36 lines
1.2 KiB
C
36 lines
1.2 KiB
C
/* It is a constraint violation for a static function to be declared
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but not defined if it is used except in a sizeof expression whose
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result is an integer constant. The use of the function simply
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being unevaluated is not enough. */
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/* Origin: Joseph Myers <jsm@polyomino.org.uk> */
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/* { dg-do compile } */
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/* { dg-options "-O2 -std=iso9899:1999 -pedantic-errors" } */
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/* Constraint violation (trivial case, where function is used). */
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static void f0(void); /* { dg-error "used but never defined" } */
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void g0(void) { f0(); }
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/* Constraint violation. */
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static void f1(void); /* { dg-error "used but never defined" } */
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void g1(void) { if (0) { f1(); } }
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/* Constraint violation. */
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static int f2(void); /* { dg-error "used but never defined" } */
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void g2(void) { 0 ? f2() : 0; }
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/* OK. */
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static int f3(void);
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void g3(void) { sizeof(f3()); }
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/* OK (VM type, not VLA). */
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static int f4(void);
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void g4(void) { sizeof(int (*)[f4()]); }
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/* Constraint violation (VLA). */
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static int f5(void); /* { dg-error "used but never defined" "VLA" } */
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void g5(void) { sizeof(int [0 ? f5() : 1]); }
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/* OK (non-constant sizeof inside constant sizeof). */
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static int f6(void);
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void g6(void) { sizeof(sizeof(int [f6()])); }
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