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111
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1 /* It is a constraint violation for a static function to be declared
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2 but not defined if it is used except in a sizeof expression whose
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3 result is an integer constant. The use of the function simply
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4 being unevaluated is not enough. */
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5 /* Origin: Joseph Myers <jsm@polyomino.org.uk> */
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6 /* { dg-do compile } */
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7 /* { dg-options "-O2 -std=iso9899:1999 -pedantic-errors" } */
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8
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9 /* Constraint violation (trivial case, where function is used). */
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10 static void f0(void); /* { dg-error "used but never defined" } */
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11 void g0(void) { f0(); }
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12
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13 /* Constraint violation. */
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14 static void f1(void); /* { dg-error "used but never defined" } */
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15 void g1(void) { if (0) { f1(); } }
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16
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17 /* Constraint violation. */
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18 static int f2(void); /* { dg-error "used but never defined" } */
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19 void g2(void) { 0 ? f2() : 0; }
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20
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21 /* OK. */
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22 static int f3(void);
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23 void g3(void) { sizeof(f3()); }
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24
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25 /* OK (VM type, not VLA). */
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26 static int f4(void);
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27 void g4(void) { sizeof(int (*)[f4()]); }
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28
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29 /* Constraint violation (VLA). */
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30 static int f5(void); /* { dg-error "used but never defined" "VLA" } */
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31 void g5(void) { sizeof(int [0 ? f5() : 1]); }
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32
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33 /* OK (non-constant sizeof inside constant sizeof). */
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34 static int f6(void);
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35 void g6(void) { sizeof(sizeof(int [f6()])); }
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