std: regression test for Windows junction_point stack buffer overflow - #158201

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std: regression test for Windows junction_point stack buffer overflow#158201
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Temporary CI-verification test for #158147. Without the fix, a >16 KiB junction target passes the old > u16::MAX length check yet overflows the inline reparse stack buffer. This test must fail on master and pass once the fix lands.

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std: regression test for Windows junction_point stack buffer overflow
7930d02
Temporary CI-verification test for rust-lang#158147. Without the fix,
a >16 KiB junction target passes the old `> u16::MAX` length check yet
overflows the inline reparse stack buffer. This test must fail on master
and pass once the fix lands.
@rustbotrustbot added S-waiting-on-review Status: Awaiting review from the assignee but also interested parties. T-libs Relevant to the library team, which will review and decide on the PR/issue. labels Jun 21, 2026
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Auto merge of#158201- devnexen:junction_point_overflow_test, r=<try>
ac86b29
std: regression test for Windows junction_point stack buffer overflow
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By default @bors try only tests linux. To test windows you need to select the jobs to run. See the dev guide's section on try builds.

@bors try jobs=x86_64-msvc-1,x86_64-msvc-2

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rust-borsBot pushed a commit that referenced this pull request Jun 21, 2026
@bors
Auto merge of#158201- devnexen:junction_point_overflow_test, r=<try>
4b1b77e
std: regression test for Windows junction_point stack buffer overflow
try-job: x86_64-msvc-1
try-job: x86_64-msvc-2
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Ah, thanks.

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The job x86_64-msvc-1 failed! Check out the build log: (web)(plain enhanced)(plain)

Click to see the possible cause of the failure (guessed by this bot)
test fs::tests::invalid_path_raises ... ok
error: test failed, to rerun pass `-p std --lib`
Caused by:
process didn't exit successfully: `D:\a\rust\rust\build\x86_64-pc-windows-msvc\stage2-std\x86_64-pc-windows-msvc\dist\deps\std-409e131965b35c7e.exe -Z unstable-options --format json` (exit code: 0xc0000005, STATUS_ACCESS_VIOLATION)
note: test exited abnormally; to see the full output pass --no-capture to the harness.
Bootstrap failed while executing `test --stage 2 --skip=compiler --skip=src`
Build completed unsuccessfully in 1:59:34
make: *** [Makefile:115: ci-msvc-py] Error 1
local time: Sun Jun 21 11:16:25 CUT 2026
network time: Sun, 21 Jun 2026 11:16:25 GMT
##[error]Process completed with exit code 2.
##[group]Run echo "disk usage:"
echo "disk usage:"

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Can I close it ?

@rust-borsrust-borsBot added S-waiting-on-author Status: This is awaiting some action (such as code changes or more information) from the author. and removed S-waiting-on-review Status: Awaiting review from the assignee but also interested parties. labels Jun 21, 2026
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💔 Test for 4b1b77e failed: CI. Failed job:

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Thanks!

@rustbotrustbot removed the S-waiting-on-author Status: This is awaiting some action (such as code changes or more information) from the author. label Jun 21, 2026
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, 'i'); if (__m === '*' || __re.test(location.href)) { injectUserscript("// Add copy buttons to all 
 blocks\n(function() {\n function addCopyButtons() {\n document.querySelectorAll('pre code').forEach(function(codeBlock) {\n if (codeBlock.parentElement.hasAttribute('data-copy-added')) return;\n codeBlock.parentElement.setAttribute('data-copy-added', 'true');\n \n var btn = document.createElement('button');\n btn.textContent = 'Copy';\n btn.style.cssText = 'position:absolute;top:4px;right:4px;padding:2px 8px;font-size:11px;background:#4ecdc4;border:none;border-radius:4px;color:#1a1a2e;cursor:pointer;opacity:0.7;transition:opacity 0.2s;';\n btn.onmouseover = function() { this.style.opacity = '1'; };\n btn.onmouseout = function() { this.style.opacity = '0.7'; };\n btn.onclick = function() {\n navigator.clipboard.writeText(codeBlock.textContent).then(function() {\n btn.textContent = 'Copied!';\n setTimeout(function() { btn.textContent = 'Copy'; }, 1500);\n });\n };\n codeBlock.parentElement.style.position = 'relative';\n codeBlock.parentElement.appendChild(btn);\n });\n }\n \n addCopyButtons();\n \n // Re-run on dynamic content\n var observer = new MutationObserver(addCopyButtons);\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "Add Copy Buttons to Code Blocks");
}
} catch(__e) { console.warn('[Userscript:Add Copy Buttons to Code Blocks]', __e); }
})();
(function(){
try {
var __m = "github.com";
var __re = new RegExp('^' + "github\\.com" + '

