6741411b03
Targets which pack structures by default will not get warnings about unaligned access to structure members. gcc/testsuite/ChangeLog: * c-c++-common/Waddress-of-packed-member-1.c: Filter dg-warning for targets who pack by default. * c-c++-common/Waddress-of-packed-member-2.c: Ditto. * c-c++-common/pr51628-13.c: Ditto. * c-c++-common/pr51628-15.c: Ditto. * c-c++-common/pr51628-16.c: Ditto. * c-c++-common/pr51628-26.c: Ditto. * c-c++-common/pr51628-27.c: Ditto. * c-c++-common/pr51628-28.c: Ditto. * c-c++-common/pr51628-29.c: Ditto. * c-c++-common/pr51628-3.c: Ditto. * c-c++-common/pr51628-30.c: Ditto. * c-c++-common/pr51628-31.c: Ditto. * c-c++-common/pr51628-32.c: Ditto. * c-c++-common/pr51628-33.c: Ditto. * c-c++-common/pr51628-35.c: Ditto. * c-c++-common/pr51628-4.c: Ditto. * c-c++-common/pr51628-5.c: Ditto. * c-c++-common/pr51628-6.c: Ditto. * c-c++-common/pr51628-8.c: Ditto. * c-c++-common/pr51628-9.c: Ditto. * c-c++-common/pr88664-2.c: Ditto. * gcc.dg/pr51628-17.c: Ditto. * gcc.dg/pr51628-19.c: Ditto. * gcc.dg/pr51628-20.c: Ditto. * gcc.dg/pr51628-21.c: Ditto. * gcc.dg/pr51628-22.c: Ditto. * gcc.dg/pr51628-24.c: Ditto. * gcc.dg/pr51628-25.c: Ditto. * gcc.dg/pr51628-34.c: Ditto. * gcc.dg/pr88928.c: Ditto. Signed-off-by: Dimitar Dimitrov <dimitar@dinux.eu>
36 lines
1.1 KiB
C
36 lines
1.1 KiB
C
/* PR c/51628. */
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/* { dg-do compile } */
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/* { dg-options "-O" } */
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struct pair_t
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{
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int x;
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int i[4];
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} __attribute__ ((packed));
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extern struct pair_t p;
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extern int *x;
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extern void bar (int *);
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int *addr = p.i;
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/* { dg-warning "may result in an unaligned pointer value" "" { target { ! default_packed } } .-1 } */
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int *
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foo (struct pair_t *p)
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{
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int *p0, *p1;
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p0 = p->i;
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/* { dg-warning "may result in an unaligned pointer value" "" { target { ! default_packed } } .-1 } */
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bar (p0);
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p1 = &p->i[1];
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/* { dg-warning "may result in an unaligned pointer value" "" { target { ! default_packed } } .-1 } */
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bar (p1);
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bar (p->i);
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/* { dg-warning "may result in an unaligned pointer value" "" { target { ! default_packed } } .-1 } */
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bar (&p->i[2]);
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/* { dg-warning "may result in an unaligned pointer value" "" { target { ! default_packed } } .-1 } */
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x = p->i;
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/* { dg-warning "may result in an unaligned pointer value" "" { target { ! default_packed } } .-1 } */
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return &p->i[3];
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/* { dg-warning "may result in an unaligned pointer value" "" { target { ! default_packed } } .-1 } */
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}
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