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Silence g++ 4.9 build issue

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lib/Support/ThreadLocal.cpp:53:15: error: typedef 'SIZE_TOO_BIG' locally defined but not used [-Werror=unused-local-typedefs]
   typedef int SIZE_TOO_BIG[sizeof(pthread_key_t) <= sizeof(data) ? 1 : -1];

Done the C++11 way, switching on and using LLVM_STATIC_ASSERT() instead of LLVM_ATTRIBUTE_UNUSED.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@198255 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Alp Toker 2013-12-31 03:16:55 +00:00
parent ec62c1ae99
commit e27bded358
2 changed files with 5 additions and 3 deletions
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3
include/llvm/Support/Compiler.h
View File

@ -389,7 +389,8 @@
/// \macro LLVM_STATIC_ASSERT
/// \brief Expands to C/C++'s static_assert on compilers which support it.
#if __has_feature(cxx_static_assert) || LLVM_MSC_PREREQ(1600)
#if __has_feature(cxx_static_assert) || \
defined(__GXX_EXPERIMENTAL_CXX0X__) || LLVM_MSC_PREREQ(1600)
# define LLVM_STATIC_ASSERT(expr, msg) static_assert(expr, msg)
#elif __has_feature(c_static_assert)
# define LLVM_STATIC_ASSERT(expr, msg) _Static_assert(expr, msg)

5
lib/Support/ThreadLocal.cpp
View File

@ -12,6 +12,7 @@
//===----------------------------------------------------------------------===//
#include "llvm/Config/config.h"
#include "llvm/Support/Compiler.h"
#include "llvm/Support/ThreadLocal.h"
//===----------------------------------------------------------------------===//
@ -26,7 +27,7 @@ using namespace sys;
ThreadLocalImpl::ThreadLocalImpl() : data() { }
ThreadLocalImpl::~ThreadLocalImpl() { }
void ThreadLocalImpl::setInstance(const void* d) {
typedef int SIZE_TOO_BIG[sizeof(d) <= sizeof(data) ? 1 : -1];
LLVM_STATIC_ASSERT(sizeof(d) <= sizeof(data), "size too big");
void **pd = reinterpret_cast<void**>(&data);
*pd = const_cast<void*>(d);
}
@ -50,7 +51,7 @@ namespace llvm {
using namespace sys;
ThreadLocalImpl::ThreadLocalImpl() : data() {
typedef int SIZE_TOO_BIG[sizeof(pthread_key_t) <= sizeof(data) ? 1 : -1];
LLVM_STATIC_ASSERT(sizeof(pthread_key_t) <= sizeof(data), "size too big");
pthread_key_t* key = reinterpret_cast<pthread_key_t*>(&data);
int errorcode = pthread_key_create(key, NULL);
assert(errorcode == 0);