#zig build-obj {
--name test -fno-emit-bin
-Mroot=test.zig
#}

#write test.zig {
fn f(a: i32, a: i32) void {}
export fn entry() void {
    f(1, 2);
}
#}
#update
#check errors {
test.zig:1:14: error: redeclaration of function parameter 'a'
test.zig:1:6: note: previous declaration here
#}
