Auto merge of rust-lang#9117 - Jarcho:unsafe_block_closure, r=giraffate

bors · bors · commit 48e527e4bde3 · 2022-07-05T00:20:33.000Z
Fix `undocumented_unsafe_blocks` in closures fixes rust-lang#9114 changelog: Fix `undocumented_unsafe_blocks` not checking for comments before the start of a closure
diff --git a/clippy_lints/src/undocumented_unsafe_blocks.rs b/clippy_lints/src/undocumented_unsafe_blocks.rs
@@ -265,14 +265,28 @@ fn span_from_macro_expansion_has_safety_comment(cx: &LateContext<'_>, span: Span
     }
 }
 
+fn get_body_search_span(cx: &LateContext<'_>) -> Option<Span> {
+    let body = cx.enclosing_body?;
+    let map = cx.tcx.hir();
+    let mut span = map.body(body).value.span;
+    for (_, node) in map.parent_iter(body.hir_id) {
+        match node {
+            Node::Expr(e) => span = e.span,
+            Node::Block(_) | Node::Arm(_) | Node::Stmt(_) | Node::Local(_) => (),
+            _ => break,
+        }
+    }
+    Some(span)
+}
+
 fn span_in_body_has_safety_comment(cx: &LateContext<'_>, span: Span) -> bool {
     let source_map = cx.sess().source_map();
     let ctxt = span.ctxt();
     if ctxt == SyntaxContext::root()
-        && let Some(body) = cx.enclosing_body
+        && let Some(search_span) = get_body_search_span(cx)
     {
         if let Ok(unsafe_line) = source_map.lookup_line(span.lo())
-            && let Some(body_span) = walk_span_to_context(cx.tcx.hir().body(body).value.span, SyntaxContext::root())
+            && let Some(body_span) = walk_span_to_context(search_span, SyntaxContext::root())
             && let Ok(body_line) = source_map.lookup_line(body_span.lo())
             && Lrc::ptr_eq(&unsafe_line.sf, &body_line.sf)
             && let Some(src) = unsafe_line.sf.src.as_deref()
diff --git a/tests/ui/undocumented_unsafe_blocks.rs b/tests/ui/undocumented_unsafe_blocks.rs
@@ -250,6 +250,11 @@ fn from_proc_macro() {
     proc_macro_unsafe::unsafe_block!(token);
 }
 
+fn in_closure(x: *const u32) {
+    // Safety: reason
+    let _ = || unsafe { *x };
+}
+
 // Invalid comments
 
 #[rustfmt::skip]
@@ -351,9 +356,9 @@ mod unsafe_impl_smoke_test {
 
     #[rustfmt::skip]
     mod sub_mod2 {
-        // 
+        //
         // SAFETY: ok
-        // 
+        //
 
         unsafe impl B for (u32) {}
         unsafe trait B {}
diff --git a/tests/ui/undocumented_unsafe_blocks.stderr b/tests/ui/undocumented_unsafe_blocks.stderr
@@ -1,5 +1,5 @@
 error: unsafe block missing a safety comment
-  --> $DIR/undocumented_unsafe_blocks.rs:257:19
+  --> $DIR/undocumented_unsafe_blocks.rs:262:19
    |
 LL |     /* Safety: */ unsafe {}
    |                   ^^^^^^^^^
@@ -8,103 +8,103 @@ LL |     /* Safety: */ unsafe {}
    = help: consider adding a safety comment on the preceding line
 
 error: unsafe block missing a safety comment
-  --> $DIR/undocumented_unsafe_blocks.rs:261:5
+  --> $DIR/undocumented_unsafe_blocks.rs:266:5
    |
 LL |     unsafe {}
    |     ^^^^^^^^^
    |
    = help: consider adding a safety comment on the preceding line
 
 error: unsafe block missing a safety comment
-  --> $DIR/undocumented_unsafe_blocks.rs:265:14
+  --> $DIR/undocumented_unsafe_blocks.rs:270:14
    |
 LL |     let _ = [unsafe { 14 }, unsafe { 15 }, 42, unsafe { 16 }];
    |              ^^^^^^^^^^^^^
    |
    = help: consider adding a safety comment on the preceding line
 
