Daniel Lehman : msvcrt: Call unwind handlers on intermediate frames during virtual unwind.

[Alexandre Julliard]

Module: wine
Branch: master
Commit: 5a10705f0c57142c6317bfab660d6270116c332c
URL:    http://source.winehq.org/git/wine.git/?a=commit;h=5a10705f0c57142c6317bfab66...

Author: Daniel Lehman <dlehman(a)esri.com>
Date:   Tue Aug  2 17:16:52 2016 -0700

msvcrt: Call unwind handlers on intermediate frames during virtual unwind.

Signed-off-by: Daniel Lehman <dlehman(a)esri.com>
Signed-off-by: Piotr Caban <piotr(a)codeweavers.com>
Signed-off-by: Alexandre Julliard <julliard(a)winehq.org>

---

 dlls/msvcrt/except_x86_64.c | 14 ++++++++++----
 1 file changed, 10 insertions(+), 4 deletions(-)

diff --git a/dlls/msvcrt/except_x86_64.c b/dlls/msvcrt/except_x86_64.c
index 3a90a66..80780ae 100644
--- a/dlls/msvcrt/except_x86_64.c
+++ b/dlls/msvcrt/except_x86_64.c
@@ -470,14 +470,20 @@ static DWORD cxx_frame_handler(EXCEPTION_RECORD *rec, ULONG64 frame,
         if (rec->ExceptionCode==STATUS_UNWIND_CONSOLIDATE && rec->NumberParameters==6 &&
                 rec->ExceptionInformation[0]==(ULONG_PTR)call_catch_block)
         {
-            ULONG64 orig_frame = rec->ExceptionInformation[1];
-            const cxx_function_descr *descr = (void*)rec->ExceptionInformation[2];
-            int end_level = rec->ExceptionInformation[3];
             EXCEPTION_RECORD *new_rec = (void*)rec->ExceptionInformation[4];
             thread_data_t *data = msvcrt_get_thread_data();
             frame_info *cur;
 
-            cxx_local_unwind(orig_frame, dispatch, descr, end_level);
+            if (rec->ExceptionFlags & EH_TARGET_UNWIND)
+            {
+                ULONG64 orig_frame = rec->ExceptionInformation[1];
+                const cxx_function_descr *orig_descr = (void*)rec->ExceptionInformation[2];
+                int end_level = rec->ExceptionInformation[3];
+
+                cxx_local_unwind(orig_frame, dispatch, orig_descr, end_level);
+            }
+            else
+                cxx_local_unwind(frame, dispatch, descr, -1);
 
             /* FIXME: we should only unregister frames registered by call_catch_block here */
             for (cur = data->frame_info_head; cur; cur = cur->next)