From e4b2f3054a77ec28d501e269affbac6cfdfda35c Mon Sep 17 00:00:00 2001
From: Sam Clegg <sbc@chromium.org>
Date: Tue, 31 Aug 2021 07:04:31 -0400
Subject: [WebAssembly][libObject] Avoid re-use of Section object during
 parsing

The re-use of this struct across iterations of the loop was causing
fields (specifically Name) to be incorrectly shared between multiple
sections.

Differential Revision: https://reviews.llvm.org/D108984
---
 llvm/lib/Object/WasmObjectFile.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'llvm/lib/Object/WasmObjectFile.cpp')

diff --git a/llvm/lib/Object/WasmObjectFile.cpp b/llvm/lib/Object/WasmObjectFile.cpp
index a08c648..9a4e246 100644
--- a/llvm/lib/Object/WasmObjectFile.cpp
+++ b/llvm/lib/Object/WasmObjectFile.cpp
@@ -286,9 +286,9 @@ WasmObjectFile::WasmObjectFile(MemoryBufferRef Buffer, Error &Err)
     return;
   }
 
-  WasmSection Sec;
   WasmSectionOrderChecker Checker;
   while (Ctx.Ptr < Ctx.End) {
+    WasmSection Sec;
     if ((Err = readSection(Sec, Ctx, Checker)))
       return;
     if ((Err = parseSection(Sec)))
-- 
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