view gcc/testsuite/c-c++-common/pr51628-26.c @ 158:494b0b89df80 default tip

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author Shinji KONO <kono@ie.u-ryukyu.ac.jp>
date Mon, 25 May 2020 18:13:55 +0900
parents 1830386684a0
children
line wrap: on
line source

/* PR c/51628.  */
/* { dg-do compile } */
/* { dg-options "-O" } */

struct A {
  int i;
} __attribute__ ((packed));

struct A p = {1};
int *addr;

int i, j;

void
foo1 (void)
{
  addr = (i = -1, &p.i);
/* { dg-warning "may result in an unaligned pointer value" "" { target *-*-* } .-1 } */
}

void
foo2 (void)
{
  addr = (i = -1, j = -2, &p.i);
/* { dg-warning "may result in an unaligned pointer value" "" { target *-*-* } .-1 } */
}

void
foo3 (void)
{
  addr = (i = -1, (j = -2, &p.i));
/* { dg-warning "may result in an unaligned pointer value" "" { target *-*-* } .-1 } */
}