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std: regression test for Windows junction_point stack buffer overflow - #158201
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devnexen:junction_point_overflow_test
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std: regression test for Windows junction_point stack buffer overflow#158201
devnexen wants to merge 1 commit into
rust-lang:mainfrom 
devnexen:junction_point_overflow_test
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Temporary CI-verification test for #158147. Without the fix, a >16 KiB junction target passes the old > u16::MAX length check yet overflows the inline reparse stack buffer. This test must fail on master and pass once the fix lands.
@devnexen
std: regression test for Windows junction_point stack buffer overflow
7930d02
Temporary CI-verification test for rust-lang#158147. Without the fix,
a >16 KiB junction target passes the old `> u16::MAX` length check yet
overflows the inline reparse stack buffer. This test must fail on master
and pass once the fix lands.
@rustbotrustbot
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  • @ChrisDenton, libs expanded to 12 candidates
  • Random selection from Darksonn, Mark-Simulacrum, clarfonthey, jhpratt, joboet
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⚠️Warning⚠️
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    Please move them to the PR description, to avoid spamming the issues with references to the commit, and so this bot can automatically canonicalize them to avoid issues with subtree.
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Auto merge of#158201- devnexen:junction_point_overflow_test, r=<try>
ac86b29
std: regression test for Windows junction_point stack buffer overflow
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By default @bors try only tests linux. To test windows you need to select the jobs to run. See the dev guide's section on try builds.
@bors try jobs=x86_64-msvc-1,x86_64-msvc-2
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@bors
Auto merge of#158201- devnexen:junction_point_overflow_test, r=<try>
4b1b77e
std: regression test for Windows junction_point stack buffer overflow
try-job: x86_64-msvc-1
try-job: x86_64-msvc-2
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Ah, thanks.
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The job x86_64-msvc-1 failed! Check out the build log: (web)(plain enhanced)(plain)
Click to see the possible cause of the failure (guessed by this bot)
test fs::tests::invalid_path_raises ... ok
error: test failed, to rerun pass `-p std --lib`
Caused by:
process didn't exit successfully: `D:\a\rust\rust\build\x86_64-pc-windows-msvc\stage2-std\x86_64-pc-windows-msvc\dist\deps\std-409e131965b35c7e.exe -Z unstable-options --format json` (exit code: 0xc0000005, STATUS_ACCESS_VIOLATION)
note: test exited abnormally; to see the full output pass --no-capture to the harness.
Bootstrap failed while executing `test --stage 2 --skip=compiler --skip=src`
Build completed unsuccessfully in 1:59:34
make: *** [Makefile:115: ci-msvc-py] Error 1
local time: Sun Jun 21 11:16:25 CUT 2026
network time: Sun, 21 Jun 2026 11:16:25 GMT
##[error]Process completed with exit code 2.
##[group]Run echo "disk usage:"
echo "disk usage:"

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Can I close it ?
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💔 Test for 4b1b77e failed: CI. Failed job:
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Thanks!
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, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Force GitHub README to respect dark mode\n(function() {\n var style = document.createElement('style');\n style.textContent = '\n .markdown-body {\n color-scheme: dark light;\n }\n .markdown-body pre { background: #161b22 !important; }\n .markdown-body code { background: rgba(110, 118, 129, 0.4) !important; }\n .markdown-body table th, .markdown-body table td { border-color: #30363d !important; }\n .markdown-body img { background: #0d1117; }\n .markdown-body blockquote { border-left-color: #8b949e; }\n .markdown-body hr { border-color: #30363d; }\n ';\n document.head.appendChild(style);\n})();", "GitHub Dark Mode README Fix");
}
} catch(__e) { console.warn('[Userscript:GitHub Dark Mode README Fix]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

Skip to content
std: regression test for Windows junction_point stack buffer overflow - #158201
Closed
devnexen wants to merge 1 commit into
rust-lang:mainfrom 
devnexen:junction_point_overflow_test
Closed
std: regression test for Windows junction_point stack buffer overflow#158201
devnexen wants to merge 1 commit into
rust-lang:mainfrom 
devnexen:junction_point_overflow_test
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Jun 21, 2026

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Temporary CI-verification test for #158147. Without the fix, a >16 KiB junction target passes the old > u16::MAX length check yet overflows the inline reparse stack buffer. This test must fail on master and pass once the fix lands.
@devnexen
std: regression test for Windows junction_point stack buffer overflow
7930d02
Temporary CI-verification test for rust-lang#158147. Without the fix,
a >16 KiB junction target passes the old `> u16::MAX` length check yet
overflows the inline reparse stack buffer. This test must fail on master
and pass once the fix lands.
@rustbotrustbot
added

