[PATCH 0/1] MR5974: ucrtbase: Store exception record in ExceptionInformation[6] during unwinding.

[Piotr Caban (＠piotr)]

-- 
https://gitlab.winehq.org/wine/wine/-/merge_requests/5974

[PATCH 1/1] ucrtbase: Store exception record in ExceptionInformation[6] during unwinding.

[Piotr Caban]

From: Piotr Caban <piotr(a)codeweavers.com>

---
 dlls/msvcrt/except.c | 9 +++++----
 1 file changed, 5 insertions(+), 4 deletions(-)

diff --git a/dlls/msvcrt/except.c b/dlls/msvcrt/except.c
index 374357ed096..50f131efdc7 100644
--- a/dlls/msvcrt/except.c
+++ b/dlls/msvcrt/except.c
@@ -211,8 +211,8 @@ static void* WINAPI call_catch_block(EXCEPTION_RECORD *rec)
 {
     ULONG_PTR frame = rec->ExceptionInformation[1];
     const cxx_function_descr *descr = (void*)rec->ExceptionInformation[2];
-    EXCEPTION_RECORD *prev_rec = (void*)rec->ExceptionInformation[4];
-    EXCEPTION_RECORD *untrans_rec = (void*)rec->ExceptionInformation[6];
+    EXCEPTION_RECORD *untrans_rec = (void*)rec->ExceptionInformation[4];
+    EXCEPTION_RECORD *prev_rec = (void*)rec->ExceptionInformation[6];
     CONTEXT *context = (void*)rec->ExceptionInformation[7];
     int *unwind_help = (int *)(frame + descr->unwind_help);
     EXCEPTION_POINTERS ep = { prev_rec, context };
@@ -323,9 +323,10 @@ static inline void find_catch_block(EXCEPTION_RECORD *rec, CONTEXT *context,
         catch_record.ExceptionInformation[1] = orig_frame;
         catch_record.ExceptionInformation[2] = (ULONG_PTR)descr;
         catch_record.ExceptionInformation[3] = tryblock->start_level;
-        catch_record.ExceptionInformation[4] = (ULONG_PTR)rec;
+        catch_record.ExceptionInformation[4] = (ULONG_PTR)untrans_rec;
         catch_record.ExceptionInformation[5] = (ULONG_PTR)handler;
-        catch_record.ExceptionInformation[6] = (ULONG_PTR)untrans_rec;
+        /* tyFlow expects ExceptionInformation[6] to contain exception record */
+        catch_record.ExceptionInformation[6] = (ULONG_PTR)rec;
         catch_record.ExceptionInformation[7] = (ULONG_PTR)context;
         catch_record.ExceptionInformation[10] = -1;
         RtlUnwindEx((void*)frame, (void*)dispatch->ControlPc, &catch_record, NULL, &ctx, NULL);
-- 
GitLab

https://gitlab.winehq.org/wine/wine/-/merge_requests/5974