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Check bit widths before trying to get a type.

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Added a test case for it.
Also added run lines for the test case in r227566.

Bugs found with afl-fuzz

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@227589 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Filipe Cabecinhas
2015-01-30 18:13:50 +00:00
parent dd62b7ae96
commit 1897b5c08c
3 changed files with 13 additions and 2 deletions
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9
lib/Bitcode/Reader/BitcodeReader.cpp
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@ -950,12 +950,17 @@ std::error_code BitcodeReader::ParseTypeTableBody() {
case bitc::TYPE_CODE_X86_MMX: // X86_MMX
ResultTy = Type::getX86_MMXTy(Context);
break;
case bitc::TYPE_CODE_INTEGER: // INTEGER: [width]
case bitc::TYPE_CODE_INTEGER: { // INTEGER: [width]
if (Record.size() < 1)
return Error("Invalid record");
ResultTy = IntegerType::get(Context, Record[0]);
uint64_t NumBits = Record[0];
if (NumBits < IntegerType::MIN_INT_BITS ||
NumBits > IntegerType::MAX_INT_BITS)
return Error("Bitwidth for integer type out of range");
ResultTy = IntegerType::get(Context, NumBits);
break;
}
case bitc::TYPE_CODE_POINTER: { // POINTER: [pointee type] or
// [pointee type, address space]
if (Record.size() < 1)