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Fix LTO builds with xcode 4.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@132132 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Rafael Espindola 2011-05-26 18:59:54 +00:00
parent cf0cd8005c
commit c9687b32fa
1 changed files with 11 additions and 1 deletions
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12
lib/Bitcode/Reader/BitcodeReader.cpp
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@ -1588,8 +1588,18 @@ bool BitcodeReader::ParseBitcodeInto(Module *M) {
while (!Stream.AtEndOfStream()) {
unsigned Code = Stream.ReadCode();
if (Code != bitc::ENTER_SUBBLOCK)
if (Code != bitc::ENTER_SUBBLOCK) {
// The ranlib in xcode 4 will align archive members by appending newlines to the
// end of them. If this file size is a multiple of 4 but not 8, we have to read and
// ignore these final 4 bytes :-(
if (Stream.GetAbbrevIDWidth() == 2 && Code == 2 &&
Stream.Read(6) == 2 && Stream.Read(24) == 0xa0a0a &&
Stream.AtEndOfStream())
return false;
return Error("Invalid record at top-level");
}
unsigned BlockID = Stream.ReadSubBlockID();