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152
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1 /* PR middle-end/93829 - bogus -Wstringop-overflow on memcpy of a struct
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2 with a pointer member from another with a long string
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3 { dg-do compile }
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4 { dg-options "-O2 -Wall" } */
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5
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6 extern void* memcpy (void*, const void*, __SIZE_TYPE__);
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7
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8 #define S40 "0123456789012345678901234567890123456789"
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9
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10 const char s40[] = S40;
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11
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12 struct S
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13 {
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14 const void *p, *q, *r;
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15 } s, sa[2];
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16
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17
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18 void test_lit_decl (void)
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19 {
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20 struct S t = { 0, S40, 0 };
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21
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22 memcpy (&s, &t, sizeof t); // { dg-bogus "-Wstringop-overflow" }
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23 }
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24
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25 void test_str_decl (void)
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26 {
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27 struct S t = { 0, s40, 0 };
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28
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29 memcpy (&s, &t, sizeof t); // { dg-bogus "-Wstringop-overflow" }
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30 }
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31
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32
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33 void test_lit_ssa (int i)
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34 {
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35 if (i < 1)
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36 i = 1;
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37 struct S *p = &sa[i];
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38 struct S t = { 0, S40, 0 };
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39
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40 memcpy (p, &t, sizeof t); // { dg-bogus "-Wstringop-overflow" }
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41 }
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42
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43 void test_str_ssa (int i)
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44 {
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45 if (i < 1)
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46 i = 1;
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47 struct S *p = &sa[i];
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48 struct S t = { 0, s40, 0 };
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49
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50 memcpy (p, &t, sizeof t); // { dg-bogus "-Wstringop-overflow" }
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51 }
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