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BitcodeReader: Allow METADATA_STRINGS to only have !""

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Support parsing a METADATA_STRINGS record that only has a single piece
of metadata, !"".  Fixes a corner case in r264551.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@264699 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Duncan P. N. Exon Smith
2016-03-29 05:25:17 +00:00
parent f81b3074f7
commit 859d69a3ce
2 changed files with 8 additions and 1 deletions
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2
lib/Bitcode/Reader/BitcodeReader.cpp
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@@ -1899,7 +1899,7 @@ std::error_code BitcodeReader::parseMetadataStrings(ArrayRef<uint64_t> Record,
unsigned StringsOffset = Record[1];
if (!NumStrings)
return error("Invalid record: metadata strings with no strings");
if (StringsOffset >= Blob.size())
if (StringsOffset > Blob.size())
return error("Invalid record: metadata strings corrupt offset");
StringRef Lengths = Blob.slice(0, StringsOffset);