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.gitattributes
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anonymous-higher-ranked-lifetime.rs
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artificial-block.rs
as-precedence.rs
assign-assign.rs
assign-imm-local-twice.rs
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assoc-lang-items.rs
assoc-lang-items.stderr
assoc-oddities-3.rs
associated-path-shl.rs
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atomic-from-mut-not-available.rs
atomic-from-mut-not-available.stderr
attempted-access-non-fatal.rs
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attr-bad-crate-attr.rs
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attr-usage-inline.rs
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attrs-resolution.rs
augmented-assignments-feature-gate-cross.rs
augmented-assignments-rpass.rs
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auto-ref-slice-plus-ref.rs
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autoderef-full-lval.rs
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can-copy-pod.rs
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class-method-missing.stderr
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cleanup-rvalue-scopes-cf.rs
cleanup-rvalue-scopes-cf.stderr
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crate-name-mismatch.stderr
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error-festival.stderr
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integral-indexing.stderr
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intrinsics-always-extern.stderr
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issue-13560.rs
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lazy-and-or.rs
lexical-scopes.rs
lexical-scopes.stderr
lexical-scoping.rs
link-section.rs
lint-group-denied-lint-allowed.rs
lint-group-forbid-always-trumps-cli.rs
lint-group-forbid-always-trumps-cli.stderr
lint-unknown-lints-at-crate-level.rs
list.rs
log-err-phi.rs
log-knows-the-names-of-variants.rs
log-poly.rs
logging-only-prints-once.rs
loud_ui.rs
main-wrong-location.rs
main-wrong-location.stderr
main-wrong-type.rs
main-wrong-type.stderr
max-min-classes.rs
maximal_mir_to_hir_coverage.rs
maybe-bounds.rs
maybe-bounds.stderr
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minus-string.stderr
missing_debug_impls.rs
missing_debug_impls.stderr
mod-subitem-as-enum-variant.rs
mod-subitem-as-enum-variant.stderr
module-macro_use-arguments.rs
module-macro_use-arguments.stderr
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msvc-data-only.rs
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nested-cfg-attrs.stderr
nested-class.rs
nested-ty-params.rs
nested-ty-params.stderr
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new-import-syntax.rs
new-style-constants.rs
new-unicode-escapes.rs
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newtype.rs
no-capture-arc.rs
no-capture-arc.stderr
no-core-1.rs
no-core-2.rs
no-link-unknown-crate.rs
no-link-unknown-crate.stderr
no-patterns-in-args-2.rs
no-patterns-in-args-2.stderr
no-patterns-in-args-macro.rs
no-patterns-in-args-macro.stderr
no-patterns-in-args.rs
no-patterns-in-args.stderr
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no-reuse-move-arc.stderr
no-send-res-ports.rs
no-send-res-ports.stderr
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no_crate_type.rs
no_crate_type.stderr
no_send-enum.rs
no_send-enum.stderr
no_send-rc.rs
no_send-rc.stderr
no_share-enum.rs
no_share-enum.stderr
no_share-struct.rs
no_share-struct.stderr
noexporttypeexe.rs
noexporttypeexe.stderr
non-constant-expr-for-arr-len.rs
non-constant-expr-for-arr-len.stderr
non-copyable-void.rs
non-copyable-void.stderr
non-fmt-panic.fixed
non-fmt-panic.rs
non-fmt-panic.stderr
noncopyable-class.rs
noncopyable-class.stderr
nonscalar-cast.fixed
nonscalar-cast.rs
nonscalar-cast.stderr
not-clone-closure.rs
not-clone-closure.stderr
not-copy-closure.rs
not-copy-closure.stderr
not-enough-arguments.rs
not-enough-arguments.stderr
nul-characters.rs
nullable-pointer-iotareduction.rs
nullable-pointer-size.rs
object-pointer-types.rs
object-pointer-types.stderr
objects-coerce-freeze-borrored.rs
occurs-check-2.rs
occurs-check-2.stderr
occurs-check-3.rs
occurs-check-3.stderr
occurs-check.rs
occurs-check.stderr
once-cant-call-twice-on-heap.rs
once-cant-call-twice-on-heap.stderr
oom_unwind.rs
op-assign-builtins-by-ref.rs
opeq.rs
opt-in-copy.rs
opt-in-copy.stderr
optimization-fuel-0.rs
optimization-fuel-0.stderr
optimization-fuel-1.rs
optimization-fuel-1.stderr
optimization-remark.rs
order-dependent-cast-inference.rs
order-dependent-cast-inference.stderr
orphan-check-diagnostics.rs
orphan-check-diagnostics.stderr
osx-frameworks.rs
osx-frameworks.stderr
out-pointer-aliasing.rs
output-slot-variants.rs
over-constrained-vregs.rs
panic-while-printing.rs
panic_implementation-closures.rs
paren-span.rs
paren-span.stderr
partialeq_help.rs
partialeq_help.stderr
path-lookahead.fixed
path-lookahead.rs