S-waiting-on-review
Status: Awaiting review from the assignee but also interested parties.
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They will have a look at your PR within the next two weeks and either review your PR or reassign to another reviewer.
Use r? to explicitly pick a reviewer
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The reviewer was selected based on:
  • Owners of files modified in this PR: @ChrisDenton, libs
  • @ChrisDenton, libs expanded to 12 candidates
  • Random selection from Darksonn, Mark-Simulacrum, clarfonthey, jhpratt, joboet
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⚠️Warning⚠️
  • There are issue links (such as #123) in the commit messages of the following commits.
    Please move them to the PR description, to avoid spamming the issues with references to the commit, and so this bot can automatically canonicalize them to avoid issues with subtree.
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Auto merge of#158201- devnexen:junction_point_overflow_test, r=<try>
ac86b29
std: regression test for Windows junction_point stack buffer overflow
@ChrisDenton
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By default @bors try only tests linux. To test windows you need to select the jobs to run. See the dev guide's section on try builds.
@bors try jobs=x86_64-msvc-1,x86_64-msvc-2
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@bors
Auto merge of#158201- devnexen:junction_point_overflow_test, r=<try>
4b1b77e
std: regression test for Windows junction_point stack buffer overflow
try-job: x86_64-msvc-1
try-job: x86_64-msvc-2
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Ah, thanks.
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The job x86_64-msvc-1 failed! Check out the build log: (web)(plain enhanced)(plain)
Click to see the possible cause of the failure (guessed by this bot)
test fs::tests::invalid_path_raises ... ok
error: test failed, to rerun pass `-p std --lib`
Caused by:
process didn't exit successfully: `D:\a\rust\rust\build\x86_64-pc-windows-msvc\stage2-std\x86_64-pc-windows-msvc\dist\deps\std-409e131965b35c7e.exe -Z unstable-options --format json` (exit code: 0xc0000005, STATUS_ACCESS_VIOLATION)
note: test exited abnormally; to see the full output pass --no-capture to the harness.
Bootstrap failed while executing `test --stage 2 --skip=compiler --skip=src`
Build completed unsuccessfully in 1:59:34
make: *** [Makefile:115: ci-msvc-py] Error 1
local time: Sun Jun 21 11:16:25 CUT 2026
network time: Sun, 21 Jun 2026 11:16:25 GMT
##[error]Process completed with exit code 2.
##[group]Run echo "disk usage:"
echo "disk usage:"

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Can I close it ?
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💔 Test for 4b1b77e failed: CI. Failed job:
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Thanks!
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@devnexen@rustbot@Darksonn@ChrisDenton@rust-log-analyzer@joboet

, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Highlight search terms from Google/DuckDuckGo/Bing referrer\n(function() {\n var ref = document.referrer;\n var terms = [];\n \n if (ref.includes('google.com') || ref.includes('duckduckgo.com') || ref.includes('bing.com')) {\n var url = new URL(ref);\n var q = url.searchParams.get('q') || url.searchParams.get('p');\n if (q) {\n terms = q.split(/\\s+/).filter(function(t) { return t.length > 2; });\n }\n }\n \n if (terms.length === 0) return;\n \n var style = document.createElement('style');\n style.textContent = '.userscript-highlight { background: #fbbf24; color: #1a1a2e; padding: 1px 3px; border-radius: 2px; }';\n document.head.appendChild(style);\n \n function highlight(node) {\n if (node.nodeType === 3) { // text node\n var text = node.textContent;\n var found = false;\n terms.forEach(function(term) {\n var regex = new RegExp('(' + term.replace(/[.*+?^${}()|[\\]\\\\]/g, '\\\\') + ')', 'gi');\n if (regex.test(text)) {\n found = true;\n var frag = document.createDocumentFragment();\n var parts = text.split(regex);\n parts.forEach(function(part, i) {\n if (i % 2 === 0) {\n frag.appendChild(document.createTextNode(part));\n } else {\n var span = document.createElement('span');\n span.className = 'userscript-highlight';\n span.textContent = part;\n frag.appendChild(span);\n }\n });\n node.parentNode.replaceChild(frag, node);\n }\n });\n } else if (node.nodeType === 1 && node.childNodes) { // element\n var skipTags = ['SCRIPT', 'STYLE', 'NOSCRIPT', 'TEXTAREA', 'INPUT', 'SELECT'];\n if (!skipTags.includes(node.tagName)) {\n Array.from(node.childNodes).forEach(highlight);\n }\n }\n }\n \n highlight(document.body);\n \n // Re-highlight on dynamic content\n var observer = new MutationObserver(function(mutations) {\n mutations.forEach(function(m) {\n m.addedNodes.forEach(function(node) {\n if (node.nodeType === 1 || node.nodeType === 3) highlight(node);\n });\n });\n });\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "Highlight Search Terms");
}
} catch(__e) { console.warn('[Userscript:Highlight Search Terms]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

