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131
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1 /* Exercise that -Warray-bounds is issued for out-of-bounds offsets
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2 in calls to built-in functions.
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3 { dg-do compile }
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4 { dg-options "-O2 -Warray-bounds=2 -Wno-stringop-overflow -ftrack-macro-expansion=0" } */
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5
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6 #include "../gcc.dg/range.h"
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7
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8 #if __cplusplus
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9 # define restrict __restrict
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10 extern "C" {
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11 #endif
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12
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13 extern void* memcpy (void* restrict, const void* restrict, size_t);
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14 extern void* mempcpy (void* restrict, const void* restrict, size_t);
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15 extern void* memmove (void*, const void*, size_t);
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16
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17 extern char* stpcpy (char* restrict, const char* restrict);
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18
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19 extern char* strcat (char* restrict, const char* restrict);
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20 extern char* strcpy (char* restrict, const char* restrict);
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21 extern char* strncpy (char* restrict, const char* restrict, size_t);
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22
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23 #if __cplusplus
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24 } /* extern "C" */
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25 #endif
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26
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27 struct MA { char a5[5], a7[7]; };
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28
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29 void sink (void*, ...);
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30
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31 void test_memcpy_bounds_memarray_range (void)
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32 {
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33 #undef TM
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34 #define TM(mem, dst, src, n) \
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35 do { \
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36 struct MA ma; \
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37 sink (&ma); /* Initialize arrays. */ \
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38 memcpy (dst, src, n); \
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39 sink (&ma); \
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40 } while (0)
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41
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42 ptrdiff_t j = SR (1, 2);
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43
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44 TM (ma.a5, ma.a5 + j, ma.a5, 1);
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45 TM (ma.a5, ma.a5 + j, ma.a5, 3);
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46 TM (ma.a5, ma.a5 + j, ma.a5, 5);
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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" } */
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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" } */
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49 }
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50
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51 void test_strcpy_bounds_memarray_range (void)
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52 {
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53 #undef TM
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54 #define TM(a5init, a7init, dst, src) \
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55 do { \
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56 struct MA ma = { a5init, a7init }; \
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57 strcpy (dst, src); \
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58 sink (&ma); \
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59 } while (0)
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60
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61 ptrdiff_t i = SR (1, 2);
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62
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63 TM ("0", "", ma.a5 + i, ma.a5);
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64 TM ("01", "", ma.a5 + i, ma.a5);
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65 TM ("012", "", ma.a5 + i, ma.a5);
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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 *-*-* } } */
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67
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68 #if __i386__ || __x86_64__
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69 /* Disabled for non-x86 targets due to bug 83462. */
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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-*-* } } } } */
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71 #endif
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72
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73 }
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