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Common: Fix SCOPE_EXIT to actually create unique identifiers.

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This commit is contained in:
Yuri Kunde Schlesner 2015-01-11 13:32:31 -02:00
parent afc416c607
commit fc11aff955
2 changed files with 7 additions and 1 deletions
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4
src/common/common_funcs.h
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@ -31,6 +31,10 @@ template<> struct CompileTimeAssert<true> {};
#define ARRAY_SIZE(a) (sizeof(a) / sizeof(a[0]))
/// Textually concatenates two tokens. The double-expansion is required by the C preprocessor.
#define CONCAT2(x, y) DO_CONCAT2(x, y)
#define DO_CONCAT2(x, y) x ## y
#ifndef _MSC_VER
#include <errno.h>

4
src/common/scope_exit.h
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@ -4,6 +4,8 @@
#pragma once
#include "common/common_funcs.h"
namespace detail {
template <typename Func>
struct ScopeExitHelper {
@ -34,4 +36,4 @@ namespace detail {
* }
* \endcode
*/
#define SCOPE_EXIT(body) auto scope_exit_helper_##__LINE__ = detail::ScopeExit([&]() body)
#define SCOPE_EXIT(body) auto CONCAT2(scope_exit_helper_, __LINE__) = detail::ScopeExit([&]() body)