| /* Verify -Wstringop-overflow a with destination pointer pointing either |
| before the beginning or past the end of an object. |
| { dg-do compile } |
| { dg-options "-O -Wall -Wno-array-bounds -Wno-restrict" } */ |
| |
| typedef __SIZE_TYPE__ size_t; |
| |
| char* strcpy (char *, const char *); |
| |
| |
| extern char a[1]; |
| |
| volatile char *d; |
| |
| void cpy_si_1_max (int i, const char *s) |
| { |
| if (i < 1) i = 1; |
| d = strcpy (a + i, s); // { dg-warning "writing 1 or more bytes into a region of size 0" } |
| d = strcpy (a + i + 1, s); // { dg-warning "writing 1 or more bytes into a region of size 0" } |
| } |
| |
| void cpy_ui_1_max (unsigned i, const char *s) |
| { |
| if (i < 1) i = 1; |
| d = strcpy (a + i, s); // { dg-warning "writing 1 or more bytes into a region of size 0" } |
| d = strcpy (a + i + 1, s); // { dg-warning "writing 1 or more bytes into a region of size 0" "" { xfail { ! lp64 } } } |
| } |
| |
| void cpy_sl_1_max (long i, const char *s) |
| { |
| if (i < 1) i = 1; |
| d = strcpy (a + i, s); // { dg-warning "writing 1 or more bytes into a region of size 0" "" { target { ! ptr_eq_short } } } |
| d = strcpy (a + i + 1, s); // { dg-warning "writing 1 or more bytes into a region of size 0" "" { target { ! ptr_eq_short } } } |
| } |
| |
| void cpy_ul_1_max (unsigned long i, const char *s) |
| { |
| if (i < 1) i = 1; |
| |
| d = strcpy (a + i, s); // { dg-warning "writing 1 or more bytes into a region of size 0" "" { target { ! ptr_eq_short } } } |
| |
| /* Because of integer wraparound the offset's range is [1, 0] so |
| the overflow isn't diagnosed (yet). */ |
| d = strcpy (a + i + 1, s); // { dg-warning "writing 1 or more bytes into a region of size 0" "" { xfail *-*-* } } |
| } |
| |
| |
| void cpy_si_min_m1 (int i, const char *s) |
| { |
| if (i > -1) i = -1; |
| d = strcpy (a + i - 1, s); // { dg-warning "writing 1 or more bytes into a region of size 0" } |
| d = strcpy (a + i, s); // { dg-warning "writing 1 or more bytes into a region of size 0" } |
| d = strcpy (a + i + 2, s); |
| } |
| |
| void cpy_sl_min_m1 (long i, const char *s) |
| { |
| if (i > -1) i = -1; |
| d = strcpy (a + i - 1, s); // { dg-warning "writing 1 or more bytes into a region of size 0" "" { target { ! ptr_eq_short } } } |
| d = strcpy (a + i, s); // { dg-warning "writing 1 or more bytes into a region of size 0" "" { target { ! ptr_eq_short } } } |
| d = strcpy (a + i + 2, s); |
| } |