From 6621cb7478f02fd146eb26d2b0a3adadbc09596e Mon Sep 17 00:00:00 2001 From: Filipe Cabecinhas Date: Thu, 23 Apr 2015 13:38:21 +0000 Subject: Be more strict about the operand for the array type in BitcodeReader Summary: Bug found with AFL fuzz. Reviewers: rafael Subscribers: llvm-commits Differential Revision: http://reviews.llvm.org/D9016 llvm-svn: 235596 --- llvm/lib/Bitcode/Reader/BitstreamReader.cpp | 3 +++ 1 file changed, 3 insertions(+) (limited to 'llvm/lib/Bitcode/Reader/BitstreamReader.cpp') diff --git a/llvm/lib/Bitcode/Reader/BitstreamReader.cpp b/llvm/lib/Bitcode/Reader/BitstreamReader.cpp index ff37b8e..2f34532 100644 --- a/llvm/lib/Bitcode/Reader/BitstreamReader.cpp +++ b/llvm/lib/Bitcode/Reader/BitstreamReader.cpp @@ -201,6 +201,9 @@ unsigned BitstreamCursor::readRecord(unsigned AbbrevID, // Get the element encoding. assert(i+2 == e && "array op not second to last?"); const BitCodeAbbrevOp &EltEnc = Abbv->getOperandInfo(++i); + if (EltEnc.getEncoding() == BitCodeAbbrevOp::Array || + EltEnc.getEncoding() == BitCodeAbbrevOp::Blob) + report_fatal_error("Array element type can't be an Array or a Blob"); // Read all the elements. for (; NumElts; --NumElts) -- cgit v1.1