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131
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1 // PR tree-optimization/71625 - missing strlen optimization on different
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2 // array initialization style
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3 //
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4 // Verify that strlen() call with a constant character array argument
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5 // initialized with non-constant elements isn't folded.
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6 //
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7 // { dg-do compile }
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8 // { dg-options "-O2 -fdump-tree-optimized" }
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9
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10
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11 extern const char c;
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12 const char a0[] = { 'a', 'b', 'c', c };
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13
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14 int len0 ()
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15 {
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16 return __builtin_strlen (a0);
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17 }
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18
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19 const char &ref = c;
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20 const char a1[] = { 'a', 'b', 'c', ref };
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21
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22 int len1 ()
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23 {
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24 return __builtin_strlen (a1);
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25 }
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26
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27 const char* const ptr = &c;
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28 const char a2[] = { 'a', 'b', 'c', *ptr };
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29
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30 int len2 ()
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31 {
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32 return __builtin_strlen (a2);
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33 }
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34
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35 // { dg-final { scan-tree-dump-times "strlen" 3 "optimized" } }
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