what is the purpose of "(void) ( { CODE } )" in c?
c
Solution
`({ })` is a `gcc` extension called a statement expression.
http://gcc.gnu.org/onlinedocs/gcc/Statement-Exprs.html
A statement expression yields a value and the `(void)` cast is probably here to remove the compiler warning or to make explicit that the value of the statement expression is not used.
Now `(void) ({ })` is the same as a simple compound statement `{}` and there is no point of using it.
Problem
In a generated piece of c code I found something like this (edited): ``` #include <stdio.h> int main() { (void) ( { int i = 1; int y = 2; printf("%d %d\n", i,y); } ); return 0; } ``` I believe I have never seen the construct `(void) ( { CODE } )` before, nor am I able to figure out what the purpose might be. So, what does this construct do?