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annotate gcc/testsuite/c-c++-common/pr51628-10.c @ 145:1830386684a0

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gcc-9.2.0
author anatofuz
date Thu, 13 Feb 2020 11:34:05 +0900
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145
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1 /* PR c/51628. */
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2 /* { dg-do run { target int128 } } */
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3 /* { dg-options "-O2" } */
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4
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5 struct pair_t
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6 {
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7 char c;
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8 __int128_t i;
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9 } __attribute__ ((packed));
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10
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11 typedef struct unaligned_int128_t_
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12 {
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13 __int128_t value;
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14 } __attribute__((packed, may_alias)) unaligned_int128_t;
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15
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16 struct pair_t p = {0, 1};
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17 unaligned_int128_t *addr = (unaligned_int128_t *) &p.i;
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18
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19 int
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20 main()
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21 {
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22 addr->value = ~(__int128_t)0;
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23 return (p.i != 1) ? 0 : 1;
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24 }