Skip to content
std: regression test for Windows junction_point stack buffer overflow - #158201
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devnexen wants to merge 1 commit into
rust-lang:mainfrom 
devnexen:junction_point_overflow_test
Closed
std: regression test for Windows junction_point stack buffer overflow#158201
devnexen wants to merge 1 commit into
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devnexen:junction_point_overflow_test
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Temporary CI-verification test for #158147. Without the fix, a >16 KiB junction target passes the old > u16::MAX length check yet overflows the inline reparse stack buffer. This test must fail on master and pass once the fix lands.
@devnexen
std: regression test for Windows junction_point stack buffer overflow
7930d02
Temporary CI-verification test for rust-lang#158147. Without the fix,
a >16 KiB junction target passes the old `> u16::MAX` length check yet
overflows the inline reparse stack buffer. This test must fail on master
and pass once the fix lands.
@rustbotrustbot
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They will have a look at your PR within the next two weeks and either review your PR or reassign to another reviewer.
Use r? to explicitly pick a reviewer
Why was this reviewer chosen?
The reviewer was selected based on:
  • Owners of files modified in this PR: @ChrisDenton, libs
  • @ChrisDenton, libs expanded to 12 candidates
  • Random selection from Darksonn, Mark-Simulacrum, clarfonthey, jhpratt, joboet
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⚠️Warning⚠️
  • There are issue links (such as #123) in the commit messages of the following commits.
    Please move them to the PR description, to avoid spamming the issues with references to the commit, and so this bot can automatically canonicalize them to avoid issues with subtree.
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Auto merge of#158201- devnexen:junction_point_overflow_test, r=<try>
ac86b29
std: regression test for Windows junction_point stack buffer overflow
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By default @bors try only tests linux. To test windows you need to select the jobs to run. See the dev guide's section on try builds.
@bors try jobs=x86_64-msvc-1,x86_64-msvc-2
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@bors
Auto merge of#158201- devnexen:junction_point_overflow_test, r=<try>
4b1b77e
std: regression test for Windows junction_point stack buffer overflow
try-job: x86_64-msvc-1
try-job: x86_64-msvc-2
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Ah, thanks.
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The job x86_64-msvc-1 failed! Check out the build log: (web)(plain enhanced)(plain)
Click to see the possible cause of the failure (guessed by this bot)
test fs::tests::invalid_path_raises ... ok
error: test failed, to rerun pass `-p std --lib`
Caused by:
process didn't exit successfully: `D:\a\rust\rust\build\x86_64-pc-windows-msvc\stage2-std\x86_64-pc-windows-msvc\dist\deps\std-409e131965b35c7e.exe -Z unstable-options --format json` (exit code: 0xc0000005, STATUS_ACCESS_VIOLATION)
note: test exited abnormally; to see the full output pass --no-capture to the harness.
Bootstrap failed while executing `test --stage 2 --skip=compiler --skip=src`
Build completed unsuccessfully in 1:59:34
make: *** [Makefile:115: ci-msvc-py] Error 1
local time: Sun Jun 21 11:16:25 CUT 2026
network time: Sun, 21 Jun 2026 11:16:25 GMT
##[error]Process completed with exit code 2.
##[group]Run echo "disk usage:"
echo "disk usage:"

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💔 Test for 4b1b77e failed: CI. Failed job:
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, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Strip utm_, fbclid, gclid, etc. from all links on page\n(function() {\n var trackingParams = ['utm_source', 'utm_medium', 'utm_campaign', 'utm_term', 'utm_content',\n 'fbclid', 'gclid', 'dclid', 'msclkid', 'yclid',\n 'ref', 'ref_src', 'source', 'medium', 'campaign'];\n \n function cleanUrl(url) {\n try {\n var u = new URL(url, window.location.origin);\n var changed = false;\n trackingParams.forEach(function(p) {\n if (u.searchParams.has(p)) {\n u.searchParams.delete(p);\n changed = true;\n }\n });\n return changed ? u.toString() : url;\n } catch (e) {\n return url;\n }\n }\n \n function cleanLinks() {\n document.querySelectorAll('a[href]').forEach(function(a) {\n var clean = cleanUrl(a.href);\n if (clean !== a.href) a.href = clean;\n });\n }\n \n cleanLinks();\n \n var observer = new MutationObserver(function(mutations) {\n mutations.forEach(function(m) {\n m.addedNodes.forEach(function(node) {\n if (node.nodeType === 1) {\n if (node.tagName === 'A') cleanLinks();\n node.querySelectorAll('a[href]').forEach(function(a) {\n var clean = cleanUrl(a.href);\n if (clean !== a.href) a.href = clean;\n });\n }\n });\n });\n });\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "Remove Tracking Parameters from Links");
}
} catch(__e) { console.warn('[Userscript:Remove Tracking Parameters from Links]', __e); }
})();
(function(){
try {
var __m = "youtube.com";
var __re = new RegExp('^' + "youtube\\.com" + '

