Use NSCAssert() in react_native_assert instead of C assert() (#36177)

Summary:
Pull Request resolved: #36177

react_native_assert calls C `assert()`, where XCode does not have a built-in breakpoint navigator to hook to assertion failures (though you can add a symbolic breakpoint to "abort()" to get the effect). This changes the Apple implemented of `react_native_assert()` to use `NSCAssert` under the hood. This is safe to use in C functions, but will be trapped by the default XCode exceptions breakpoint navigator.

Changelog:
[iOS][Fixed] - Use NSCAssert() in react_native_assert instead of C assert()

Reviewed By: cipolleschi

Differential Revision: D43275024

fbshipit-source-id: 43c4e4f1ae6b99f32634d4b1880bce712c3ae8f6

Author: NickGerleman

ReactCommon/React-Fabric.podspec

@@ -235,7 +235,8 @@ Pod::Spec.new do |s|
   s.subspec "debug_core" do |ss|
     ss.dependency             folly_dep_name, folly_version
     ss.compiler_flags       = folly_compiler_flags
-    ss.source_files         = "react/debug/**/*.{m,mm,cpp,h}"
+    ss.source_files         = "react/debug/*.h",
+                              "react/debug/ios/**/*.{m,mm,cpp,h}"
     ss.exclude_files        = "react/debug/tests"
     ss.header_dir           = "react/debug"
   end

ReactCommon/react/debug/BUCK

@@ -14,10 +14,6 @@ APPLE_COMPILER_FLAGS = get_apple_compiler_flags()
 
 rn_xplat_cxx_library(
     name = "debug",
-    srcs = glob(
-        ["**/*.cpp"],
-        exclude = glob(["tests/**/*.cpp"]),
-    ),
     headers = glob(
         ["**/*.h"],
         exclude = glob(["tests/**/*.h"]),
@@ -40,8 +36,10 @@ rn_xplat_cxx_library(
         # for android react_native_assert
         "-llog",
     ],
+    fbandroid_srcs = glob(["android/**/*.cpp"]),
     fbobjc_compiler_flags = APPLE_COMPILER_FLAGS,
     fbobjc_preprocessor_flags = get_preprocessor_flags_for_build_mode() + get_apple_inspector_flags(),
+    fbobjc_srcs = glob(["ios/**/*.mm"]),
     force_static = True,
     labels = [
         "pfh:ReactNative_CommonInfrastructurePlaceholder",

ReactCommon/react/debug/CMakeLists.txt

@@ -16,7 +16,7 @@ add_compile_options(
         -DLOG_TAG=\"Fabric\")
 
 
-file(GLOB react_debug_SRC CONFIGURE_DEPENDS *.cpp)
+file(GLOB react_debug_SRC CONFIGURE_DEPENDS android/*.cpp)
 add_library(react_debug SHARED ${react_debug_SRC})
 
 target_include_directories(react_debug PUBLIC ${REACT_COMMON_DIR})

ReactCommon/react/debug/react_native_assert.cpp renamed to ReactCommon/react/debug/android/react_native_assert.cpp

@@ -5,17 +5,10 @@
  * LICENSE file in the root directory of this source tree.
  */
 
-#ifdef __ANDROID__
-
 #include <android/log.h>
+#include <react/debug/react_native_assert.h>
 
-// Provide a prototype to silence missing prototype warning in release
-// mode.
-extern "C" void react_native_assert_fail(
-    const char *func,
-    const char *file,
-    int line,
-    const char *expr);
+#ifdef REACT_NATIVE_DEBUG
 
 extern "C" void react_native_assert_fail(
     const char *func,
@@ -42,4 +35,4 @@ extern "C" void react_native_assert_fail(
       expr);
 }
 
-#endif // __ANDROID__
+#endif

ReactCommon/react/debug/ios/react_native_assert.mm

@@ -0,0 +1,27 @@
+/*
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+#import <Foundation/NSException.h>
+#import <glog/logging.h>
+#import <react/debug/react_native_assert.h>
+
+#ifdef REACT_NATIVE_DEBUG
+
+extern "C" void react_native_assert_fail(const char *func, const char *file, int line, const char *expr)
+{
+  // flush logs because some might be lost on iOS if an assert is hit right after
+  // this. If you are trying to debug something actively and have added lots of
+  // LOG statements to track down an issue, there is race between flushing the
+  // final logs and stopping execution when the assert hits. Thus, if we know an
+  // assert will fail, we force flushing to happen right before the assert.
+  LOG(ERROR) << "react_native_assert failure: " << expr;
+  google::FlushLogFiles(google::GLOG_INFO /*min_severity*/);
+
+  NSCAssert(false, @"%s:%d: function %s: assertion failed (%s)", file, line, func, expr);
+}
+
+#endif

ReactCommon/react/debug/react_native_assert.h

@@ -28,9 +28,8 @@
 
 #else // REACT_NATIVE_DEBUG
 
-#ifdef __ANDROID__
-
-#include <android/log.h>
+#define react_native_assert(e) \
+  ((e) ? (void)0 : react_native_assert_fail(__func__, __FILE__, __LINE__, #e))
 
 #ifdef __cplusplus
 extern "C" {
@@ -44,27 +43,4 @@ void react_native_assert_fail(
 }
 #endif // __cpusplus
 
-#define react_native_assert(e) \
-  ((e) ? (void)0 : react_native_assert_fail(__func__, __FILE__, __LINE__, #e))
-
-#else // __ANDROID__
-
-#include <glog/logging.h>
-#include <cassert>
-
-// For all platforms, but iOS+Xcode especially: flush logs because some might be
-// lost on iOS if an assert is hit right after this. If you are trying to debug
-// something actively and have added lots of LOG statements to track down an
-// issue, there is race between flushing the final logs and stopping execution
-// when the assert hits. Thus, if we know an assert will fail, we force flushing
-// to happen right before the assert.
-#define react_native_assert(cond)                           \
-  if (!(cond)) {                                            \
-    LOG(ERROR) << "react_native_assert failure: " << #cond; \
-    google::FlushLogFiles(google::GLOG_INFO);               \
-    assert(cond);                                           \
-  }
-
-#endif // platforms besides __ANDROID__
-
 #endif // REACT_NATIVE_DEBUG