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  1. #include <stdio.h>
  2.  
  3. void foo( unsigned char a, 
  4. 	  unsigned char b, 
  5. 	  unsigned char c, 
  6. 	  ...  )
  7. {
  8. 	unsigned char *d = (&c) - 1;
  9.  
  10.  
  11.         printf( "d: %hhu\n", 
  12. 		*d );
  13. }
  14.  
  15.  
  16.  
  17. int main(void)
  18. {
  19.         foo( 1, 2, 3, 4 );
  20.  
  21.  
  22.         return 0;
  23. }
  24.  
Success #stdin #stdout 0.02s 1720KB
comments (?)
stdin 
Standard input is empty
stdout 
d: 0
https://ideone.com/d29cC
language:
C99 (gcc 8.3)
created:
14 years ago
visibility:
public

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