2018-05-15 Richard Biener <rguenther@suse.de>
[official-gcc.git] / gcc / testsuite / gcc.dg / declspec-5.c
blobf7f80bf8b102fdd6a371ab159e4d95539191c179
1 /* Test declaration specifiers. Test empty declarations. Test with
2 -pedantic. */
3 /* Origin: Joseph Myers <jsm@polyomino.org.uk> */
4 /* { dg-do compile } */
5 /* { dg-options "-std=gnu89 -pedantic" } */
7 /* If a declaration does not declare a declarator, it must declare a
8 tag or the members of an enumeration, and must only contain one
9 type specifier. */
11 typedef int T;
13 struct s0;
14 union u0;
15 enum e0; /* { dg-warning "ISO C forbids forward references" } */
16 enum { E0 };
17 enum e1 { E1 };
19 /* Not declaring anything (pedwarns). */
20 struct { int a; }; /* { dg-warning "unnamed struct/union that defines no instances" } */
21 int; /* { dg-warning "useless type name in empty declaration" } */
22 long; /* { dg-warning "useless type name in empty declaration" } */
23 T; /* { dg-warning "useless type name in empty declaration" } */
24 static const; /* { dg-warning "useless storage class specifier in empty declaration" } */
25 /* { dg-warning "empty declaration" "static const" { target *-*-* } .-1 } */
26 union { long b; }; /* { dg-warning "unnamed struct/union that defines no instances" } */
28 /* Multiple type names (errors). */
29 struct s1 int; /* { dg-error "two or more data types in declaration specifiers" } */
30 char union u1; /* { dg-error "two or more data types in declaration specifiers" } */
31 /* { dg-warning "useless type name in empty declaration" "char union" { target *-*-* } .-1 } */
32 double enum { E2 }; /* { dg-error "two or more data types in declaration specifiers" } */
33 /* { dg-warning "useless type name in empty declaration" "double enum" { target *-*-* } .-1 } */
34 T struct s2; /* { dg-error "two or more data types in declaration specifiers" } */
35 /* { dg-warning "useless type name in empty declaration" "T struct" { target *-*-* } .-1 } */
36 long union u2; /* { dg-error "two or more data types in declaration specifiers" } */
37 /* { dg-warning "useless type name in empty declaration" "empty" { target *-*-* } .-1 } */
38 struct s3 short; /* { dg-error "two or more data types in declaration specifiers" } */
39 union u3 signed; /* { dg-error "two or more data types in declaration specifiers" } */
40 unsigned struct s4; /* { dg-error "two or more data types in declaration specifiers" } */
41 /* { dg-warning "useless type name in empty declaration" "empty" { target *-*-* } .-1 } */
42 _Complex enum { E3 }; /* { dg-error "two or more data types in declaration specifiers" } */
43 /* { dg-warning "useless type name in empty declaration" "empty" { target *-*-* } .-1 } */
44 /* { dg-warning "ISO C90 does not support complex types" "C90" { target *-*-* } .-2 } */
45 /* { dg-warning "ISO C does not support plain 'complex' meaning 'double complex'" "ISO C" { target *-*-* } .-3 } */