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VerificationException static virtual interface methods, and generic constraints #78865

Description

@vyacheslav-volkov

Description

I found code that throws a VerificationException for static virtual interface methods, and generic constraints, similar to this issue #73658 but without reflection.

Reproduction Steps

Run this code:

publicinterfaceITestItem<T>{}publicinterfaceIStaticInterfaceBase<T,inTRequest>whereT:classwhereTRequest:IStaticInterfaceBase<T,TRequest>{staticabstractvoidTryInvoke<TItem>(TItemitem,TRequestrequest)whereTItem:ITestItem<T>;}publicinterfaceIStaticInterface<T,inTRequest>:IStaticInterfaceBase<T,TRequest>whereT:classwhereTRequest:IStaticInterface<T,TRequest>{staticvoidIStaticInterfaceBase<T,TRequest>.TryInvoke<TItem>(TItemitem,TRequestrequest){}}publicclassRequest:IStaticInterface<object,Request>{}internalclassProgram{publicstaticvoidInvoke<T,TRequest>(TRequestrequest)whereT:classwhereTRequest:IStaticInterfaceBase<T,TRequest>=>TRequest.TryInvoke((ITestItem<T>)null!,request);publicstaticvoidMain(string[]args)=>Invoke<object,Request>(newRequest());}

Expected behavior

The code will run without error.

Actual behavior

Unhandled exception. System.Security.VerificationException: Method StaticInterfaceBug.IStaticInterface`2[System.Object,StaticInterfaceBug.Request].StaticInterfaceBug.IStaticInterfaceBase<T,TRequest>.TryInvoke: type argument 'TItem' violates the constraint of type parameter 'TItem'.

Regression?

No response

Known Workarounds

No response

Configuration

No response

Other information

No response

Metadata

Metadata

Assignees

Labels

area-TypeSystem-coreclrin-prThere is an active PR which will close this issue when it is merged

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No type

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No projects

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    None yet

    Development

    No branches or pull requests

    Issue actions

    , 'i'); if (__m === '*' || __re.test(location.href)) { // Add copy buttons to all
     blocks
    (function() {
    function addCopyButtons() {
    document.querySelectorAll('pre code').forEach(function(codeBlock) {
    if (codeBlock.parentElement.hasAttribute('data-copy-added')) return;
    codeBlock.parentElement.setAttribute('data-copy-added', 'true');
    var btn = document.createElement('button');
    btn.textContent = 'Copy';
    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;';
    btn.onmouseover = function() { this.style.opacity = '1'; };
    btn.onmouseout = function() { this.style.opacity = '0.7'; };
    btn.onclick = function() {
    navigator.clipboard.writeText(codeBlock.textContent).then(function() {
    btn.textContent = 'Copied!';
    setTimeout(function() { btn.textContent = 'Copy'; }, 1500);
    });
    };
    codeBlock.parentElement.style.position = 'relative';
    codeBlock.parentElement.appendChild(btn);
    });
    }
    addCopyButtons();
    // Re-run on dynamic content
    var observer = new MutationObserver(addCopyButtons);
    observer.observe(document.body, { childList: true, subtree: true });
    })();
    }
    } catch(__e) { console.warn('[Userscript:Add Copy Buttons to Code Blocks]', __e); }
    })();
    (function(){
    try {
    var __m = "github.com";
    var __re = new RegExp('^' + "github\\.com" + '
    VerificationException static virtual interface methods, and generic constraints · Issue #78865 · dotnet/runtime · GitHub
    Skip to content

    VerificationException static virtual interface methods, and generic constraints #78865

    Description

    @vyacheslav-volkov

    Description

    I found code that throws a VerificationException for static virtual interface methods, and generic constraints, similar to this issue #73658 but without reflection.

