Fix __libcpp_verbose_abort signature for Xcode 16

Author: AustinBenoit

testing/sample_framework/src/app_framework.cc

@@ -27,14 +27,23 @@
 #include <ctime>
 
 #if defined(__APPLE__)
+#include <TargetConditionals.h>
 // Workaround for Xcode 15 / Swift 5.10 Concurrency and C++ verbose abort
 // crash on older iOS versions (iOS 15/16).
 // By providing these symbols in our own binary, we prevent dyld from
 // crashing when they are missing from the system libraries on older OSs.
+
+// In Xcode 16, libc++ removed the noexcept specifier from __libcpp_verbose_abort.
+#if defined(__apple_build_version__) && __apple_build_version__ >= 16000000 && __apple_build_version__ < 20000000
+  #define FIREBASE_LIBCPP_VERBOSE_ABORT_NOEXCEPT
+#else
+  #define FIREBASE_LIBCPP_VERBOSE_ABORT_NOEXCEPT noexcept
+#endif
+
 namespace std {
 inline namespace __1 {
 __attribute__((weak)) void __libcpp_verbose_abort(const char* format,
-                                                  ...) noexcept {
+                                                  ...) FIREBASE_LIBCPP_VERBOSE_ABORT_NOEXCEPT {
   va_list list;
   va_start(list, format);
   vfprintf(stderr, format, list);