From 55a85a47d4cb7bed22cd03f9f8003441a33cf1a7 Mon Sep 17 00:00:00 2001 From: "Vikram S. Adve" Date: Wed, 4 Jun 2003 02:10:37 +0000 Subject: [PATCH] Undo one of those last fixes -- it was incorrect. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@6593 91177308-0d34-0410-b5e6-96231b3b80d8 --- lib/Target/TargetData.cpp | 8 +++++--- 1 file changed, 5 insertions(+), 3 deletions(-) diff --git a/lib/Target/TargetData.cpp b/lib/Target/TargetData.cpp index ede96f7aaed..bdeb4e99c6a 100644 --- a/lib/Target/TargetData.cpp +++ b/lib/Target/TargetData.cpp @@ -193,10 +193,12 @@ uint64_t TargetData::getIndexedOffset(const Type *ptrTy, Ty = cast(Ty)->getElementType(); // Get the array index and the size of each array element. - // Both must be known constants, or the index shd be 0; else this fails. + // The size must be a known value, except if arrayIdx is 0. + // In particular, don't try to get the type size if the arrayIdx is 0: + // 0 index into an unsized type is legal and should be allowed. int64_t arrayIdx = cast(Idx[CurIDX])->getValue(); - Result += arrayIdx * (int64_t)getTypeSize(Ty); - + Result += arrayIdx == 0? 0 + : arrayIdx * (int64_t)getTypeSize(Ty); } else { const StructType *STy = cast(Ty); assert(Idx[CurIDX]->getType() == Type::UByteTy && "Illegal struct idx");