Merge pull request #1654 from AntelopeIO/no_nullptr_arith

do not perform arithmetic on `nullptr` inside WAVM serialization
AntelopeIO · Sep 19, 2023 · 01b128e · 01b128e
2 parents 9ae4492 + 0234a41
commit 01b128e
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/libraries/wasm-jit/Include/Inline/Serialization.h b/libraries/wasm-jit/Include/Inline/Serialization.h
@@ -35,7 +35,7 @@ namespace Serialization
 		// Advances the stream cursor by numBytes, and returns a pointer to the previous stream cursor.
 		inline U8* advance(Uptr numBytes)
 		{
-			if(next + numBytes > end) { extendBuffer(numBytes); }
+			if(next == nullptr || next + numBytes > end) { extendBuffer(numBytes); }
 			WAVM_ASSERT_THROW(next + numBytes <= end);
 
 			U8* data = next;