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Make sure that isValidElementType(Type) before calling {Array,Struct}Type::get(Type)

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Bug found with AFL fuzz.

llvm-svn: 236073
This commit is contained in:
Filipe Cabecinhas committed 2015-04-29 01:27:01 +00:00
1 parent 180b92168d
commit f15fb032ef
4 files changed
+11 -2
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llvm/lib/Bitcode/Reader/BitcodeReader.cpp
+4 -2
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@@ -1474,7 +1474,8 @@ std::error_code BitcodeReader::ParseTypeTableBody() {
case bitc::TYPE_CODE_ARRAY: // ARRAY: [numelts, eltty]
if (Record.size() < 2)
return Error("Invalid record");
if ((ResultTy = getTypeByID(Record[1])))
if ((ResultTy = getTypeByID(Record[1])) &&
StructType::isValidElementType(ResultTy))
ResultTy = ArrayType::get(ResultTy, Record[0]);
else
return Error("Invalid type");
@@ -1482,7 +1483,8 @@ std::error_code BitcodeReader::ParseTypeTableBody() {
case bitc::TYPE_CODE_VECTOR: // VECTOR: [numelts, eltty]
if (Record.size() < 2)
return Error("Invalid record");
if ((ResultTy = getTypeByID(Record[1])))
if ((ResultTy = getTypeByID(Record[1])) &&
StructType::isValidElementType(ResultTy))
ResultTy = VectorType::get(ResultTy, Record[0]);
else
return Error("Invalid type");