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-rw-r--r--llvm/lib/Bitcode/Reader/BitcodeReader.cpp2
1 files changed, 2 insertions, 0 deletions
diff --git a/llvm/lib/Bitcode/Reader/BitcodeReader.cpp b/llvm/lib/Bitcode/Reader/BitcodeReader.cpp
index 4044ac80f20..9e5e46aae0b 100644
--- a/llvm/lib/Bitcode/Reader/BitcodeReader.cpp
+++ b/llvm/lib/Bitcode/Reader/BitcodeReader.cpp
@@ -1497,6 +1497,8 @@ std::error_code BitcodeReader::ParseTypeTableBody() {
case bitc::TYPE_CODE_VECTOR: // VECTOR: [numelts, eltty]
if (Record.size() < 2)
return Error("Invalid record");
+ if (Record[0] == 0)
+ return Error("Invalid vector length");
ResultTy = getTypeByID(Record[1]);
if (!ResultTy || !StructType::isValidElementType(ResultTy))
return Error("Invalid type");
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