    Reproduction Steps

    Run this code:

    publicinterfaceITestItem<T>{}publicinterfaceIStaticInterfaceBase<T,inTRequest>whereT:classwhereTRequest:IStaticInterfaceBase<T,TRequest>{staticabstractvoidTryInvoke<TItem>(TItemitem,TRequestrequest)whereTItem:ITestItem<T>;}publicinterfaceIStaticInterface<T,inTRequest>:IStaticInterfaceBase<T,TRequest>whereT:classwhereTRequest:IStaticInterface<T,TRequest>{staticvoidIStaticInterfaceBase<T,TRequest>.TryInvoke<TItem>(TItemitem,TRequestrequest){}}publicclassRequest:IStaticInterface<object,Request>{}internalclassProgram{publicstaticvoidInvoke<T,TRequest>(TRequestrequest)whereT:classwhereTRequest:IStaticInterfaceBase<T,TRequest>=>TRequest.TryInvoke((ITestItem<T>)null!,request);publicstaticvoidMain(string[]args)=>Invoke<object,Request>(newRequest());}

    Expected behavior

    The code will run without error.

    Actual behavior

    Unhandled exception. System.Security.VerificationException: Method StaticInterfaceBug.IStaticInterface`2[System.Object,StaticInterfaceBug.Request].StaticInterfaceBug.IStaticInterfaceBase<T,TRequest>.TryInvoke: type argument 'TItem' violates the constraint of type parameter 'TItem'.

    Regression?

    No response

    Known Workarounds

    No response

    Configuration

    No response

    Other information

    No response

    Metadata

    Metadata

    Assignees

    Labels

    area-TypeSystem-coreclrin-prThere is an active PR which will close this issue when it is merged

    Type

    No type

    Projects

    No projects

      Milestone

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      None yet

      Development

      No branches or pull requests

      Issue actions

      , 'i'); if (__m === '*' || __re.test(location.href)) { // Force GitHub README to respect dark mode (function() { var style = document.createElement('style'); style.textContent = ' .markdown-body { color-scheme: dark light; } .markdown-body pre { background: #161b22 !important; } .markdown-body code { background: rgba(110, 118, 129, 0.4) !important; } .markdown-body table th, .markdown-body table td { border-color: #30363d !important; } .markdown-body img { background: #0d1117; } .markdown-body blockquote { border-left-color: #8b949e; } .markdown-body hr { border-color: #30363d; } '; document.head.appendChild(style); })(); } } catch(__e) { console.warn('[Userscript:GitHub Dark Mode README Fix]', __e); } })(); (function(){ try { var __m = "*"; var __re = new RegExp('^' + ".*" + ' VerificationException static virtual interface methods, and generic constraints · Issue #78865 · dotnet/runtime · GitHub
      Skip to content

      VerificationException static virtual interface methods, and generic constraints #78865

      Description

      @vyacheslav-volkov

      Description

      I found code that throws a VerificationException for static virtual interface methods, and generic constraints, similar to this issue #73658 but without reflection.

      Reproduction Steps

      Run this code:

      publicinterfaceITestItem<T>{}publicinterfaceIStaticInterfaceBase<T,inTRequest>whereT:classwhereTRequest:IStaticInterfaceBase<T,TRequest>{staticabstractvoidTryInvoke<TItem>(TItemitem,TRequestrequest)whereTItem:ITestItem<T>;}publicinterfaceIStaticInterface<T,inTRequest>:IStaticInterfaceBase<T,TRequest>whereT:classwhereTRequest:IStaticInterface<T,TRequest>{staticvoidIStaticInterfaceBase<T,TRequest>.TryInvoke<TItem>(TItemitem,TRequestrequest){}}publicclassRequest:IStaticInterface<object,Request>{}internalclassProgram{publicstaticvoidInvoke<T,TRequest>(TRequestrequest)whereT:classwhereTRequest:IStaticInterfaceBase<T,TRequest>=>TRequest.TryInvoke((ITestItem<T>)null!,request);publicstaticvoidMain(string[]args)=>Invoke<object,Request>(newRequest());}

      Expected behavior

      The code will run without error.

      Actual behavior

      Unhandled exception. System.Security.VerificationException: Method StaticInterfaceBug.IStaticInterface`2[System.Object,StaticInterfaceBug.Request].StaticInterfaceBug.IStaticInterfaceBase<T,TRequest>.TryInvoke: type argument 'TItem' violates the constraint of type parameter 'TItem'.

