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[CodeView] Validate the vftable offset

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llvm-svn: 271791
This commit is contained in:
David Majnemer 2016-06-04 15:40:29 +00:00
parent 3e22310a07
commit 838aba6c09
1 changed files with 10 additions and 1 deletions
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11
include/llvm/DebugInfo/CodeView/TypeRecord.h
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@ -1061,8 +1061,12 @@ public:
MethodOptions Options = L->Attrs.getFlags();
MethodKind MethKind = L->Attrs.getMethodKind();
MemberAccess Access = L->Attrs.getAccess();
return OneMethodRecord(L->Type, MethKind, Options, Access, VFTableOffset,
OneMethodRecord Method(L->Type, MethKind, Options, Access, VFTableOffset,
Name);
// Validate the vftable offset.
if (Method.isIntroducingVirtual() && Method.getVFTableOffset() < 0)
return std::make_error_code(std::errc::illegal_byte_sequence);
return Method;
}
TypeIndex getType() const { return Type; }
@ -1122,6 +1126,11 @@ public:
Methods.emplace_back(L->Type, MethKind, Options, Access, VFTableOffset,
StringRef());
// Validate the vftable offset.
auto &Method = Methods.back();
if (Method.isIntroducingVirtual() && Method.getVFTableOffset() < 0)
return std::make_error_code(std::errc::illegal_byte_sequence);
}
return MethodOverloadListRecord(Methods);
}