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/* Portable assumptions */
/* { dg-do compile } */
/* { dg-options "-std=c2x" } */
[[gnu::__assume__ (1)]] void f1 (void); /* { dg-warning "'assume' attribute not followed by ';'" } */
/* { dg-warning "'assume' attribute ignored" "" { target *-*-* } .-1 } */
typedef int intx [[gnu::assume (1)]]; /* { dg-warning "'assume' attribute ignored" } */
[[__gnu__::assume (1)]]; /* { dg-warning "'assume' attribute at top level" } */
__attribute__((assume (1))) void f1b ();/* { dg-warning "'assume' attribute not followed by ';'" } */
/* { dg-warning "'assume' attribute ignored" "" { target *-*-* } .-1 } */
typedef int inty __attribute__((assume (1))); /* { dg-warning "'assume' attribute ignored" } */
void
foo ()
{
int i;
[[gnu::assume]]; /* { dg-error "wrong number of arguments specified for 'assume' attribute" } */
/* { dg-message "expected 1, found 0" "" { target *-*-* } .-1 } */
[[gnu::__assume__ ()]]; /* { dg-error "parentheses must be omitted if attribute argument list is empty" } */
/* { dg-error "wrong number of arguments specified for 'assume' attribute" "" { target *-*-* } .-1 } */
/* { dg-message "expected 1, found 0" "" { target *-*-* } .-2 } */
[[gnu::assume (1, 1)]]; /* { dg-error "wrong number of arguments specified for 'assume' attribute" } */
/* { dg-message "expected 1, found 2" "" { target *-*-* } .-1 } */
[[gnu::assume (1)]] i = 1; /* { dg-warning "'assume' attribute ignored" } */
[[gnu::assume (i = 1)]]; /* { dg-error "expected" } */
/* { dg-warning "'assume' attribute ignored" "" { target *-*-* } .-1 } */
__attribute__((assume)); /* { dg-error "wrong number of arguments specified for 'assume' attribute" } */
/* { dg-message "expected 1, found 0" "" { target *-*-* } .-1 } */
__attribute__((assume ())); /* { dg-error "wrong number of arguments specified for 'assume' attribute" } */
/* { dg-message "expected 1, found 0" "" { target *-*-* } .-1 } */
__attribute__((assume (1, 1))); /* { dg-error "wrong number of arguments specified for 'assume' attribute" } */
/* { dg-message "expected 1, found 2" "" { target *-*-* } .-1 } */
__attribute__((assume (i = 1))); /* { dg-error "expected" } */
}
int
f2 (int x)
{
__asm ("" : "+r" (x));
return x;
}
int
f3 (int x)
{
[[gnu::assume (f2 (42) == 42)]];
return x;
}
int
f3a (int x)
{
__attribute__((assume (f2 (42) == 42)));
return x;
}
struct S {};
int
f4 ()
{
struct S s;
[[gnu::assume (s)]]; /* { dg-error "used struct type value where scalar is required" } */
__attribute__((assume (s))); /* { dg-error "used struct type value where scalar is required" } */
return 0;
}
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