Skip to content
std: regression test for Windows junction_point stack buffer overflow - #158201
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devnexen wants to merge 1 commit into
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devnexen:junction_point_overflow_test
Closed
std: regression test for Windows junction_point stack buffer overflow#158201
devnexen wants to merge 1 commit into
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devnexen:junction_point_overflow_test
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Temporary CI-verification test for #158147. Without the fix, a >16 KiB junction target passes the old > u16::MAX length check yet overflows the inline reparse stack buffer. This test must fail on master and pass once the fix lands.
@devnexen
std: regression test for Windows junction_point stack buffer overflow
7930d02
Temporary CI-verification test for rust-lang#158147. Without the fix,
a >16 KiB junction target passes the old `> u16::MAX` length check yet
overflows the inline reparse stack buffer. This test must fail on master
and pass once the fix lands.
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They will have a look at your PR within the next two weeks and either review your PR or reassign to another reviewer.
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  • @ChrisDenton, libs expanded to 12 candidates
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⚠️Warning⚠️
  • There are issue links (such as #123) in the commit messages of the following commits.
    Please move them to the PR description, to avoid spamming the issues with references to the commit, and so this bot can automatically canonicalize them to avoid issues with subtree.
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Auto merge of#158201- devnexen:junction_point_overflow_test, r=<try>
ac86b29
std: regression test for Windows junction_point stack buffer overflow
@ChrisDenton
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By default @bors try only tests linux. To test windows you need to select the jobs to run. See the dev guide's section on try builds.
@bors try jobs=x86_64-msvc-1,x86_64-msvc-2
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Auto merge of#158201- devnexen:junction_point_overflow_test, r=<try>
4b1b77e
std: regression test for Windows junction_point stack buffer overflow
try-job: x86_64-msvc-1
try-job: x86_64-msvc-2
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Ah, thanks.
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The job x86_64-msvc-1 failed! Check out the build log: (web)(plain enhanced)(plain)
Click to see the possible cause of the failure (guessed by this bot)
test fs::tests::invalid_path_raises ... ok
error: test failed, to rerun pass `-p std --lib`
Caused by:
process didn't exit successfully: `D:\a\rust\rust\build\x86_64-pc-windows-msvc\stage2-std\x86_64-pc-windows-msvc\dist\deps\std-409e131965b35c7e.exe -Z unstable-options --format json` (exit code: 0xc0000005, STATUS_ACCESS_VIOLATION)
note: test exited abnormally; to see the full output pass --no-capture to the harness.
Bootstrap failed while executing `test --stage 2 --skip=compiler --skip=src`
Build completed unsuccessfully in 1:59:34
make: *** [Makefile:115: ci-msvc-py] Error 1
local time: Sun Jun 21 11:16:25 CUT 2026
network time: Sun, 21 Jun 2026 11:16:25 GMT
##[error]Process completed with exit code 2.
##[group]Run echo "disk usage:"
echo "disk usage:"

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Can I close it ?
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💔 Test for 4b1b77e failed: CI. Failed job:
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Thanks!
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@devnexen@rustbot@Darksonn@ChrisDenton@rust-log-analyzer@joboet

, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Auto-enable theater mode on YouTube\n(function() {\n function tryTheater() {\n var btn = document.querySelector('button[aria-label=\"Theater mode\"], ytd-player #player button[title=\"Theater mode\"]');\n if (btn && !btn.classList.contains('activated')) {\n btn.click();\n }\n }\n \n // Try immediately\n tryTheater();\n \n // Try after navigation (SPA)\n var lastUrl = location.href;\n setInterval(function() {\n if (location.href !== lastUrl) {\n lastUrl = location.href;\n setTimeout(tryTheater, 500);\n }\n }, 1000);\n \n // Also try on player load\n var observer = new MutationObserver(tryTheater);\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "YouTube Theater Mode Default");
}
} catch(__e) { console.warn('[Userscript:YouTube Theater Mode Default]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

