[demangler] Avoid alignment warning
The alignment specified by a constant for the field
`BumpPointerAllocator::InitialBuffer` exceeded the alignment
guaranteed by `malloc` and `new` on Windows. This change set
the alignment value to that of `long double`, which is defined
by the used platform.
It fixes https://bugs.llvm.org/show_bug.cgi?id=37944.
Differential Revision: https://reviews.llvm.org/D48889
git-svn-id: https://llvm.org/svn/llvm-project/libcxxabi/trunk@336312 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/src/cxa_demangle.cpp b/src/cxa_demangle.cpp
index d70ffdf..901db66 100644
--- a/src/cxa_demangle.cpp
+++ b/src/cxa_demangle.cpp
@@ -1890,7 +1890,7 @@
static constexpr size_t AllocSize = 4096;
static constexpr size_t UsableAllocSize = AllocSize - sizeof(BlockMeta);
- alignas(16) char InitialBuffer[AllocSize];
+ alignas(long double) char InitialBuffer[AllocSize];
BlockMeta* BlockList = nullptr;
void grow() {
