[ELF] Move SymbolUnion assertions to source file
Otherwise they fires for every single file which includes the header,
which is very noisy when building.
Reviewed By: MaskRay, peter.smith
Differential Revision: https://reviews.llvm.org/D124041
diff --git a/lld/ELF/Symbols.cpp b/lld/ELF/Symbols.cpp
index b087dd1..5706f54 100644
--- a/lld/ELF/Symbols.cpp
+++ b/lld/ELF/Symbols.cpp
@@ -16,6 +16,7 @@
#include "Writer.h"
#include "lld/Common/ErrorHandler.h"
#include "lld/Common/Strings.h"
+#include "llvm/Support/Compiler.h"
#include <cstring>
using namespace llvm;
@@ -24,6 +25,24 @@
using namespace lld;
using namespace lld::elf;
+static_assert(sizeof(SymbolUnion) <= 64, "SymbolUnion too large");
+
+template <typename T> struct AssertSymbol {
+ static_assert(std::is_trivially_destructible<T>(),
+ "Symbol types must be trivially destructible");
+ static_assert(sizeof(T) <= sizeof(SymbolUnion), "SymbolUnion too small");
+ static_assert(alignof(T) <= alignof(SymbolUnion),
+ "SymbolUnion not aligned enough");
+};
+
+LLVM_ATTRIBUTE_UNUSED static inline void assertSymbols() {
+ AssertSymbol<Defined>();
+ AssertSymbol<CommonSymbol>();
+ AssertSymbol<Undefined>();
+ AssertSymbol<SharedSymbol>();
+ AssertSymbol<LazyObject>();
+}
+
std::string lld::toString(const elf::Symbol &sym) {
StringRef name = sym.getName();
std::string ret = demangle(name, config->demangle);
