32 lines
603 B
C
32 lines
603 B
C
/* { dg-do run { target *-*-linux* *-*-solaris* } } */
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/* { dg-options -O2 } */
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#include <sys/types.h>
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#include <sys/mman.h>
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#include <unistd.h>
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#include <stdlib.h>
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struct S { long x __attribute__((packed)); }; /* { dg-warning "attribute ignored" "" { target default_packed } } */
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volatile long sink;
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void foo (struct S *s)
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{
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sink = s->x;
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}
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int main ()
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{
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size_t ps = getpagesize ();
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char *ptr, *page;
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struct S *s;
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ptr = malloc (3*ps);
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page = (char *)(((size_t)ptr + (ps - 1)) & -ps);
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munmap (page + ps, ps);
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s = (struct S *)(page + ps - sizeof(struct S));
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foo(s);
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return 0;
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}
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