From bf7e40f9bb3325b3f194de96a2b8602f2e5ca52c Mon Sep 17 00:00:00 2001
From: Sam Clegg <sbc@chromium.org>
Date: Mon, 23 Sep 2019 17:06:01 -0700
Subject: wasm-emscripten-finalize: Add more checking of __data_end global
 (#2352)

---
 src/tools/wasm-emscripten-finalize.cpp | 3 +++
 1 file changed, 3 insertions(+)

(limited to 'src')

diff --git a/src/tools/wasm-emscripten-finalize.cpp b/src/tools/wasm-emscripten-finalize.cpp
index 8a246e5d2..75744a822 100644
--- a/src/tools/wasm-emscripten-finalize.cpp
+++ b/src/tools/wasm-emscripten-finalize.cpp
@@ -197,6 +197,9 @@ int main(int argc, const char* argv[]) {
     if (dataEnd->type != Type::i32) {
       Fatal() << "__data_end global has wrong type";
     }
+    if (dataEnd->imported()) {
+      Fatal() << "__data_end must not be an imported global";
+    }
     Const* dataEndConst = dataEnd->init->cast<Const>();
     dataSize = dataEndConst->value.geti32() - globalBase;
   }
-- 
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