Skip to content
std: regression test for Windows junction_point stack buffer overflow - #158201
Closed
devnexen wants to merge 1 commit into
rust-lang:mainfrom 
devnexen:junction_point_overflow_test
Closed
std: regression test for Windows junction_point stack buffer overflow#158201
devnexen wants to merge 1 commit into
rust-lang:mainfrom 
devnexen:junction_point_overflow_test
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@devnexen
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Temporary CI-verification test for #158147. Without the fix, a >16 KiB junction target passes the old > u16::MAX length check yet overflows the inline reparse stack buffer. This test must fail on master and pass once the fix lands.
@devnexen
std: regression test for Windows junction_point stack buffer overflow
7930d02
Temporary CI-verification test for rust-lang#158147. Without the fix,
a >16 KiB junction target passes the old `> u16::MAX` length check yet
overflows the inline reparse stack buffer. This test must fail on master
and pass once the fix lands.
@rustbotrustbot
added

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r? @joboet
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They will have a look at your PR within the next two weeks and either review your PR or reassign to another reviewer.
Use r? to explicitly pick a reviewer
Why was this reviewer chosen?
The reviewer was selected based on:
  • Owners of files modified in this PR: @ChrisDenton, libs
  • @ChrisDenton, libs expanded to 12 candidates
  • Random selection from Darksonn, Mark-Simulacrum, clarfonthey, jhpratt, joboet
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⚠️Warning⚠️
  • There are issue links (such as #123) in the commit messages of the following commits.
    Please move them to the PR description, to avoid spamming the issues with references to the commit, and so this bot can automatically canonicalize them to avoid issues with subtree.
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Auto merge of#158201- devnexen:junction_point_overflow_test, r=<try>
ac86b29
std: regression test for Windows junction_point stack buffer overflow
@ChrisDenton
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By default @bors try only tests linux. To test windows you need to select the jobs to run. See the dev guide's section on try builds.
@bors try jobs=x86_64-msvc-1,x86_64-msvc-2
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@bors
Auto merge of#158201- devnexen:junction_point_overflow_test, r=<try>
4b1b77e
std: regression test for Windows junction_point stack buffer overflow
try-job: x86_64-msvc-1
try-job: x86_64-msvc-2
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Ah, thanks.
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The job x86_64-msvc-1 failed! Check out the build log: (web)(plain enhanced)(plain)
Click to see the possible cause of the failure (guessed by this bot)
test fs::tests::invalid_path_raises ... ok
error: test failed, to rerun pass `-p std --lib`
Caused by:
process didn't exit successfully: `D:\a\rust\rust\build\x86_64-pc-windows-msvc\stage2-std\x86_64-pc-windows-msvc\dist\deps\std-409e131965b35c7e.exe -Z unstable-options --format json` (exit code: 0xc0000005, STATUS_ACCESS_VIOLATION)
note: test exited abnormally; to see the full output pass --no-capture to the harness.
Bootstrap failed while executing `test --stage 2 --skip=compiler --skip=src`
Build completed unsuccessfully in 1:59:34
make: *** [Makefile:115: ci-msvc-py] Error 1
local time: Sun Jun 21 11:16:25 CUT 2026
network time: Sun, 21 Jun 2026 11:16:25 GMT
##[error]Process completed with exit code 2.
##[group]Run echo "disk usage:"
echo "disk usage:"

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Can I close it ?
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💔 Test for 4b1b77e failed: CI. Failed job:
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Thanks!
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@devnexen@rustbot@Darksonn@ChrisDenton@rust-log-analyzer@joboet

, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Remove or un-stick sticky/fixed headers that block content\n(function() {\n function unstick() {\n document.querySelectorAll('header, nav, [role=\"banner\"], .header, .navbar, .sticky, .fixed-top, [style*=\"position: fixed\"], [style*=\"position:sticky\"]').forEach(function(el) {\n if (el.style.position === 'fixed' || el.style.position === 'sticky' || \n getComputedStyle(el).position === 'fixed' || getComputedStyle(el).position === 'sticky') {\n el.style.position = 'static';\n el.style.top = 'auto';\n el.style.zIndex = 'auto';\n }\n });\n }\n \n unstick();\n \n var observer = new MutationObserver(unstick);\n observer.observe(document.body, { childList: true, subtree: true, attributes: true, attributeFilter: ['style', 'class'] });\n})();", "Kill Sticky Headers");
}
} catch(__e) { console.warn('[Userscript:Kill Sticky Headers]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