 error: unsafe block missing a safety comment
-  --> $DIR/undocumented_unsafe_blocks.rs:265:29
+  --> $DIR/undocumented_unsafe_blocks.rs:270:29
    |
 LL |     let _ = [unsafe { 14 }, unsafe { 15 }, 42, unsafe { 16 }];
    |                             ^^^^^^^^^^^^^
    |
    = help: consider adding a safety comment on the preceding line
 
 error: unsafe block missing a safety comment
-  --> $DIR/undocumented_unsafe_blocks.rs:265:48
+  --> $DIR/undocumented_unsafe_blocks.rs:270:48
    |
 LL |     let _ = [unsafe { 14 }, unsafe { 15 }, 42, unsafe { 16 }];
    |                                                ^^^^^^^^^^^^^
    |
    = help: consider adding a safety comment on the preceding line
 
 error: unsafe block missing a safety comment
-  --> $DIR/undocumented_unsafe_blocks.rs:269:18
+  --> $DIR/undocumented_unsafe_blocks.rs:274:18
    |
 LL |     let _ = (42, unsafe {}, "test", unsafe {});
    |                  ^^^^^^^^^
    |
    = help: consider adding a safety comment on the preceding line
 
 error: unsafe block missing a safety comment
-  --> $DIR/undocumented_unsafe_blocks.rs:269:37
+  --> $DIR/undocumented_unsafe_blocks.rs:274:37
    |
 LL |     let _ = (42, unsafe {}, "test", unsafe {});
    |                                     ^^^^^^^^^
    |
    = help: consider adding a safety comment on the preceding line
 
 error: unsafe block missing a safety comment
-  --> $DIR/undocumented_unsafe_blocks.rs:273:14
+  --> $DIR/undocumented_unsafe_blocks.rs:278:14
    |
 LL |     let _ = *unsafe { &42 };
    |              ^^^^^^^^^^^^^^
    |
    = help: consider adding a safety comment on the preceding line
 
 error: unsafe block missing a safety comment
-  --> $DIR/undocumented_unsafe_blocks.rs:278:19
+  --> $DIR/undocumented_unsafe_blocks.rs:283:19
    |
 LL |     let _ = match unsafe {} {
    |                   ^^^^^^^^^
    |
    = help: consider adding a safety comment on the preceding line
 
 error: unsafe block missing a safety comment
-  --> $DIR/undocumented_unsafe_blocks.rs:284:14
+  --> $DIR/undocumented_unsafe_blocks.rs:289:14
    |
 LL |     let _ = &unsafe {};
    |              ^^^^^^^^^
    |
    = help: consider adding a safety comment on the preceding line
 
 error: unsafe block missing a safety comment
-  --> $DIR/undocumented_unsafe_blocks.rs:288:14
+  --> $DIR/undocumented_unsafe_blocks.rs:293:14
    |
 LL |     let _ = [unsafe {}; 5];
    |              ^^^^^^^^^
    |
    = help: consider adding a safety comment on the preceding line
 
 error: unsafe block missing a safety comment
-  --> $DIR/undocumented_unsafe_blocks.rs:292:13
+  --> $DIR/undocumented_unsafe_blocks.rs:297:13
    |
 LL |     let _ = unsafe {};
    |             ^^^^^^^^^
    |
    = help: consider adding a safety comment on the preceding line
 
 error: unsafe block missing a safety comment
-  --> $DIR/undocumented_unsafe_blocks.rs:302:8
+  --> $DIR/undocumented_unsafe_blocks.rs:307:8
    |
 LL |     t!(unsafe {});
    |        ^^^^^^^^^
    |
    = help: consider adding a safety comment on the preceding line
 
