From 1a58491066c80bd4b599e49fe0930b9390807e0b Mon Sep 17 00:00:00 2001
From: Howard Hinnant <hhinnant@apple.com>
Date: Tue, 31 Jan 2012 01:51:15 +0000
Subject: Minor bug fix in __cxa_call_unexpected.  Changed std::terminate to
 detect a caught-but-unhandled exception, and choose the handler out of that
 if found.

git-svn-id: https://llvm.org/svn/llvm-project/libcxxabi/trunk@149329 91177308-0d34-0410-b5e6-96231b3b80d8
---
 src/cxa_handlers.cpp | 19 +++++++++++++++++++
 1 file changed, 19 insertions(+)

(limited to 'src/cxa_handlers.cpp')

diff --git a/src/cxa_handlers.cpp b/src/cxa_handlers.cpp
index 98f7c25..93cc269 100644
--- a/src/cxa_handlers.cpp
+++ b/src/cxa_handlers.cpp
@@ -150,6 +150,25 @@ __attribute__((noreturn))
 void
 terminate() _NOEXCEPT
 {
+    // If there might be an uncaught exception
+    using namespace __cxxabiv1;
+    __cxa_eh_globals* globals = __cxa_get_globals_fast();
+    if (globals)
+    {
+        __cxa_exception* exception_header = globals->caughtExceptions;
+        if (exception_header)
+        {
+            _Unwind_Exception* unwind_exception =
+                reinterpret_cast<_Unwind_Exception*>(exception_header + 1) - 1;
+            bool native_exception = (unwind_exception->exception_class & get_language) ==
+                                                   (kOurExceptionClass & get_language);
+            if (native_exception)
+            {
+                __cxa_exception* exception_header = (__cxa_exception*)(unwind_exception+1) - 1;
+                __terminate(exception_header->terminateHandler);
+            }
+        }
+    }
     __terminate(get_terminate());
 }
 
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