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Mons/defer.h

Created February 19, 2016 21:18
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C DEFER
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defer.h
// (c) Roman Tokarev
#ifndef _DEFER_H_
#define _DEFER_H_
#define CONCAT(a_, b_) a_ ## b_
#define CONCAT2(a_, b_) CONCAT(a_, b_)
#define UNIQUE_TOKEN(var_) CONCAT2(var_, __LINE__)
#define DEFER \
auto void UNIQUE_TOKEN(defer_foo)(char *); \
__attribute__((unused, cleanup(UNIQUE_TOKEN(defer_foo)))) char UNIQUE_TOKEN(defer_var); \
void UNIQUE_TOKEN(defer_foo)(char *unused __attribute__((unused)))
#endif // _DEFER_H_
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