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152
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1 #include <stdio.h>
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2
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3 extern int foo ();
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4 extern void bar ();
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5
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6 /* Verify that only significant edges are reported. */
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7
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8 void test_1 (const char *path, int flag)
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9 {
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10 FILE *fp = fopen (path, "r");
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11
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12 if (!fp) /* { dg-message "when 'fp' is non-NULL" } */
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13 return;
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14
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15 /* We shouldn't report this control flow. */
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16 while (foo ()) /* { dg-bogus "" } */
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17 bar ();
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18
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19 if (flag) /* { dg-message "when 'flag == 0'" "branch event" } */
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20 fclose (fp); /* { dg-bogus "leak" "warning at wrong location" { xfail *-*-* } .-1 } */
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21 } /* { dg-warning "leak of FILE 'fp'" "warning" { xfail *-*-* } } */
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22 // TODO(xfail): location of leak message ought to be on closing brace
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23
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24 void test_2 (const char *path, int flag)
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25 {
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26 FILE *fp = fopen (path, "r");
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27
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28 /* We shouldn't report this control flow. */
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29 if (foo ()) /* { dg-bogus "" } */
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30 bar ();
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31 else
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32 bar ();
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33
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34 if (flag) /* { dg-message "when 'flag == 0'" } */
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35 fclose (fp);
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36 } /* { dg-warning "leak of FILE 'fp'" } */
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37
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38 static void __attribute__((noinline))
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39 called_by_test_3 (int flag)
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40 {
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41 if (flag)
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42 foo ();
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43 }
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44
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45 void test_3 (const char *path, int flag)
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46 {
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47 FILE *fp = fopen (path, "r");
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48
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49 /* We shouldn't report the call/return here. */
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50 called_by_test_3 (flag); /* { dg-bogus "" } */
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51
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52 if (flag) /* { dg-message "when 'flag == 0'" } */
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53 fclose (fp);
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54 } /* { dg-warning "leak of FILE 'fp'" } */
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