 error: unsafe block missing a safety comment
-  --> $DIR/undocumented_unsafe_blocks.rs:308:13
+  --> $DIR/undocumented_unsafe_blocks.rs:313:13
    |
 LL |             unsafe {}
    |             ^^^^^^^^^
@@ -116,55 +116,55 @@ LL |     t!();
    = note: this error originates in the macro `t` (in Nightly builds, run with -Z macro-backtrace for more info)
 
 error: unsafe block missing a safety comment
-  --> $DIR/undocumented_unsafe_blocks.rs:316:5
+  --> $DIR/undocumented_unsafe_blocks.rs:321:5
    |
 LL |     unsafe {} // SAFETY:
    |     ^^^^^^^^^
    |
    = help: consider adding a safety comment on the preceding line
 
 error: unsafe block missing a safety comment
-  --> $DIR/undocumented_unsafe_blocks.rs:320:5
+  --> $DIR/undocumented_unsafe_blocks.rs:325:5
    |
 LL |     unsafe {
    |     ^^^^^^^^
    |
    = help: consider adding a safety comment on the preceding line
 
 error: unsafe block missing a safety comment
-  --> $DIR/undocumented_unsafe_blocks.rs:330:5
+  --> $DIR/undocumented_unsafe_blocks.rs:335:5
    |
 LL |     unsafe {};
    |     ^^^^^^^^^
    |
    = help: consider adding a safety comment on the preceding line
 
 error: unsafe block missing a safety comment
-  --> $DIR/undocumented_unsafe_blocks.rs:334:20
+  --> $DIR/undocumented_unsafe_blocks.rs:339:20
    |
 LL |     println!("{}", unsafe { String::from_utf8_unchecked(vec![]) });
    |                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    |
    = help: consider adding a safety comment on the preceding line
 
 error: unsafe impl missing a safety comment
-  --> $DIR/undocumented_unsafe_blocks.rs:341:5
+  --> $DIR/undocumented_unsafe_blocks.rs:346:5
    |
 LL |     unsafe impl A for () {}
    |     ^^^^^^^^^^^^^^^^^^^^^^^
    |
    = help: consider adding a safety comment on the preceding line
 
 error: unsafe impl missing a safety comment
-  --> $DIR/undocumented_unsafe_blocks.rs:348:9
+  --> $DIR/undocumented_unsafe_blocks.rs:353:9
    |
 LL |         unsafe impl B for (u32) {}
    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^
    |
    = help: consider adding a safety comment on the preceding line
 
 error: unsafe impl missing a safety comment
-  --> $DIR/undocumented_unsafe_blocks.rs:369:13
+  --> $DIR/undocumented_unsafe_blocks.rs:374:13
    |
 LL |             unsafe impl T for $t {}
    |             ^^^^^^^^^^^^^^^^^^^^^^^
@@ -176,7 +176,7 @@ LL |     no_safety_comment!(());
    = note: this error originates in the macro `no_safety_comment` (in Nightly builds, run with -Z macro-backtrace for more info)
 
 error: unsafe impl missing a safety comment
-  --> $DIR/undocumented_unsafe_blocks.rs:394:13
+  --> $DIR/undocumented_unsafe_blocks.rs:399:13
    |
 LL |             unsafe impl T for $t {}
    |             ^^^^^^^^^^^^^^^^^^^^^^^
@@ -188,15 +188,15 @@ LL |     no_safety_comment!(());
    = note: this error originates in the macro `no_safety_comment` (in Nightly builds, run with -Z macro-backtrace for more info)
 
 error: unsafe impl missing a safety comment
-  --> $DIR/undocumented_unsafe_blocks.rs:402:5
+  --> $DIR/undocumented_unsafe_blocks.rs:407:5
    |
 LL |     unsafe impl T for (i32) {}
    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
    |
    = help: consider adding a safety comment on the preceding line
 
