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Avoid many "variable 'Sub' set but not used [-Wunused-but-set-variable]" warnings

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with gcc-4.6.  The warning is wrong, since Sub *is* used (perhaps gcc is confused
because the use of Sub is constant folded away?), but since it is trivial to avoid,
and massively reduces the amount of warning spew, just workaround the wrong warning.

llvm-svn: 105788
This commit is contained in:
Duncan Sands 2010-06-10 15:06:05 +00:00
parent 78593d094f
commit 83a8bdd9b7
1 changed files with 2 additions and 3 deletions
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5
include/llvm/SymbolTableListTraits.h
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@ -47,9 +47,8 @@ public:
/// of instructions, it returns the BasicBlock that owns them.
ItemParentClass *getListOwner() {
typedef iplist<ValueSubClass> ItemParentClass::*Sublist;
Sublist Sub(ItemParentClass::
getSublistAccess(static_cast<ValueSubClass*>(0)));
size_t Offset(size_t(&((ItemParentClass*)0->*Sub)));
size_t Offset(size_t(&((ItemParentClass*)0->*ItemParentClass::
getSublistAccess(static_cast<ValueSubClass*>(0)))));
iplist<ValueSubClass>* Anchor(static_cast<iplist<ValueSubClass>*>(this));
return reinterpret_cast<ItemParentClass*>(reinterpret_cast<char*>(Anchor)-
Offset);