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111
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1 /* Test declaration specifiers. Test empty declarations. Test with
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2 no special options. */
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3 /* Origin: Joseph Myers <jsm@polyomino.org.uk> */
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4 /* { dg-do compile } */
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5 /* { dg-options "" } */
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6
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7 /* If a declaration does not declare a declarator, it must declare a
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8 tag or the members of an enumeration, and must only contain one
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9 type specifier. */
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10
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11 typedef int T;
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12
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13 struct s0;
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14 union u0;
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15 enum e0; /* A GNU extension. */
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16 enum { E0 };
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17 enum e1 { E1 };
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18
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19 /* Not declaring anything (pedwarns). */
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20 struct { int a; }; /* { dg-warning "unnamed struct/union that defines no instances" } */
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21 int; /* { dg-warning "useless type name in empty declaration" } */
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22 long; /* { dg-warning "useless type name in empty declaration" } */
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23 T; /* { dg-warning "useless type name in empty declaration" } */
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24 static const; /* { dg-warning "useless storage class specifier in empty declaration" } */
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25 /* { dg-warning "empty declaration" "static const" { target *-*-* } .-1 } */
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26 union { long b; }; /* { dg-warning "unnamed struct/union that defines no instances" } */
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27
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28 /* Multiple type names (errors). */
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29 struct s1 int; /* { dg-error "two or more data types in declaration specifiers" } */
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30 char union u1; /* { dg-error "two or more data types in declaration specifiers" } */
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31 /* { dg-warning "useless type name in empty declaration" "char union" { target *-*-* } .-1 } */
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32 double enum { E2 }; /* { dg-error "two or more data types in declaration specifiers" } */
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33 /* { dg-warning "useless type name in empty declaration" "double enum" { target *-*-* } .-1 } */
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34 T struct s2; /* { dg-error "two or more data types in declaration specifiers" } */
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35 /* { dg-warning "useless type name in empty declaration" "T struct" { target *-*-* } .-1 } */
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36 long union u2; /* { dg-error "two or more data types in declaration specifiers" } */
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37 /* { dg-warning "useless type name in empty declaration" "empty" { target *-*-* } .-1 } */
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38 struct s3 short; /* { dg-error "two or more data types in declaration specifiers" } */
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39 union u3 signed; /* { dg-error "two or more data types in declaration specifiers" } */
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40 unsigned struct s4; /* { dg-error "two or more data types in declaration specifiers" } */
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41 /* { dg-warning "useless type name in empty declaration" "empty" { target *-*-* } .-1 } */
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42 _Complex enum { E3 }; /* { dg-error "two or more data types in declaration specifiers" } */
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43 /* { dg-warning "useless type name in empty declaration" "empty" { target *-*-* } .-1 } */
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