 error: unsafe impl missing a safety comment
-  --> $DIR/undocumented_unsafe_blocks.rs:394:13
+  --> $DIR/undocumented_unsafe_blocks.rs:399:13
    |
 LL |             unsafe impl T for $t {}
    |             ^^^^^^^^^^^^^^^^^^^^^^^
@@ -208,55 +208,55 @@ LL |     no_safety_comment!(u32);
    = note: this error originates in the macro `no_safety_comment` (in Nightly builds, run with -Z macro-backtrace for more info)
 
 error: unsafe impl missing a safety comment
-  --> $DIR/undocumented_unsafe_blocks.rs:408:5
+  --> $DIR/undocumented_unsafe_blocks.rs:413:5
    |
 LL |     unsafe impl T for (bool) {}
    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
    |
    = help: consider adding a safety comment on the preceding line
 
 error: unsafe impl missing a safety comment
-  --> $DIR/undocumented_unsafe_blocks.rs:454:5
+  --> $DIR/undocumented_unsafe_blocks.rs:459:5
    |
 LL |     unsafe impl NoComment for () {}
    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    |
    = help: consider adding a safety comment on the preceding line
 
 error: unsafe impl missing a safety comment
-  --> $DIR/undocumented_unsafe_blocks.rs:458:19
+  --> $DIR/undocumented_unsafe_blocks.rs:463:19
    |
 LL |     /* SAFETY: */ unsafe impl InlineComment for () {}
    |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    |
    = help: consider adding a safety comment on the preceding line
 
 error: unsafe impl missing a safety comment
-  --> $DIR/undocumented_unsafe_blocks.rs:462:5
+  --> $DIR/undocumented_unsafe_blocks.rs:467:5
    |
 LL |     unsafe impl TrailingComment for () {} // SAFETY:
    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    |
    = help: consider adding a safety comment on the preceding line
 
 error: unsafe impl missing a safety comment
-  --> $DIR/undocumented_unsafe_blocks.rs:467:5
+  --> $DIR/undocumented_unsafe_blocks.rs:472:5
    |
 LL |     unsafe impl Interference for () {}
    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    |
    = help: consider adding a safety comment on the preceding line
 
 error: unsafe impl missing a safety comment
-  --> $DIR/undocumented_unsafe_blocks.rs:474:5
+  --> $DIR/undocumented_unsafe_blocks.rs:479:5
    |
 LL |     unsafe impl ImplInFn for () {}
    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    |
    = help: consider adding a safety comment on the preceding line
 
 error: unsafe impl missing a safety comment
-  --> $DIR/undocumented_unsafe_blocks.rs:483:1
+  --> $DIR/undocumented_unsafe_blocks.rs:488:1
    |
 LL | unsafe impl CrateRoot for () {}
    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

