Viewing file:  Warray-bounds-3.c (2.26 KB) -rw-r--r--
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/* { dg-do compile } */
/* { dg-options "-O2 -Warray-bounds" } */
/* { dg-skip-if "exceeds eBPF stack limit" { bpf-*-* } } */
/* based on PR 31227 */
typedef __SIZE_TYPE__ size_t;
extern size_t strlen (const char *);
struct iovec
{
void *iov_base;
size_t iov_len;
};
struct S
{
const char *abday[7];
const char *day[7];
const char *abmon[12];
const char *mon[12];
const char *am_pm[2];
};
extern void foo (size_t, struct iovec *);
void
bar (struct S *time)
{
struct iovec iov[43];
size_t cnt;
iov[0].iov_base = (void *) "abc";
iov[0].iov_len = 3;
iov[1].iov_base = (void *) "def";
iov[1].iov_len = 3;
for (cnt = 0; cnt < 7; ++cnt)
{
iov[2 + cnt].iov_base = (void *) (time->abday[cnt] ?: "");
iov[2 + cnt].iov_len = strlen (iov[2 + cnt].iov_base) + 1;
}
for (; cnt < 14; ++cnt)
{
iov[2 + cnt].iov_base = (void *) (time->day[cnt - 7] ?: "");
iov[2 + cnt].iov_len = strlen (iov[2 + cnt].iov_base) + 1;
}
for (; cnt < 26; ++cnt)
{
iov[2 + cnt].iov_base = (void *) (time->abmon[cnt - 14] ?: "");
iov[2 + cnt].iov_len = strlen (iov[2 + cnt].iov_base) + 1;
}
for (; cnt < 38; ++cnt)
{
iov[2 + cnt].iov_base = (void *) (time->mon[cnt - 26] ?: "");
iov[2 + cnt].iov_len = strlen (iov[2 + cnt].iov_base) + 1;
}
for (; cnt < 40; ++cnt)
{
iov[2 + cnt].iov_base = (void *) (time->am_pm[cnt - 38] ?: "");
iov[2 + cnt].iov_len = strlen (iov[2 + cnt].iov_base) + 1;
}
foo (2 + cnt, iov);
}
struct malloc_chunk {
long prev_size;
long size;
struct malloc_chunk* fd;
struct malloc_chunk* bk;
};
typedef struct malloc_chunk* mchunkptr;
struct malloc_state {
mchunkptr top;
mchunkptr last_remainder;
mchunkptr bins[128 * 2 - 2];
};
#define bin_at(m, i) \
(mchunkptr) (((char *) &((m)->bins[((i) - 1) * 2])) \
- __builtin_offsetof (struct malloc_chunk, fd))
void malloc_init_state(struct malloc_state *av)
{
int i;
mchunkptr bin;
for (i = 1; i < 128; ++i) {
bin = bin_at(av,i);
bin->fd = bin->bk = bin;
}
}
typedef unsigned short WCHAR;
typedef WCHAR *LPWSTR;
static void g(LPWSTR dest, int len) {
dest[len-1] = 0;
}
void f() {
WCHAR szPathW[260];
g(szPathW, 260);
}
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