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kaityo256/test.cpp

Created July 10, 2017 06:11
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Compilation takes too long
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test.cpp
#include <stdio.h>
const int N = 100000000;
int
main(void){
static int a[N] = {};
printf("%d\n",a[0]);
}
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kaityo256 commented Jul 10, 2017

If you compile it with "g++ -O3 -g", then it takes too long to compile.
This phenomenon depends on version of GCC. I observed this behavior with following versions,

  • g++ (Homebrew GCC 6.3.0_1) 6.3.0
  • g++ (GCC) 5.1.0
  • g++ (GCC) 4.8.5 20150623 (Red Hat 4.8.5-4)

Other compilers, such as clang++ and icpc, does not show this behavior.

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