Original file line number	Diff line number	Diff line change
`@@ -1,5 +1,5 @@`
`1`	`1`	`error: unsafe block missing a safety comment`
`2`		`- --> $DIR/undocumented_unsafe_blocks.rs:257:19`
	`2`	`+ --> $DIR/undocumented_unsafe_blocks.rs:262:19`
`3`	`3`	`\|`
`4`	`4`	`LL \| /* Safety: */ unsafe {}`
`5`	`5`	`\| ^^^^^^^^^`
`@@ -8,103 +8,103 @@ LL \| /* Safety: */ unsafe {}`
`8`	`8`	`= help: consider adding a safety comment on the preceding line`
`9`	`9`
`10`	`10`	`error: unsafe block missing a safety comment`
`11`		`- --> $DIR/undocumented_unsafe_blocks.rs:261:5`
	`11`	`+ --> $DIR/undocumented_unsafe_blocks.rs:266:5`
`12`	`12`	`\|`
`13`	`13`	`LL \| unsafe {}`
`14`	`14`	`\| ^^^^^^^^^`
`15`	`15`	`\|`
`16`	`16`	`= help: consider adding a safety comment on the preceding line`
`17`	`17`
`18`	`18`	`error: unsafe block missing a safety comment`
`19`		`- --> $DIR/undocumented_unsafe_blocks.rs:265:14`
	`19`	`+ --> $DIR/undocumented_unsafe_blocks.rs:270:14`
`20`	`20`	`\|`
`21`	`21`	`LL \| let _ = [unsafe { 14 }, unsafe { 15 }, 42, unsafe { 16 }];`
`22`	`22`	`\| ^^^^^^^^^^^^^`
`23`	`23`	`\|`
`24`	`24`	`= help: consider adding a safety comment on the preceding line`
`25`	`25`
`26`	`26`	`error: unsafe block missing a safety comment`
`27`		`- --> $DIR/undocumented_unsafe_blocks.rs:265:29`
	`27`	`+ --> $DIR/undocumented_unsafe_blocks.rs:270:29`
`28`	`28`	`\|`
`29`	`29`	`LL \| let _ = [unsafe { 14 }, unsafe { 15 }, 42, unsafe { 16 }];`
`30`	`30`	`\| ^^^^^^^^^^^^^`
`31`	`31`	`\|`
`32`	`32`	`= help: consider adding a safety comment on the preceding line`
`33`	`33`
`34`	`34`	`error: unsafe block missing a safety comment`
`35`		`- --> $DIR/undocumented_unsafe_blocks.rs:265:48`
	`35`	`+ --> $DIR/undocumented_unsafe_blocks.rs:270:48`
`36`	`36`	`\|`
`37`	`37`	`LL \| let _ = [unsafe { 14 }, unsafe { 15 }, 42, unsafe { 16 }];`
`38`	`38`	`\| ^^^^^^^^^^^^^`
`39`	`39`	`\|`
`40`	`40`	`= help: consider adding a safety comment on the preceding line`
`41`	`41`
`42`	`42`	`error: unsafe block missing a safety comment`
`43`		`- --> $DIR/undocumented_unsafe_blocks.rs:269:18`
	`43`	`+ --> $DIR/undocumented_unsafe_blocks.rs:274:18`
`44`	`44`	`\|`
`45`	`45`	`LL \| let _ = (42, unsafe {}, "test", unsafe {});`
`46`	`46`	`\| ^^^^^^^^^`
`47`	`47`	`\|`
`48`	`48`	`= help: consider adding a safety comment on the preceding line`
`49`	`49`
`50`	`50`	`error: unsafe block missing a safety comment`
`51`		`- --> $DIR/undocumented_unsafe_blocks.rs:269:37`
	`51`	`+ --> $DIR/undocumented_unsafe_blocks.rs:274:37`
`52`	`52`	`\|`
`53`	`53`	`LL \| let _ = (42, unsafe {}, "test", unsafe {});`
`54`	`54`	`\| ^^^^^^^^^`
`55`	`55`	`\|`
`56`	`56`	`= help: consider adding a safety comment on the preceding line`
`57`	`57`
`58`	`58`	`error: unsafe block missing a safety comment`
`59`		`- --> $DIR/undocumented_unsafe_blocks.rs:273:14`
	`59`	`+ --> $DIR/undocumented_unsafe_blocks.rs:278:14`
`60`	`60`	`\|`
`61`	`61`	`LL \| let _ = *unsafe { &42 };`
`62`	`62`	`\| ^^^^^^^^^^^^^^`
`63`	`63`	`\|`
`64`	`64`	`= help: consider adding a safety comment on the preceding line`
