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checker: add an interface check for mutability, fixes #1081, fixes #7038 (#11963)

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This commit is contained in:
Alexander Ivanov
2021-10-11 15:41:31 +03:00
committed by GitHub
parent d0c961ebc0
commit 0386f2bbea
40 changed files with 219 additions and 92 deletions
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4
vlib/io/io_test.v
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@@ -30,12 +30,12 @@ fn (mut w Writ) write(buf []byte) ?int {
}
fn test_copy() {
src := Buf{
mut src := Buf{
bytes: 'abcdefghij'.repeat(10).bytes()
}
mut dst := Writ{
bytes: []byte{}
}
io.cp(src, mut dst) or { assert false }
io.cp(mut src, mut dst) or { assert false }
assert dst.bytes == src.bytes
}