1 /* Exercise that -Warray-bounds is issued for out-of-bounds offsets
2 in calls to built-in functions.
3 { dg-do compile }
4 { dg-options "-O2 -Warray-bounds=2 -Wno-stringop-overflow -ftrack-macro-expansion=0" } */
5
6 #include "../gcc.dg/range.h"
7
8 #if __cplusplus
9 # define restrict __restrict
10 extern "C" {
11 #endif
12
13 extern void* memcpy (void* restrict, const void* restrict, size_t);
14 extern void* mempcpy (void* restrict, const void* restrict, size_t);
15 extern void* memmove (void*, const void*, size_t);
16
17 extern char* stpcpy (char* restrict, const char* restrict);
18
19 extern char* strcat (char* restrict, const char* restrict);
20 extern char* strcpy (char* restrict, const char* restrict);
21 extern char* strncpy (char* restrict, const char* restrict, size_t);
22
23 #if __cplusplus
24 } /* extern "C" */
25 #endif
26
27 struct MA { char a5[5], a7[7]; };
28
29 void sink (void*, ...);
30
test_memcpy_bounds_memarray_range(void)31 void test_memcpy_bounds_memarray_range (void)
32 {
33 #undef TM
34 #define TM(mem, dst, src, n) \
35 do { \
36 struct MA ma; \
37 sink (&ma); /* Initialize arrays. */ \
38 memcpy (dst, src, n); \
39 sink (&ma); \
40 } while (0)
41
42 ptrdiff_t j = SR (1, 2);
43
44 TM (ma.a5, ma.a5 + j, ma.a5, 1);
45 TM (ma.a5, ma.a5 + j, ma.a5, 3);
46 TM (ma.a5, ma.a5 + j, ma.a5, 5);
47 TM (ma.a5, ma.a5 + j, ma.a5, 7); /* { dg-warning "offset \\\[6, 8] from the object at .ma. is out of the bounds of referenced subobject .\(MA::\)?a5. with type .char ?\\\[5]. at offset 0" } */
48 TM (ma.a5, ma.a5 + j, ma.a5, 9); /* { dg-warning "offset \\\[6, 10] from the object at .ma. is out of the bounds of referenced subobject .\(MA::\)?a5. with type .char ?\\\[5]. at offset 0" } */
49 }
50
test_strcpy_bounds_memarray_range(void)51 void test_strcpy_bounds_memarray_range (void)
52 {
53 #undef TM
54 #define TM(a5init, a7init, dst, src) \
55 do { \
56 struct MA ma = { a5init, a7init }; \
57 strcpy (dst, src); \
58 sink (&ma); \
59 } while (0)
60
61 ptrdiff_t i = SR (1, 2);
62
63 TM ("0", "", ma.a5 + i, ma.a5);
64 TM ("01", "", ma.a5 + i, ma.a5);
65 TM ("012", "", ma.a5 + i, ma.a5);
66 TM ("0123", "", ma.a5 + i, ma.a5); /* { dg-warning "offset 6 from the object at .ma. is out of the bounds of referenced subobject .a5. with type .char\\\[5]. at offset 0" "strcpy" { xfail *-*-* } } */
67
68 #if __i386__ || __x86_64__
69 /* Disabled for non-x86 targets due to bug 83462. */
70 TM ("", "012345", ma.a7 + i, ma.a7); /* { dg-warning "offset 13 from the object at .ma. is out of the bounds of referenced subobject .\(MA::\)?a7. with type .char ?\\\[7]. at offset 5" "strcpy" { xfail { ! { i?86-*-* x86_64-*-* } } } } */
71 #endif
72
73 }
74