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ntdll: Pass a nonnull handler_data when continuing after a collided unwind on arm64. 

This fixes crashes when handling GNU/mingw style SEH based C++
exceptions on arm64; in these cases unwind_full_data ended up
where it tries to write handler_rva + 1 to *handler_data.

Signed-off-by: Martin Storsjo <martin@martin.st>
Signed-off-by: Alexandre Julliard <julliard@winehq.org>
This commit is contained in:
Martin Storsjo 2020-05-18 15:16:28 +03:00 committed by Alexandre Julliard
parent 93082b3d52
commit 93ecc54ae5
1 changed files with 4 additions and 2 deletions
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6
dlls/ntdll/signal_arm64.c
View File

@ -1843,7 +1843,8 @@ void WINAPI RtlUnwindEx( PVOID end_frame, PVOID target_ip, EXCEPTION_RECORD *rec
dispatch.ContextRecord = context;
RtlVirtualUnwind( UNW_FLAG_NHANDLER, dispatch.ImageBase,
dispatch.ControlPc, dispatch.FunctionEntry,
&new_context, NULL, &frame, NULL );
&new_context, &dispatch.HandlerData, &frame,
NULL );
rec->ExceptionFlags |= EH_COLLIDED_UNWIND;
goto unwind_done;
}
@ -1866,7 +1867,8 @@ void WINAPI RtlUnwindEx( PVOID end_frame, PVOID target_ip, EXCEPTION_RECORD *rec
dispatch.ContextRecord = context;
RtlVirtualUnwind( UNW_FLAG_NHANDLER, dispatch.ImageBase,
dispatch.ControlPc, dispatch.FunctionEntry,
&new_context, NULL, &frame, NULL );
&new_context, &dispatch.HandlerData,
&frame, NULL );
rec->ExceptionFlags |= EH_COLLIDED_UNWIND;
goto unwind_done;
}