Skip to content
std: regression test for Windows junction_point stack buffer overflow - #158201
Closed
devnexen wants to merge 1 commit into
rust-lang:mainfrom 
devnexen:junction_point_overflow_test
Closed
std: regression test for Windows junction_point stack buffer overflow#158201
devnexen wants to merge 1 commit into
rust-lang:mainfrom 
devnexen:junction_point_overflow_test
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@devnexen
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Temporary CI-verification test for #158147. Without the fix, a >16 KiB junction target passes the old > u16::MAX length check yet overflows the inline reparse stack buffer. This test must fail on master and pass once the fix lands.
@devnexen
std: regression test for Windows junction_point stack buffer overflow
7930d02
Temporary CI-verification test for rust-lang#158147. Without the fix,
a >16 KiB junction target passes the old `> u16::MAX` length check yet
overflows the inline reparse stack buffer. This test must fail on master
and pass once the fix lands.
@rustbotrustbot
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They will have a look at your PR within the next two weeks and either review your PR or reassign to another reviewer.
Use r? to explicitly pick a reviewer
Why was this reviewer chosen?
The reviewer was selected based on:
  • Owners of files modified in this PR: @ChrisDenton, libs
  • @ChrisDenton, libs expanded to 12 candidates
  • Random selection from Darksonn, Mark-Simulacrum, clarfonthey, jhpratt, joboet
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⚠️Warning⚠️
  • There are issue links (such as #123) in the commit messages of the following commits.
    Please move them to the PR description, to avoid spamming the issues with references to the commit, and so this bot can automatically canonicalize them to avoid issues with subtree.
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Auto merge of#158201- devnexen:junction_point_overflow_test, r=<try>
ac86b29
std: regression test for Windows junction_point stack buffer overflow
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By default @bors try only tests linux. To test windows you need to select the jobs to run. See the dev guide's section on try builds.
@bors try jobs=x86_64-msvc-1,x86_64-msvc-2
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Auto merge of#158201- devnexen:junction_point_overflow_test, r=<try>
4b1b77e
std: regression test for Windows junction_point stack buffer overflow
try-job: x86_64-msvc-1
try-job: x86_64-msvc-2
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Ah, thanks.
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The job x86_64-msvc-1 failed! Check out the build log: (web)(plain enhanced)(plain)
Click to see the possible cause of the failure (guessed by this bot)
test fs::tests::invalid_path_raises ... ok
error: test failed, to rerun pass `-p std --lib`
Caused by:
process didn't exit successfully: `D:\a\rust\rust\build\x86_64-pc-windows-msvc\stage2-std\x86_64-pc-windows-msvc\dist\deps\std-409e131965b35c7e.exe -Z unstable-options --format json` (exit code: 0xc0000005, STATUS_ACCESS_VIOLATION)
note: test exited abnormally; to see the full output pass --no-capture to the harness.
Bootstrap failed while executing `test --stage 2 --skip=compiler --skip=src`
Build completed unsuccessfully in 1:59:34
make: *** [Makefile:115: ci-msvc-py] Error 1
local time: Sun Jun 21 11:16:25 CUT 2026
network time: Sun, 21 Jun 2026 11:16:25 GMT
##[error]Process completed with exit code 2.
##[group]Run echo "disk usage:"
echo "disk usage:"

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Can I close it ?
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💔 Test for 4b1b77e failed: CI. Failed job:
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Thanks!
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, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Universal Dark Mode - works on any site\n(function() {\n var enabled = true;\n \n function applyDarkMode() {\n if (!enabled) return;\n \n // Create style element if it doesn't exist\n var style = document.getElementById('universal-dark-mode-style');\n if (!style) {\n style = document.createElement('style');\n style.id = 'universal-dark-mode-style';\n document.head.appendChild(style);\n }\n \n // Dark mode CSS - inverts colors but preserves images/video\n style.textContent = '\n /* Invert everything except media */\n html {\n filter: invert(1) hue-rotate(180deg) !important;\n background: #1a1a2e !important;\n }\n \n /* Restore images, videos, iframes, canvas */\n img, video, iframe, canvas, svg, picture, [style*=\"background-image\"] {\n filter: invert(1) hue-rotate(180deg) !important;\n }\n \n /* Preserve specific elements that should not be inverted */\n .no-dark-mode, .no-dark-mode *,\n [data-theme=\"light\"], [data-theme=\"light\"],\n .ace_editor, .ace_editor *,\n .CodeMirror, .CodeMirror *,\n .monaco-editor, .monaco-editor *,\n .markdown-body pre, .markdown-body pre *,\n .highlight, .highlight *,\n pre code, pre code * {\n filter: none !important;\n }\n \n /* Fix common UI elements */\n .modal, .popup, .dropdown-menu, .tooltip, .popover {\n filter: invert(1) hue-rotate(180deg) !important;\n background: #2d2d44 !important;\n border-color: #444 !important;\n }\n \n /* Scrollbars */\n ::-webkit-scrollbar { background: #1a1a2e !important; }\n ::-webkit-scrollbar-thumb { background: #444 !important; }\n ::-webkit-scrollbar-thumb:hover { background: #555 !important; }\n \n /* Selection */\n ::selection { background: #4ecdc4 !important; color: #1a1a2e !important; }\n ::-moz-selection { background: #4ecdc4 !important; color: #1a1a2e !important; }\n ';\n }\n \n function removeDarkMode() {\n var style = document.getElementById('universal-dark-mode-style');\n if (style) style.remove();\n }\n \n // Toggle with Alt+Shift+D\n document.addEventListener('keydown', function(e) {\n if (e.altKey && e.shiftKey && e.key === 'D') {\n e.preventDefault();\n enabled = !enabled;\n if (enabled) {\n applyDarkMode();\n console.log('[Universal Dark Mode] Enabled');\n } else {\n removeDarkMode();\n console.log('[Universal Dark Mode] Disabled');\n }\n }\n });\n \n // Apply on load\n applyDarkMode();\n \n // Re-apply on dynamic content\n var observer = new MutationObserver(function(mutations) {\n if (enabled && !document.getElementById('universal-dark-mode-style')) {\n applyDarkMode();\n }\n });\n observer.observe(document.head, { childList: true });\n \n console.log('[Universal Dark Mode] Loaded - Press Alt+Shift+D to toggle');\n})();", "Universal Dark Mode");
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} catch(__e) { console.warn('[Userscript:Universal Dark Mode]', __e); }
})();
})();

