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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. In GNU C, we need to consider
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4 __typeof__ and __alignof__ as well. __alignof__ always returns a
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5 constant, so static functions can always be used therein.
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6 __typeof__ evaluates its argument iff it has variably modified
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7 type. */
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8 /* Origin: Joseph Myers <jsm@polyomino.org.uk> */
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9 /* { dg-do compile } */
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10 /* { dg-options "-O2 -std=gnu99 -pedantic-errors" } */
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11
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12 /* __alignof__, OK. */
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13 static int f0(void);
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14 void g0(void) { __alignof__(f0()); }
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15
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16 /* __typeof__ not variably modified, OK. */
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17 static int f1(void);
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18 void g1(void) { __typeof__(f1()) x; }
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19
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20 /* __typeof__ variably modified, not OK. */
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21 static int f2(void); /* { dg-error "used but never defined" } */
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22 void g2(void) { __typeof__(int [f2()]) x; }
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23
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24 /* __typeof__ variably modified, not OK. */
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25 static int f3(void); /* { dg-error "used but never defined" } */
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26 void g3(void) { __typeof__(int (*)[f3()]) x; }
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27
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28 /* Integer sizeof of VM typeof, OK. */
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29 static int f4(void);
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30 void g4(void) { sizeof(__typeof__(int (*)[f3()])); }
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