`65`	`65`
`66`	`66`	`error: unsafe block missing a safety comment`
`67`		`- --> $DIR/undocumented_unsafe_blocks.rs:278:19`
	`67`	`+ --> $DIR/undocumented_unsafe_blocks.rs:283:19`
`68`	`68`	`\|`
`69`	`69`	`LL \| let _ = match unsafe {} {`
`70`	`70`	`\| ^^^^^^^^^`
`71`	`71`	`\|`
`72`	`72`	`= help: consider adding a safety comment on the preceding line`
`73`	`73`
`74`	`74`	`error: unsafe block missing a safety comment`
`75`		`- --> $DIR/undocumented_unsafe_blocks.rs:284:14`
	`75`	`+ --> $DIR/undocumented_unsafe_blocks.rs:289:14`
`76`	`76`	`\|`
`77`	`77`	`LL \| let _ = &unsafe {};`
`78`	`78`	`\| ^^^^^^^^^`
`79`	`79`	`\|`
`80`	`80`	`= help: consider adding a safety comment on the preceding line`
`81`	`81`
`82`	`82`	`error: unsafe block missing a safety comment`
`83`		`- --> $DIR/undocumented_unsafe_blocks.rs:288:14`
	`83`	`+ --> $DIR/undocumented_unsafe_blocks.rs:293:14`
`84`	`84`	`\|`
`85`	`85`	`LL \| let _ = [unsafe {}; 5];`
`86`	`86`	`\| ^^^^^^^^^`
`87`	`87`	`\|`
`88`	`88`	`= help: consider adding a safety comment on the preceding line`
`89`	`89`
`90`	`90`	`error: unsafe block missing a safety comment`
`91`		`- --> $DIR/undocumented_unsafe_blocks.rs:292:13`
	`91`	`+ --> $DIR/undocumented_unsafe_blocks.rs:297:13`
`92`	`92`	`\|`
`93`	`93`	`LL \| let _ = unsafe {};`
`94`	`94`	`\| ^^^^^^^^^`
`95`	`95`	`\|`
`96`	`96`	`= help: consider adding a safety comment on the preceding line`
`97`	`97`
`98`	`98`	`error: unsafe block missing a safety comment`
`99`		`- --> $DIR/undocumented_unsafe_blocks.rs:302:8`
	`99`	`+ --> $DIR/undocumented_unsafe_blocks.rs:307:8`
`100`	`100`	`\|`
`101`	`101`	`LL \| t!(unsafe {});`
`102`	`102`	`\| ^^^^^^^^^`
`103`	`103`	`\|`
`104`	`104`	`= help: consider adding a safety comment on the preceding line`
`105`	`105`
`106`	`106`	`error: unsafe block missing a safety comment`
`107`		`- --> $DIR/undocumented_unsafe_blocks.rs:308:13`
	`107`	`+ --> $DIR/undocumented_unsafe_blocks.rs:313:13`
`108`	`108`	`\|`
`109`	`109`	`LL \| unsafe {}`
`110`	`110`	`\| ^^^^^^^^^`
`@@ -116,55 +116,55 @@ LL \| t!();`
`116`	`116`	= note: this error originates in the macro `t` (in Nightly builds, run with -Z macro-backtrace for more info)
`117`	`117`
`118`	`118`	`error: unsafe block missing a safety comment`
`119`		`- --> $DIR/undocumented_unsafe_blocks.rs:316:5`
	`119`	`+ --> $DIR/undocumented_unsafe_blocks.rs:321:5`
`120`	`120`	`\|`
`121`	`121`	`LL \| unsafe {} // SAFETY:`
`122`	`122`	`\| ^^^^^^^^^`
`123`	`123`	`\|`
`124`	`124`	`= help: consider adding a safety comment on the preceding line`
`125`	`125`
`126`	`126`	`error: unsafe block missing a safety comment`
`127`		`- --> $DIR/undocumented_unsafe_blocks.rs:320:5`
	`127`	`+ --> $DIR/undocumented_unsafe_blocks.rs:325:5`
`128`	`128`	`\|`
`129`	`129`	`LL \| unsafe {`
`130`	`130`	`\| ^^^^^^^^`
`131`	`131`	`\|`
`132`	`132`	`= help: consider adding a safety comment on the preceding line`
`133`	`133`
`134`	`134`	`error: unsafe block missing a safety comment`
`135`		`- --> $DIR/undocumented_unsafe_blocks.rs:330:5`