path-lookahead.stderr
path.rs
paths-containing-nul.rs
phantom-auto-trait.rs
phantom-auto-trait.stderr
point-to-type-err-cause-on-impl-trait-return-2.rs
point-to-type-err-cause-on-impl-trait-return-2.stderr
pptypedef.rs
pptypedef.stderr
primitive-binop-lhs-mut.rs
print-stdout-eprint-stderr.rs
project-cache-issue-31849.rs
ptr-coercion-rpass.rs
ptr-coercion.rs
ptr-coercion.stderr
query-visibility.rs
range_inclusive.rs
raw-str.rs
README.md
realloc-16687.rs
reassign-ref-mut.rs
reassign-ref-mut.stderr
reexport-test-harness-main.rs
reify-intrinsic.rs
reify-intrinsic.stderr
removing-extern-crate.fixed
removing-extern-crate.rs
removing-extern-crate.stderr
resource-assign-is-not-copy.rs
resource-destruct.rs
ret-bang.rs
ret-non-nil.rs
ret-non-nil.stderr
return-disjoint-regions.rs
return-disjoint-regions.stderr
return-nil.rs
rustc-error.rs
rustc-error.stderr
rustc-rust-log.rs
seq-args.rs
seq-args.stderr
shadow-bool.rs
shadowed-use-visibility.rs
short-error-format.rs
short-error-format.stderr
simple_global_asm.rs
sized-borrowed-pointer.rs
sized-cycle-note.rs
sized-cycle-note.stderr
sized-owned-pointer.rs
sse2.rs
stable-addr-of.rs
std-backtrace.rs
std-uncopyable-atomics.rs
std-uncopyable-atomics.stderr
stdio-is-blocking.rs
stmt_expr_attrs_no_feature.rs
stmt_expr_attrs_no_feature.stderr
string-box-error.rs
struct-ctor-mangling.rs
suggest-null-ptr.fixed
suggest-null-ptr.rs
suggest-null-ptr.stderr
super-at-top-level.rs
super-at-top-level.stderr
super-fast-paren-parsing.rs
super.rs
svh-add-nothing.rs
swap-1.rs
swap-overlapping.rs
switched-expectations.rs
switched-expectations.stderr
syntax-extension-minor.rs
tag-type-args.rs
tag-type-args.stderr
tag-variant-cast-non-nullary.fixed
tag-variant-cast-non-nullary.rs
tag-variant-cast-non-nullary.stderr
tail-call-arg-leak.rs
tail-cps.rs
tail-typeck.rs
tail-typeck.stderr
tool_lints-fail.rs
tool_lints-fail.stderr
tool_lints-rpass.rs
tool_lints.rs
tool_lints.stderr
tool_lints_2018_preview.rs
trailing-comma.rs
trait-impl-bound-suggestions.fixed
trait-impl-bound-suggestions.rs
trait-impl-bound-suggestions.stderr
trait-method-number-parameters.rs
trait-method-number-parameters.stderr
transmute-equal-assoc-types.rs
transmute-non-immediate-to-immediate.rs
trivial_casts-rpass.rs
trivial_casts-rpass.stderr
try-from-int-error-partial-eq.rs
try-operator-hygiene.rs
try-operator.rs
tydesc-name.rs
type-id-higher-rank-2.rs
type-namespace.rs
type-param-constraints.rs
type-param.rs
type-ptr.rs
type-use-i1-versus-i8.rs
type_length_limit.polonius.stderr
type_length_limit.rs
type_length_limit.stderr
typeid-intrinsic.rs
typestate-multi-decl.rs
unconstrained-none.rs
unconstrained-none.stderr
unconstrained-ref.rs
unconstrained-ref.stderr
underscore-ident-matcher.rs
underscore-ident-matcher.stderr
underscore-lifetimes.rs
underscore-method-after-integer.rs
unevaluated_fixed_size_array_len.rs
unevaluated_fixed_size_array_len.stderr
uninit-empty-types.rs
unit.rs
unknown-language-item.rs
unknown-language-item.stderr
unknown-lint-tool-name.rs
unknown-lint-tool-name.stderr
unknown-llvm-arg.rs
unknown-llvm-arg.stderr
unknown-tool-name.rs
unknown-tool-name.stderr
unnamed_argument_mode.rs
unop-move-semantics.rs
unop-move-semantics.stderr
unop-neg-bool.rs
unop-neg-bool.stderr
unreachable-code-1.rs
unreachable-code.rs
unsigned-literal-negation.rs
unsigned-literal-negation.stderr
unused-move-capture.rs
unused-move.rs
unwind-no-uwtable.rs
use-import-export.rs
use-keyword-2.rs
use-module-level-int-consts.rs
use-nested-groups.rs
used.rs
used.stderr
using-target-feature-unstable.rs
usize-generic-argument-parent.rs
usize-generic-argument-parent.stderr
utf8-bom.rs
utf8_idents.rs
wait-forked-but-failed-child.rs
walk-struct-literal-with.rs
walk-struct-literal-with.stderr
weak-new-uninhabited-issue-48493.rs
weird-exit-code.rs
weird-exprs.rs
windows-subsystem-invalid.rs
windows-subsystem-invalid.stderr
write-fmt-errors.rs
writing-to-immutable-vec.rs
writing-to-immutable-vec.stderr
wrong-hashset-issue-42918.rs

README.md

UI Tests

This folder contains rustc's UI tests.

Test Directives (Headers)

Typically, a UI test will have some test directives / headers which are special comments that tell compiletest how to build and intepret a test.

As part of an on-going effort to rewrite compiletest (see https://github.com/rust-lang/compiler-team/issues/536), a major change proposal to change legacy compiletest-style headers // <directive> to ui_test-style headers //@ <directive> was accepted (see https://github.com/rust-lang/compiler-team/issues/512.

An example directive is ignore-test. In legacy compiletest style, the header would be written as

// ignore-test

but in ui_test style, the header would be written as

//@ ignore-test

compiletest is changed to accept only //@ directives for UI tests (currently), and will reject and report an error if it encounters any comments // <content> that may be parsed as an legacy compiletest-style test header. To fix this, you should migrate to the ui_test-style header //@ <content>.