48 lines
1.0 KiB
C
48 lines
1.0 KiB
C
/* Spurious uninitialized variable warnings.
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This one inspired by java/class.c:build_utf8_ref. */
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/* { dg-do compile } */
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/* { dg-options "-O -Wuninitialized" } */
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#include <stddef.h>
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struct tree
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{
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struct tree *car;
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struct tree *cdr;
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int type, data;
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};
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extern void *malloc(size_t);
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#define INTEGER_T 1
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#define PTR_T 2
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#define APPEND(TREE, LAST, TYPE, VALUE) \
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do { \
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struct tree *tmp = malloc (sizeof (struct tree)); \
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tmp->car = 0; tmp->cdr = 0; tmp->type = TYPE; \
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tmp->data = VALUE; \
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if (TREE->car) \
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LAST->cdr = tmp; \
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else \
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TREE->car = tmp; \
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LAST = tmp; \
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} while(0)
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struct tree *
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make_something(int a, int b, int c)
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{
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struct tree *rv;
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struct tree *field; /* { dg-bogus "field" "uninitialized variable warning" { xfail *-*-* } } */
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rv = malloc (sizeof (struct tree));
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rv->car = 0;
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APPEND(rv, field, INTEGER_T, a);
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APPEND(rv, field, PTR_T, b);
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APPEND(rv, field, INTEGER_T, c);
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return rv;
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}
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