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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.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@105788 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Duncan Sands 2010-06-10 15:06:05 +00:00
parent 345b378309
commit 39dea6ff76
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);