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Use AlignOf traits to enable static_assert.

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This is better than runtime asserts.  Thanks to David Blaikie for the help here.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@239431 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Pete Cooper 2015-06-09 20:58:03 +00:00
parent ea8e85d925
commit a96fc7ab00
1 changed files with 3 additions and 3 deletions
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6
lib/MC/MCSymbol.cpp
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@ -28,9 +28,9 @@ void *MCSymbol::operator new(size_t s, const StringMapEntry<bool> *Name,
// For safety, ensure that the alignment of a pointer is enough for an
// MCSymbol. This also ensures we don't need padding between the name and
// symbol.
// FIXME: Use static_assert when constexpr is supported.
assert(alignOf<MCSymbol>() <= alignOf<NameEntryStorageTy>() &&
"Bad alignment of MCSymbol");
static_assert(AlignOf<MCSymbol>::Alignment <=
AlignOf<NameEntryStorageTy>::Alignment,
"Bad alignment of MCSymbol");
void *Storage = Ctx.allocate(Size, alignOf<NameEntryStorageTy>());
NameEntryStorageTy *Start = static_cast<NameEntryStorageTy*>(Storage);
NameEntryStorageTy *End = Start + (Name ? 1 : 0);