58 lines
1.2 KiB
C
58 lines
1.2 KiB
C
/* Test C11 _Generic. Valid uses. */
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/* { dg-do run } */
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/* { dg-options "-std=c11 -pedantic-errors" } */
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_Noreturn extern void exit (int);
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_Noreturn extern void abort (void);
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void
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check (int n)
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{
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if (n)
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abort ();
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}
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int
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main (void)
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{
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int n = 0;
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check (_Generic (n++, int: 0));
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/* _Generic should not evaluate its argument. */
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check (n);
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check (_Generic (n, double: n++, default: 0));
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check (n);
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/* Qualifiers are removed for the purpose of type matching. */
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const int cn = 0;
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check (_Generic (cn, int: 0, default: n++));
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check (n);
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check (_Generic ((const int) n, int: 0, default: n++));
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check (n);
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/* Arrays decay to pointers. */
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int a[1];
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const int ca[1];
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check (_Generic (a, int *: 0, const int *: n++));
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check (n);
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check (_Generic (ca, const int *: 0, int *: n++));
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check (n);
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/* Functions decay to pointers. */
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extern void f (void);
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check (_Generic (f, void (*) (void): 0, default: n++));
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check (n);
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/* _Noreturn is not part of the function type. */
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check (_Generic (&abort, void (*) (void): 0, default: n++));
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check (n);
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/* Integer promotions do not occur. */
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short s;
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check (_Generic (s, short: 0, int: n++));
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check (n);
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exit (0);
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}
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