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AsmParser: Don't crash on malformed attribute groups

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This fixes PR21785.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@223801 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
David Majnemer 2014-12-09 18:33:57 +00:00
parent 60d733acc5
commit db7b69e3a6
2 changed files with 7 additions and 1 deletions
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4
lib/AsmParser/LLParser.cpp
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@ -869,7 +869,9 @@ bool LLParser::ParseUnnamedAttrGrp() {
LocTy AttrGrpLoc = Lex.getLoc();
Lex.Lex();
assert(Lex.getKind() == lltok::AttrGrpID);
if (Lex.getKind() != lltok::AttrGrpID)
return TokError("expected attribute group id");
unsigned VarID = Lex.getUIntVal();
std::vector<unsigned> unused;
LocTy BuiltinLoc;

4
test/Assembler/invalid-attrgrp.ll Normal file
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@ -0,0 +1,4 @@
; RUN: not llvm-as < %s 2>&1 | FileCheck %s
attributes
; CHECK: expected attribute group id