	`135`	`+ --> $DIR/undocumented_unsafe_blocks.rs:335:5`
`136`	`136`	`\|`
`137`	`137`	`LL \| unsafe {};`
`138`	`138`	`\| ^^^^^^^^^`
`139`	`139`	`\|`
`140`	`140`	`= help: consider adding a safety comment on the preceding line`
`141`	`141`
`142`	`142`	`error: unsafe block missing a safety comment`
`143`		`- --> $DIR/undocumented_unsafe_blocks.rs:334:20`
	`143`	`+ --> $DIR/undocumented_unsafe_blocks.rs:339:20`
`144`	`144`	`\|`
`145`	`145`	`LL \| println!("{}", unsafe { String::from_utf8_unchecked(vec![]) });`
`146`	`146`	`\| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^`
`147`	`147`	`\|`
`148`	`148`	`= help: consider adding a safety comment on the preceding line`
`149`	`149`
`150`	`150`	`error: unsafe impl missing a safety comment`
`151`		`- --> $DIR/undocumented_unsafe_blocks.rs:341:5`
	`151`	`+ --> $DIR/undocumented_unsafe_blocks.rs:346:5`
`152`	`152`	`\|`
`153`	`153`	`LL \| unsafe impl A for () {}`
`154`	`154`	`\| ^^^^^^^^^^^^^^^^^^^^^^^`
`155`	`155`	`\|`
`156`	`156`	`= help: consider adding a safety comment on the preceding line`
`157`	`157`
`158`	`158`	`error: unsafe impl missing a safety comment`
`159`		`- --> $DIR/undocumented_unsafe_blocks.rs:348:9`
	`159`	`+ --> $DIR/undocumented_unsafe_blocks.rs:353:9`
`160`	`160`	`\|`
`161`	`161`	`LL \| unsafe impl B for (u32) {}`
`162`	`162`	`\| ^^^^^^^^^^^^^^^^^^^^^^^^^^`
`163`	`163`	`\|`
`164`	`164`	`= help: consider adding a safety comment on the preceding line`
`165`	`165`
`166`	`166`	`error: unsafe impl missing a safety comment`
`167`		`- --> $DIR/undocumented_unsafe_blocks.rs:369:13`
	`167`	`+ --> $DIR/undocumented_unsafe_blocks.rs:374:13`
`168`	`168`	`\|`
`169`	`169`	`LL \| unsafe impl T for $t {}`
`170`	`170`	`\| ^^^^^^^^^^^^^^^^^^^^^^^`
`@@ -176,7 +176,7 @@ LL \| no_safety_comment!(());`
`176`	`176`	= note: this error originates in the macro `no_safety_comment` (in Nightly builds, run with -Z macro-backtrace for more info)
`177`	`177`
`178`	`178`	`error: unsafe impl missing a safety comment`
`179`		`- --> $DIR/undocumented_unsafe_blocks.rs:394:13`
	`179`	`+ --> $DIR/undocumented_unsafe_blocks.rs:399:13`
`180`	`180`	`\|`
`181`	`181`	`LL \| unsafe impl T for $t {}`
`182`	`182`	`\| ^^^^^^^^^^^^^^^^^^^^^^^`
`@@ -188,15 +188,15 @@ LL \| no_safety_comment!(());`
`188`	`188`	= note: this error originates in the macro `no_safety_comment` (in Nightly builds, run with -Z macro-backtrace for more info)
`189`	`189`
`190`	`190`	`error: unsafe impl missing a safety comment`
`191`		`- --> $DIR/undocumented_unsafe_blocks.rs:402:5`
	`191`	`+ --> $DIR/undocumented_unsafe_blocks.rs:407:5`
`192`	`192`	`\|`
`193`	`193`	`LL \| unsafe impl T for (i32) {}`
`194`	`194`	`\| ^^^^^^^^^^^^^^^^^^^^^^^^^^`
`195`	`195`	`\|`
`196`	`196`	`= help: consider adding a safety comment on the preceding line`
`197`	`197`
`198`	`198`	`error: unsafe impl missing a safety comment`
`199`		`- --> $DIR/undocumented_unsafe_blocks.rs:394:13`
	`199`	`+ --> $DIR/undocumented_unsafe_blocks.rs:399:13`
`200`	`200`	`\|`
`201`	`201`	`LL \| unsafe impl T for $t {}`
`202`	`202`	`\| ^^^^^^^^^^^^^^^^^^^^^^^`
