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/* Verify that
{ dg-do compile }
{ dg-options "-O2 -Wstringop-truncation -Wno-stringop-overflow -ftrack-macro-expansion=0" } */
typedef __SIZE_TYPE__ size_t;
#define stpncpy(d, s, n) __builtin_stpncpy ((d), (s), (n))
#define strncpy(d, s, n) __builtin_stpncpy ((d), (s), (n))
void sink (void*);
struct A {
char arr[3] __attribute__ ((nonstring));
char str[3];
};
struct B { struct A a[3]; int i; };
struct C { struct B b[3]; int i; };
void stpncpy_arr_1 (struct C *pc, const char *s)
{
stpncpy (pc->b[0].a[0].arr, s, sizeof pc->b[0].a[0].arr);
sink (pc->b[0].a[0].arr);
stpncpy (pc->b[0].a[1].arr, s, sizeof pc->b[0].a[1].arr);
sink (pc->b[0].a[1].arr);
stpncpy (pc->b[0].a[2].arr, s, sizeof pc->b[0].a[2].arr);
sink (pc->b[0].a[2].arr);
stpncpy (pc->b[1].a[0].arr, s, sizeof pc->b[1].a[0].arr);
sink (pc->b[1].a[0].arr);
stpncpy (pc->b[1].a[1].arr, s, sizeof pc->b[1].a[1].arr);
sink (pc->b[1].a[1].arr);
stpncpy (pc->b[1].a[2].arr, s, sizeof pc->b[1].a[2].arr);
sink (pc->b[1].a[2].arr);
stpncpy (pc->b[2].a[0].arr, s, sizeof pc->b[2].a[0].arr);
sink (pc->b[2].a[0].arr);
stpncpy (pc->b[2].a[1].arr, s, sizeof pc->b[2].a[1].arr);
sink (pc->b[2].a[1].arr);
stpncpy (pc->b[2].a[2].arr, s, sizeof pc->b[2].a[2].arr);
sink (pc->b[2].a[2].arr);
}
void stpncpy_str_nowarn_1 (struct C *pc, const char *s)
{
stpncpy (pc->b[0].a[0].str, s, sizeof pc->b[0].a[0].str)[-1] = 0; /* { dg-bogus "\\\[-Wstringop-truncation" } */
}
void stpncpy_str_nowarn_2 (struct C *pc, const char *s)
{
*stpncpy (pc->b[0].a[0].str, s, sizeof pc->b[0].a[0].str - 1) = 0; /* { dg-bogus "\\\[-Wstringop-truncation" } */
}
void stpncpy_str_nowarn_3 (struct C *pc, const char *s)
{
char *d = stpncpy (pc->b[0].a[0].str, s, sizeof pc->b[0].a[0].str); /* { dg-bogus "\\\[-Wstringop-truncation" } */
d[-1] = 0;
}
void stpncpy_str_nowarn_4 (struct C *pc, const char *s)
{
char *d = stpncpy (pc->b[0].a[0].str, s, sizeof pc->b[0].a[0].str - 1); /* { dg-bogus "\\\[-Wstringop-truncation" } */
*d = 0;
}
void strncpy_arr_1 (struct C *pc, const char *s)
{
strncpy (pc->b[0].a[0].arr, s, sizeof pc->b[0].a[0].arr);
sink (pc->b[0].a[0].arr);
strncpy (pc->b[0].a[1].arr, s, sizeof pc->b[0].a[1].arr);
sink (pc->b[0].a[1].arr);
strncpy (pc->b[0].a[2].arr, s, sizeof pc->b[0].a[2].arr);
sink (pc->b[0].a[2].arr);
}
void strncpy_str_nowarn_1 (struct C *pc, const char *s)
{
strncpy (pc->b[0].a[0].str, s, sizeof pc->b[0].a[0].str); /* { dg-bogus "\\\[-Wstringop-truncation" } */
pc->b[0].a[0].str[sizeof pc->b[0].a[0].str - 1] = 0;
}
void strncpy_str_warn_1 (struct C *pc, const char *s)
{
strncpy (pc->b[0].a[0].str, s, sizeof pc->b[0].a[0].str); /* { dg-warning "specified bound 3 equals destination size" } */
pc->b[1].a[0].str[sizeof pc->b[0].a[0].str - 1] = 0;
}
void strncpy_str_warn_2 (struct C *pc, const char *s)
{
strncpy (pc->b[0].a[0].str, s, sizeof pc->b[0].a[0].str); /* { dg-warning "specified bound 3 equals destination size" } */
pc->b[0].a[1].str[sizeof pc->b[0].a[0].str - 1] = 0;
}
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