc public func isEven(_ n: Int) -> Bool {
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n % 2 == 0
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}
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@objc public func tokenize(_ input: String) -> [String] {
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input.components(separatedBy: " ")
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}
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}
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