diff options
Diffstat (limited to 'gcc/testsuite/c-c++-common/pr51628-4.c')
| -rw-r--r-- | gcc/testsuite/c-c++-common/pr51628-4.c | 35 |
1 files changed, 35 insertions, 0 deletions
diff --git a/gcc/testsuite/c-c++-common/pr51628-4.c b/gcc/testsuite/c-c++-common/pr51628-4.c new file mode 100644 index 00000000000..c4c1fb72d6d --- /dev/null +++ b/gcc/testsuite/c-c++-common/pr51628-4.c @@ -0,0 +1,35 @@ +/* PR c/51628. */ +/* { dg-do compile } */ +/* { dg-options "-O" } */ + +struct pair_t +{ + int x; + int i; +} __attribute__((packed)); + +extern struct pair_t p; +extern int *x; +extern void bar (int *); + +int *addr = &p.i; +/* { dg-warning "may result in an unaligned pointer value" "" { target *-*-* } .-1 } */ + +int * +foo (void) +{ + struct pair_t arr[2] = { { 1, 10 }, { 2, 20 } }; + int *p0, *p1; + p0 = &arr[0].i; +/* { dg-warning "may result in an unaligned pointer value" "" { target *-*-* } .-1 } */ + bar (p0); + p1 = &arr[1].i; +/* { dg-warning "may result in an unaligned pointer value" "" { target *-*-* } .-1 } */ + bar (p1); + bar (&p.i); +/* { dg-warning "may result in an unaligned pointer value" "" { target *-*-* } .-1 } */ + x = &p.i; +/* { dg-warning "may result in an unaligned pointer value" "" { target *-*-* } .-1 } */ + return &p.i; +/* { dg-warning "may result in an unaligned pointer value" "" { target *-*-* } .-1 } */ +} |