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  1. #include <stdio.h>
  2.  
  3. constexpr int f()
  4. {
  5.     return printf("a side effect!\n");
  6. }
  7.  
  8. int main()
  9. {
  10.     char a[f()];
  11.     printf("%zd\n", sizeof a);
  12. }
  13.  
Success #stdin #stdout 0s 3340KB
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stdin
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Standard input is empty
stdout
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a side effect!
15
https://ideone.com/QNL5u8
language:
C++14 (gcc 8.3)
created:
10 years ago
visibility:
public

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