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fix(native): catch C++ exceptions at the HarmonyOS NAPI and iOS entry points - #674
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… points CODE_AUDIT 4.4: Android already turns a C++ exception from the shared cores (std::bad_alloc, std::length_error) into a Java exception at every JNI entry. HarmonyOS let it unwind into NAPI, and iOS only caught NSException, which a C++ exception passes straight through. Moving the round driver into C++ widens that surface, so close it first. HarmonyOS: every exported callback runs through Guarded<>, which throws a JS Error instead; async work catches on the worker thread and rejects the promise with the exception's message, and a throwing settle rejects too. iOS: the entry points (RN methods, +bundleURL, the host configure / prepareBundle API, the download, unzip, digest and cleanup GCD blocks, the unzip guard's delegate callbacks, crash hold and the round dispatch) catch `...` instead of NSException, with the reason from PushyCaughtReason. A launch whose state cannot be resolved now falls back to the packaged bundle and still schedules the native round. A download that throws after it registered settles every waiter through its completion. The purge-restore harness gains cpp_exception_boundary: the reason of each exception kind, the guard, the bundleURL fallback, and the state lock released after a throw. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
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| Check name | Status | Explanation | Resolution |
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| Docstring Coverage |  |
Docstring coverage is 42.86% which is insufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff. Analyzed 7 functions across 3 files. (1 skipped: 1… | Write docstrings for the functions missing them to satisfy the coverage threshold. |
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Check name Status Explanation Description Check Check skipped - CodeRabbit’s high-level summary is enabled. Title check The title clearly and concisely describes the main change: catching C++ exceptions at HarmonyOS NAPI and iOS native entry points. Linked Issues check Check skipped because no linked issues were found for this pull request. Out of Scope Changes check Check skipped because no linked issues were found for this pull request.
Full details: Docstring Coverage
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Docstring coverage is 42.86% which is insufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff. Analyzed 7 functions across 3 files. (1 skipped: 1 unsupported.)
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Inline comments:
Review comments at @ios/RCTPushy/RCTPushyInstaller.mm:
- Around line 355-356: Update the catch path after PushyRegisterDownload
succeeds so exceptions from fetchUnguarded: are passed to completion rather than
only callback; this ensures PushyFinishDownload removes the registry entry and
settles all joined callers.
- Around line 457-459: Guard the `progressHandler` body around
`PushyReportDownloadProgress` with exception handling at callback execution
time, since the surrounding installer `@try` has already ended. On failure, use
the existing download failure path and ensure the download is settled exactly
once.
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📒 Files selected for processing: 10
CODE_AUDIT.mdharmony/pushy/src/main/cpp/pushy.cppios/RCTPushy/RCTPushy.mmios/RCTPushy/RCTPushyConfiguration.mmios/RCTPushy/RCTPushyInstaller.mmios/RCTPushy/RCTPushyInternal.hios/RCTPushy/RCTPushyOrchestrator.mmios/RCTPushy/RCTPushyState.mmscripts/tests/ios-purge-restore/extract.pyscripts/tests/ios-purge-restore/purge_restore_test.mm
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…tion Everything after PushyRegisterDownload now sits inside the try that settles through completion (the side-effect-free setup moved above the registration), so a throw there cannot leave the registry entry and joined waiters behind. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
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RoundEngine 系列的第 2 步：补 CODE_AUDIT 4.4。共享内核（std::bad_alloc、std::length_error）抛出的 C++ 异常不能越过平台边界。Android 早已兜住，但鸿蒙会让异常 unwind 进 NAPI，iOS 只 catch
NSException，C++ 异常会直接穿过。轮次引擎上移到 C++ 会扩大这个面，所以先把它补上。鸿蒙（
pushy.cpp）Guarded<>，C++ 异常转成 JS Error 抛出。aarch64-linux-ohos，-std=c++17 -DNDEBUG）编译通过，无告警。iOS
@catch (...)能接住 C++ 异常，而@catch (NSException *)接不住。各入口改为@catch (...)，异常原因统一由新增的PushyCaughtReason取出（C++ 取what()，NSException 取reason）。另有PushyGuard，用于没有上报对象的 GCD 块。switchVersion）、下载入口fetchconstantsToExport+bundleURL及其中的轮次调度RCTPushyNormalizeConfiguration）+bundleURL解析状态时如果抛出异常（包括 NSException），改为回退内置包，并照常调度原生轮次。以前异常会传给宿主，每次启动都会以同样方式崩溃。验证
scripts/test-ios-purge-restore.sh新增用例cpp_exception_boundary，覆盖：三类异常的原因提取、Guard 的行为、状态读取抛错时 bundleURL 回退内置包并仍调度轮次、抛错后状态锁已释放。负向对照：删掉 bundleURL 的@catch (...)后该用例 abort。Example/e2etest的 Pods 头文件对改动的 5 个.mm做-fsyntax-only（iOS 模拟器 SDK，C++20），全部通过。bun run lint、bun test（438 个）均通过。CODE_AUDIT 4.4 只剩一项：确认
Application.mk里的-fno-unwind-tables与-fexceptions同时使用时能正常 unwind。🤖 Generated with Claude Code
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