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annotate gcc/testsuite/gcc.dg/Walways-true-1.c @ 111:04ced10e8804

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gcc 7
author kono
date Fri, 27 Oct 2017 22:46:09 +0900
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111
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1 /* Test -Waddress for testing an address against NULL.
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2 Origin: Ian Lance Taylor <iant@google.com>. */
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3
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4 /* { dg-do compile } */
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5 /* { dg-options "-Waddress -fshow-column" } */
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6
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7 extern int foo (int);
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8
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9 int i;
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10
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11 void
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12 bar (int a)
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13 {
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14 lab:
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15 if (foo) /* { dg-warning "7:always evaluate as" "correct warning" } */
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16 foo (0);
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17 if (foo (1))
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18 ;
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19 if (&i) /* { dg-warning "7:always evaluate as" "correct warning" } */
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20 foo (2);
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21 if (i)
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22 foo (3);
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23 if (&a) /* { dg-warning "7:always evaluate as" "correct warning" } */
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24 foo (4);
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25 if (a)
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26 foo (5);
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27 if (&&lab) /* { dg-warning "7:always evaluate as" "correct warning" } */
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28 foo (6);
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29 if (foo == 0) /* { dg-warning "11:the comparison will always evaluate as 'false'" "correct warning" } */
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30 foo (7);
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31 if (foo (1) == 0)
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32 foo (8);
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33 if (&i == 0) /* { dg-warning "10:the comparison will always evaluate as 'false'" "correct warning" } */
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34 foo (9);
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35 if (i == 0)
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36 foo (10);
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37 if (&a == 0) /* { dg-warning "10:the comparison will always evaluate as 'false'" "correct warning" } */
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38 foo (11);
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39 if (a == 0)
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40 foo (12);
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41 if (&&lab == 0) /* { dg-warning "13:the comparison will always evaluate as 'false'" "correct warning" } */
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42 foo (13);
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43 if (0 == foo) /* { dg-warning "9:the comparison will always evaluate as 'false'" "correct warning" } */
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44 foo (14);
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45 if (0 == foo (1))
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46 foo (15);
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47 if (0 == &i) /* { dg-warning "9:the comparison will always evaluate as 'false'" "correct warning" } */
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48 foo (16);
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49 if (0 == i)
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50 foo (17);
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51 if (0 == &a) /* { dg-warning "9:the comparison will always evaluate as 'false'" "correct warning" } */
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52 foo (18);
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53 if (0 == a)
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54 foo (19);
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55 if (0 == &&lab) /* { dg-warning "9:the comparison will always evaluate as 'false'" "correct warning" } */
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56 foo (20);
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57 }