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annotate gcc/testsuite/gcc.dg/Wstringop-overflow-8.c @ 145:1830386684a0

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gcc-9.2.0
author anatofuz
date Thu, 13 Feb 2020 11:34:05 +0900
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145
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1 /* PR tree-optimization/79220 - missing -Wstringop-overflow= on a memcpy
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2 overflow with a small power-of-2 size
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3 { dg-do compile }
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4 { dg-options "-O2 -Wno-array-bounds -Wstringop-overflow" } */
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5
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6 extern void* memcpy (void*, const void*, __SIZE_TYPE__);
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7 extern void* memmove (void*, const void*, __SIZE_TYPE__);
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8 extern void* memset (void*, int, __SIZE_TYPE__);
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9
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10 char d[1];
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11
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12 void test_memcpy_lit_2 (void)
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13 {
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14 memcpy (d, "01", 2); /* { dg-warning "\\\[-Wstringop-overflow" } */
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15 }
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16
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17 void test_memcpy_lit_4 (void)
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18 {
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19 memcpy (d, "0123", 4); /* { dg-warning "\\\[-Wstringop-overflow" } */
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20 }
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21
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22 void test_memmove_lit_8 (void)
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23 {
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24 memmove (d, "01234567", 8); /* { dg-warning "\\\[-Wstringop-overflow" } */
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25 }
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26
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27
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28 void test_memcpy_ptr_2 (const void *s)
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29 {
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30 memcpy (d, s, 2); /* { dg-warning "\\\[-Wstringop-overflow" } */
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31 }
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32
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33 void test_memcpy_ptr_4 (const void *s)
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34 {
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35 memcpy (d, s, 4); /* { dg-warning "\\\[-Wstringop-overflow" } */
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36 }
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37
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38 void test_memcpy_ptr_8 (const void *s)
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39 {
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40 memcpy (d, s, 8); /* { dg-warning "\\\[-Wstringop-overflow" } */
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41 }
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42
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43
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44 void test_memmove_ptr (const void *s)
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45 {
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46 memmove (d, s, 8); /* { dg-warning "\\\[-Wstringop-overflow" } */
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47 }
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48
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49 void test_memset_2 (void)
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50 {
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51 memset (d, 0, 2); /* { dg-warning "\\\[-Wstringop-overflow" } */
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52 }
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53
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54 void test_memset_4 (void)
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55 {
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56 memset (d, 0, 4); /* { dg-warning "\\\[-Wstringop-overflow" } */
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57 }
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58
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59 void test_memset_8 (void)
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60 {
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61 memset (d, 0, 8); /* { dg-warning "\\\[-Wstringop-overflow" } */
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62 }