`@@ -208,55 +208,55 @@ LL \| no_safety_comment!(u32);`
`208`	`208`	= note: this error originates in the macro `no_safety_comment` (in Nightly builds, run with -Z macro-backtrace for more info)
`209`	`209`
`210`	`210`	`error: unsafe impl missing a safety comment`
`211`		`- --> $DIR/undocumented_unsafe_blocks.rs:408:5`
	`211`	`+ --> $DIR/undocumented_unsafe_blocks.rs:413:5`
`212`	`212`	`\|`
`213`	`213`	`LL \| unsafe impl T for (bool) {}`
`214`	`214`	`\| ^^^^^^^^^^^^^^^^^^^^^^^^^^^`
`215`	`215`	`\|`
`216`	`216`	`= help: consider adding a safety comment on the preceding line`
`217`	`217`
`218`	`218`	`error: unsafe impl missing a safety comment`
`219`		`- --> $DIR/undocumented_unsafe_blocks.rs:454:5`
	`219`	`+ --> $DIR/undocumented_unsafe_blocks.rs:459:5`
`220`	`220`	`\|`
`221`	`221`	`LL \| unsafe impl NoComment for () {}`
`222`	`222`	`\| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^`
`223`	`223`	`\|`
`224`	`224`	`= help: consider adding a safety comment on the preceding line`
`225`	`225`
`226`	`226`	`error: unsafe impl missing a safety comment`
`227`		`- --> $DIR/undocumented_unsafe_blocks.rs:458:19`
	`227`	`+ --> $DIR/undocumented_unsafe_blocks.rs:463:19`
`228`	`228`	`\|`
`229`	`229`	`LL \| /* SAFETY: */ unsafe impl InlineComment for () {}`
`230`	`230`	`\| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^`
`231`	`231`	`\|`
`232`	`232`	`= help: consider adding a safety comment on the preceding line`
`233`	`233`
`234`	`234`	`error: unsafe impl missing a safety comment`
`235`		`- --> $DIR/undocumented_unsafe_blocks.rs:462:5`
	`235`	`+ --> $DIR/undocumented_unsafe_blocks.rs:467:5`
`236`	`236`	`\|`
`237`	`237`	`LL \| unsafe impl TrailingComment for () {} // SAFETY:`
`238`	`238`	`\| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^`
`239`	`239`	`\|`
`240`	`240`	`= help: consider adding a safety comment on the preceding line`
`241`	`241`
`242`	`242`	`error: unsafe impl missing a safety comment`
`243`		`- --> $DIR/undocumented_unsafe_blocks.rs:467:5`
	`243`	`+ --> $DIR/undocumented_unsafe_blocks.rs:472:5`
`244`	`244`	`\|`
`245`	`245`	`LL \| unsafe impl Interference for () {}`
`246`	`246`	`\| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^`
`247`	`247`	`\|`
`248`	`248`	`= help: consider adding a safety comment on the preceding line`
`249`	`249`
`250`	`250`	`error: unsafe impl missing a safety comment`
`251`		`- --> $DIR/undocumented_unsafe_blocks.rs:474:5`
	`251`	`+ --> $DIR/undocumented_unsafe_blocks.rs:479:5`
`252`	`252`	`\|`
`253`	`253`	`LL \| unsafe impl ImplInFn for () {}`
`254`	`254`	`\| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^`
`255`	`255`	`\|`
`256`	`256`	`= help: consider adding a safety comment on the preceding line`
`257`	`257`
`258`	`258`	`error: unsafe impl missing a safety comment`
`259`		`- --> $DIR/undocumented_unsafe_blocks.rs:483:1`
	`259`	`+ --> $DIR/undocumented_unsafe_blocks.rs:488:1`
`260`	`260`	`\|`
`261`	`261`	`LL \| unsafe impl CrateRoot for () {}`
`262`	`262`	`\| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^`