30 lines
762 B
C
30 lines
762 B
C
#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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int main ()
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{
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struct foo {
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int part1: 8;
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int nothing : 1;
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int part2 : 5;
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int lots_more_nothing : 3;
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int some_padding; /* for 64-bit hosts */
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float some_more_nothing;
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double yet_more_nothing;
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};
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#define offsetof(TYPE, MEMBER) ((size_t) &((TYPE *) 0)->MEMBER)
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struct foo* q = (struct foo *) malloc (offsetof (struct foo, some_more_nothing));
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q->nothing = 1; /* touch q */
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/* The RHS of the following expression is meant to trigger a
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fold-const.c mapping the expression to a BIT_FIELD_REF. It glues
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together the accesses to the two non-neighbouring bitfields into a
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single bigger boolean test. */
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q->lots_more_nothing = (q->part1 == 13 && q->part2 == 7);
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free (q);
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return 0;
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}
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