can defer be added in the next version?

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wren0315
Posts: 1
Joined: Jul 31, 2022 15:10

can defer be added in the next version?

Post by wren0315 »

very convenient go-style defer func
hope to see it in the next version

Code: Select all

#include <stdio.h>
#include <stdlib.h>

#define defer defer__2(__COUNTER__)
#define defer__2(X) defer__3(X)
#define defer__3(X) defer__4(defer__id##X)
#define defer__4(ID) auto void ID##func(char (*)[]);
__attribute__((cleanup(ID##func))) char ID##var[0]; void ID##func(char
(*ID##param)[])

int main(void)
{
int a=5,b=5,c=5,d=5;

defer {
printf("defer 1111111111111\n");
}

defer {
a = 1;
b = 2;
c = 3;
d = 4;
printf("defer 22222222222222\n");
}

printf("33333333333333333333\n");
printf("a=%d b=%d c=%d d=%d \n",a,b,c,d);
return 0;
}
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