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std: regression test for Windows junction_point stack buffer overflow - #158201
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devnexen:junction_point_overflow_test
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std: regression test for Windows junction_point stack buffer overflow#158201
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devnexen:junction_point_overflow_test
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Temporary CI-verification test for #158147. Without the fix, a >16 KiB junction target passes the old > u16::MAX length check yet overflows the inline reparse stack buffer. This test must fail on master and pass once the fix lands.
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std: regression test for Windows junction_point stack buffer overflow
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Temporary CI-verification test for rust-lang#158147. Without the fix,
a >16 KiB junction target passes the old `> u16::MAX` length check yet
overflows the inline reparse stack buffer. This test must fail on master
and pass once the fix lands.
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r? @joboet
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They will have a look at your PR within the next two weeks and either review your PR or reassign to another reviewer.
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  • Owners of files modified in this PR: @ChrisDenton, libs
  • @ChrisDenton, libs expanded to 12 candidates
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⚠️Warning⚠️
  • There are issue links (such as #123) in the commit messages of the following commits.
    Please move them to the PR description, to avoid spamming the issues with references to the commit, and so this bot can automatically canonicalize them to avoid issues with subtree.
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r? @Darksonn
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assigned Darksonn and unassigned joboetJun 21, 2026
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@bors try
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Auto merge of#158201- devnexen:junction_point_overflow_test, r=<try>
ac86b29
std: regression test for Windows junction_point stack buffer overflow
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By default @bors try only tests linux. To test windows you need to select the jobs to run. See the dev guide's section on try builds.
@bors try jobs=x86_64-msvc-1,x86_64-msvc-2
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Auto merge of#158201- devnexen:junction_point_overflow_test, r=<try>
4b1b77e
std: regression test for Windows junction_point stack buffer overflow
try-job: x86_64-msvc-1
try-job: x86_64-msvc-2
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Ah, thanks.
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The job x86_64-msvc-1 failed! Check out the build log: (web)(plain enhanced)(plain)
Click to see the possible cause of the failure (guessed by this bot)
test fs::tests::invalid_path_raises ... ok
error: test failed, to rerun pass `-p std --lib`
Caused by:
process didn't exit successfully: `D:\a\rust\rust\build\x86_64-pc-windows-msvc\stage2-std\x86_64-pc-windows-msvc\dist\deps\std-409e131965b35c7e.exe -Z unstable-options --format json` (exit code: 0xc0000005, STATUS_ACCESS_VIOLATION)
note: test exited abnormally; to see the full output pass --no-capture to the harness.
Bootstrap failed while executing `test --stage 2 --skip=compiler --skip=src`
Build completed unsuccessfully in 1:59:34
make: *** [Makefile:115: ci-msvc-py] Error 1
local time: Sun Jun 21 11:16:25 CUT 2026
network time: Sun, 21 Jun 2026 11:16:25 GMT
##[error]Process completed with exit code 2.
##[group]Run echo "disk usage:"
echo "disk usage:"

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Can I close it ?
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💔 Test for 4b1b77e failed: CI. Failed job:
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Thanks!
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