ICE with name conflict in macro

[darkf]

With the following test code:

enum T {
        A(int),
        B(float)
}

macro_rules! test(
        ($e:expr) => (
                fn foo(t:T) -> int {
                        match t {
                                A(y) => $e,
                                B(y) => $e
                        }
                }
        )
)

test!(10 + (y as int))

fn main() {
        foo(A(20));
}

You get an ICE:

x.rs:10:6: 10:7 warning: unused variable: `y` [-W unused-variable (default)]
x.rs:10                                 A(y) => $e,
                                          ^
error: internal compiler error: trans_local_var: no llval for local/arg 62 found

[jdm]

Looks quite similar to #7911, which is probably #6000.

[sanxiyn]

After updating for removal of float and feature-gating of macros, I don't get ICE any more.

#[feature(macro_rules)];

enum T {
    A(int),
    B(uint)
}

macro_rules! test(
    ($e:expr) => (
        fn foo(t: T) -> int {
            match t {
                A(y) => $e,
                B(y) => $e
            }
        }
    )
)

test!(10 + (y as int))

fn main() {
    foo(A(20));
}

[huonw]

Almost certainly fixed by #9088.