commit 03a10740898eeb2b0c7a7c6bea3e293a221309a1
author Martin Storsjo <martin@martin.st> Tue Dec 11 09:53:11 2018 +0000
committer Martin Storsjo <martin@martin.st> Tue Dec 11 09:53:11 2018 +0000
tree ba6cfd39934162f83d9b8dd76d98d26eca8eab20
parent 0731f1a06eb8d6f1d6ab258e8019b49d2dff8af3

[SEH] Zero-initialize EXCEPTION_RECORD and UNWIND_HISTORY_TABLE before calling RtlUnwindEx

This fixes PR39935.

git-svn-id: https://llvm.org/svn/llvm-project/libunwind/trunk@348836 91177308-0d34-0410-b5e6-96231b3b80d8

src/Unwind-seh.cpp

diff --git a/src/Unwind-seh.cpp b/src/Unwind-seh.cpp
index 73616a8..73a950a 100644
--- a/src/Unwind-seh.cpp
+++ b/src/Unwind-seh.cpp
@@ -374,6 +374,8 @@
     CONTEXT ms_ctx;
     UNWIND_HISTORY_TABLE hist;
 
+    memset(&ms_exc, 0, sizeof(ms_exc));
+    memset(&hist, 0, sizeof(hist));
     ms_exc.ExceptionCode = STATUS_GCC_THROW;
     ms_exc.ExceptionFlags = EXCEPTION_NONCONTINUABLE;
     ms_exc.NumberParameters = 4;