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111
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1 /* Spurious uninitialized variable warnings.
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2 This one inspired by java/class.c:build_utf8_ref. */
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3
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4 /* { dg-do compile } */
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5 /* { dg-options "-O -Wuninitialized" } */
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6
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7 #include <stddef.h>
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8
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9 struct tree
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10 {
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11 struct tree *car;
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12 struct tree *cdr;
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13 int type, data;
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14 };
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15
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16 extern void *malloc(size_t);
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17
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18 #define INTEGER_T 1
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19 #define PTR_T 2
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20
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21 #define APPEND(TREE, LAST, TYPE, VALUE) \
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22 do { \
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23 struct tree *tmp = malloc (sizeof (struct tree)); \
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24 tmp->car = 0; tmp->cdr = 0; tmp->type = TYPE; \
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25 tmp->data = VALUE; \
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26 if (TREE->car) \
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27 LAST->cdr = tmp; \
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28 else \
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29 TREE->car = tmp; \
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30 LAST = tmp; \
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31 } while(0)
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32
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33 struct tree *
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34 make_something(int a, int b, int c)
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35 {
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36 struct tree *rv;
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37 struct tree *field;
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38
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39 rv = malloc (sizeof (struct tree));
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40 rv->car = 0;
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41
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42 APPEND(rv, field, INTEGER_T, a); /* { dg-bogus "field" "uninitialized variable warning" } */
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43 APPEND(rv, field, PTR_T, b);
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44 APPEND(rv, field, INTEGER_T, c);
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45
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46 return rv;
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47 }
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