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111
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1 /* { dg-do run } */
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2 /* { dg-options "-O2 -fdump-tree-strlen" } */
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3
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4 #include "strlenopt.h"
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5
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6 /* Yes, there are people who write code like this. */
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7
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8 __attribute__((noinline, noclone)) char *
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9 foo (int r)
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10 {
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11 char buf[10] = "";
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12 strcat (buf, r ? "r" : "w");
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13 strcat (buf, "b");
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14 return strdup (buf);
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15 }
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16
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17 __attribute__((noinline, noclone)) char *
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18 bar (int r)
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19 {
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20 char buf[10] = {};
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21 strcat (buf, r ? "r" : "w");
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22 strcat (buf, "b");
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23 return strdup (buf);
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24 }
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25
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26 int
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27 main ()
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28 {
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29 char *q = foo (1);
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30 if (q != NULL)
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31 {
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32 if (strcmp (q, "rb"))
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33 abort ();
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34 free (q);
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35 }
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36 q = bar (0);
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37 if (q != NULL)
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38 {
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39 if (strcmp (q, "wb"))
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40 abort ();
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41 free (q);
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42 }
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43 return 0;
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44 }
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45
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145
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46 /* { dg-final { scan-tree-dump-times "strlen \\(" 0 "strlen1" } } */
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47 /* { dg-final { scan-tree-dump-times "strcpy \\(" 0 "strlen1" } } */
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48 /* { dg-final { scan-tree-dump-times "strcat \\(" 0 "strlen1" } } */
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49 /* { dg-final { scan-tree-dump-times "strchr \\(" 0 "strlen1" } } */
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50 /* { dg-final { scan-tree-dump-times "stpcpy \\(" 0 "strlen1" } } */
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