9b0ae75ecc
See [RFC](https://github.com/maurer/rust-rfcs/blob/patchable-function-entry/text/0000-patchable-function-entry.md) (yet to be numbered) TODO before submission: * Needs an RFC * Improve error reporting for malformed attributes
28 lines
982 B
Rust
28 lines
982 B
Rust
#![feature(patchable_function_entry)]
|
|
// compile-flags: -Z patchable-function-entry=15,10
|
|
|
|
#![crate_type = "lib"]
|
|
|
|
// This should have the default, as set by the compile flags
|
|
#[no_mangle]
|
|
pub fn foo() {}
|
|
|
|
// The attribute should override the compile flags
|
|
#[no_mangle]
|
|
#[patchable_function_entry(prefix(1), entry(2))]
|
|
pub fn bar() {}
|
|
|
|
// If we override an attribute to 0 or unset, the attribute should go away
|
|
#[no_mangle]
|
|
#[patchable_function_entry(entry(0))]
|
|
pub fn baz() {}
|
|
|
|
// CHECK: @foo() unnamed_addr #0
|
|
// CHECK: @bar() unnamed_addr #1
|
|
// CHECK: @baz() unnamed_addr #2
|
|
|
|
// CHECK: attributes #0 = { {{.*}}"patchable-function-entry"="5"{{.*}}"patchable-function-prefix"="10" {{.*}} }
|
|
// CHECK: attributes #1 = { {{.*}}"patchable-function-entry"="2"{{.*}}"patchable-function-prefix"="1" {{.*}} }
|
|
// CHECK-NOT: attributes #2 = { {{.*}}patchable-function-entry{{.*}} }
|
|
// CHECK-NOT: attributes #2 = { {{.*}}patchable-function-prefix{{.*}} }
|
|
// CHECK: attributes #2 = { {{.*}} }
|