Auto merge of #50413 - kennytm:rollup, r=kennytm

Rollup of 12 pull requests

Successful merges:

 - #50302 (Add query search order check)
 - #50320 (Fix invalid path generation in rustdoc search)
 - #50349 (Rename "show type declaration" to "show declaration")
 - #50360 (Clarify wordings of the `unstable_name_collision` lint.)
 - #50365 (Use two vectors in nearest_common_ancestor.)
 - #50393 (Allow unaligned reads in constants)
 - #50401 (Revert "Implement FromStr for PathBuf")
 - #50406 (Forbid constructing empty identifiers from concat_idents)
 - #50407 (Always inline simple BytePos and CharPos methods.)
 - #50416 (check if the token is a lifetime before parsing)
 - #50417 (Update Cargo)
 - #50421 (Fix ICE when using a..=b in a closure.)

Failed merges:

1 files changed, 12 insertions, 6 deletions

diff --git a/src/tools/rustdoc-js/tester.js b/src/tools/rustdoc-js/tester.js
index 6992f2ba123..1c79443dedf 100644
--- a/src/tools/rustdoc-js/tester.js
+++ b/src/tools/rustdoc-js/tester.js
@@ -87,6 +87,7 @@ function loadContent(content) {
     var Module = module.constructor;
     var m = new Module();
     m._compile(content, "tmp.js");
+    m.exports.ignore_order = content.indexOf("\n// ignore-order\n") !== -1;
     return m.exports;
 }
 
@@ -130,10 +131,10 @@ function lookForEntry(entry, data) {
             }
         }
         if (allGood === true) {
-            return true;
+            return i;
         }
     }
-    return false;
+    return null;
 }
 
 function main(argv) {
@@ -177,6 +178,7 @@ function main(argv) {
                                'exports.QUERY = QUERY;exports.EXPECTED = EXPECTED;');
         const expected = loadedFile.EXPECTED;
         const query = loadedFile.QUERY;
+        const ignore_order = loadedFile.ignore_order;
         var results = loaded.execSearch(loaded.getQuery(query), index);
         process.stdout.write('Checking "' + file + '" ... ');
         var error_text = [];
@@ -189,13 +191,17 @@ function main(argv) {
                 break;
             }
             var entry = expected[key];
-            var found = false;
+            var prev_pos = 0;
             for (var i = 0; i < entry.length; ++i) {
-                if (lookForEntry(entry[i], results[key]) === true) {
-                    found = true;
-                } else {
+                var entry_pos = lookForEntry(entry[i], results[key]);
+                if (entry_pos === null) {
                     error_text.push("==> Result not found in '" + key + "': '" +
                                     JSON.stringify(entry[i]) + "'");
+                } else if (entry_pos < prev_pos && ignore_order === false) {
+                    error_text.push("==> '" + JSON.stringify(entry[i]) + "' was supposed to be " +
+                                    " before '" + JSON.stringify(results[key][entry_pos]) + "'");
+                } else {
+                    prev_pos = entry_pos;
                 }
             }
         }