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add test for allowing slice[slice.len..slice.len]

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This commit is contained in:
Andrew Kelley 2017-12-12 21:50:37 -05:00
parent d295279b16
commit 84619abe9f
1 changed files with 10 additions and 0 deletions
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10
test/cases/slice.zig
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@ -1,4 +1,5 @@
const assert = @import("std").debug.assert;
const mem = @import("std").mem;
const x = @intToPtr(&i32, 0x1000)[0..0x500];
const y = x[0x100..];
@ -15,3 +16,12 @@ test "slice child property" {
var slice = array[0..];
assert(@typeOf(slice).Child == i32);
}
test "debug safety lets us slice from len..len" {
var an_array = []u8{1, 2, 3};
assert(mem.eql(u8, sliceFromLenToLen(an_array[0..], 3, 3), ""));
}
fn sliceFromLenToLen(a_slice: []u8, start: usize, end: usize) -> []u8 {
return a_slice[start..end];
}