Viewing file:  c2x-attr-syntax-2.c (2.18 KB) -rw-r--r--
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/* Test C2x attribute syntax. Test ignored attributes diagnosed. */
/* { dg-do compile } */
/* { dg-options "-std=c2x -pedantic-errors" } */
/* A GNU attribute that is valid in some contexts, but should be
diagnosed in contexts where all attributes are ignored (attribute
declarations, except for fallthrough attributes, and
statements). */
#define CTX [[gnu::const]]
/* An attribute that is unknown, so ignored with a warning. */
#define UNK [[gnu::no_such_attribute(![!(!)!]!,;;)]]
CTX; /* { dg-warning "ignored" } */
UNK; /* { dg-warning "ignored" } */
UNK extern int a; /* { dg-warning "ignored" } */
extern int UNK a; /* { dg-warning "ignored" } */
extern int a UNK; /* { dg-warning "ignored" } */
int f () UNK; /* { dg-warning "ignored" } */
int f (void) UNK; /* { dg-warning "ignored" } */
int g (UNK int a); /* { dg-warning "ignored" } */
int g (int UNK a); /* { dg-warning "ignored" } */
int g (int a UNK); /* { dg-warning "ignored" } */
int g (UNK int); /* { dg-warning "ignored" } */
int g (int UNK); /* { dg-warning "ignored" } */
int g (int) UNK; /* { dg-warning "ignored" } */
int *UNK p; /* { dg-warning "ignored" } */
int b[3] UNK; /* { dg-warning "ignored" } */
int h (int () UNK); /* { dg-warning "ignored" } */
struct UNK s; /* { dg-warning "ignored" } */
union UNK u; /* { dg-warning "ignored" } */
struct UNK s2 { int a; }; /* { dg-warning "ignored" } */
union UNK u2 { int a; }; /* { dg-warning "ignored" } */
struct s3 { UNK int a; }; /* { dg-warning "ignored" } */
struct s4 { int UNK a; }; /* { dg-warning "ignored" } */
union u3 { UNK int a; }; /* { dg-warning "ignored" } */
union u4 { int UNK a; }; /* { dg-warning "ignored" } */
int z = sizeof (int UNK); /* { dg-warning "ignored" } */
enum UNK { E1 }; /* { dg-warning "ignored" } */
enum { E2 UNK }; /* { dg-warning "ignored" } */
enum { E3 UNK = 4 }; /* { dg-warning "ignored" } */
void
func (void) UNK { /* { dg-warning "ignored" } */
UNK int var; /* { dg-warning "ignored" } */
CTX { } /* { dg-warning "ignored" } */
CTX; /* { dg-warning "ignored" } */
CTX var = 1; /* { dg-warning "ignored" } */
CTX x: var = 2; /* { dg-warning "ignored" } */
for (UNK int zz = 1; zz < 10; zz++) ; /* { dg-warning "ignored" } */
}
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