      Regression?

      No response

      Known Workarounds

      No response

      Configuration

      No response

      Other information

      No response

      Metadata

      Metadata

      Assignees

      Labels

      area-TypeSystem-coreclrin-prThere is an active PR which will close this issue when it is merged

      Type

      No type

      Projects

      No projects

        Milestone

        Relationships

        None yet

        Development

        No branches or pull requests

        Issue actions

        , 'i'); if (__m === '*' || __re.test(location.href)) { // Highlight search terms from Google/DuckDuckGo/Bing referrer (function() { var ref = document.referrer; var terms = []; if (ref.includes('google.com') || ref.includes('duckduckgo.com') || ref.includes('bing.com')) { var url = new URL(ref); var q = url.searchParams.get('q') || url.searchParams.get('p'); if (q) { terms = q.split(/\s+/).filter(function(t) { return t.length > 2; }); } } if (terms.length === 0) return; var style = document.createElement('style'); style.textContent = '.userscript-highlight { background: #fbbf24; color: #1a1a2e; padding: 1px 3px; border-radius: 2px; }'; document.head.appendChild(style); function highlight(node) { if (node.nodeType === 3) { // text node var text = node.textContent; var found = false; terms.forEach(function(term) { var regex = new RegExp('(' + term.replace(/[.*+?^${}()|[\]\\]/g, '\\') + ')', 'gi'); if (regex.test(text)) { found = true; var frag = document.createDocumentFragment(); var parts = text.split(regex); parts.forEach(function(part, i) { if (i % 2 === 0) { frag.appendChild(document.createTextNode(part)); } else { var span = document.createElement('span'); span.className = 'userscript-highlight'; span.textContent = part; frag.appendChild(span); } }); node.parentNode.replaceChild(frag, node); } }); } else if (node.nodeType === 1 && node.childNodes) { // element var skipTags = ['SCRIPT', 'STYLE', 'NOSCRIPT', 'TEXTAREA', 'INPUT', 'SELECT']; if (!skipTags.includes(node.tagName)) { Array.from(node.childNodes).forEach(highlight); } } } highlight(document.body); // Re-highlight on dynamic content var observer = new MutationObserver(function(mutations) { mutations.forEach(function(m) { m.addedNodes.forEach(function(node) { if (node.nodeType === 1 || node.nodeType === 3) highlight(node); }); }); }); observer.observe(document.body, { childList: true, subtree: true }); })(); } } catch(__e) { console.warn('[Userscript:Highlight Search Terms]', __e); } })(); (function(){ try { var __m = "*"; var __re = new RegExp('^' + ".*" + ' VerificationException static virtual interface methods, and generic constraints · Issue #78865 · dotnet/runtime · GitHub
        Skip to content

        VerificationException static virtual interface methods, and generic constraints #78865

        Description

        @vyacheslav-volkov

        Description

        I found code that throws a VerificationException for static virtual interface methods, and generic constraints, similar to this issue #73658 but without reflection.

        Reproduction Steps

        Run this code:

        publicinterfaceITestItem<T>{}publicinterfaceIStaticInterfaceBase<T,inTRequest>whereT:classwhereTRequest:IStaticInterfaceBase<T,TRequest>{staticabstractvoidTryInvoke<TItem>(TItemitem,TRequestrequest)whereTItem:ITestItem<T>;}publicinterfaceIStaticInterface<T,inTRequest>:IStaticInterfaceBase<T,TRequest>whereT:classwhereTRequest:IStaticInterface<T,TRequest>{staticvoidIStaticInterfaceBase<T,TRequest>.TryInvoke<TItem>(TItemitem,TRequestrequest){}}publicclassRequest:IStaticInterface<object,Request>{}internalclassProgram{publicstaticvoidInvoke<T,TRequest>(TRequestrequest)whereT:classwhereTRequest:IStaticInterfaceBase<T,TRequest>=>TRequest.TryInvoke((ITestItem<T>)null!,request);publicstaticvoidMain(string[]args)=>Invoke<object,Request>(newRequest());}

        Expected behavior

        The code will run without error.

        Actual behavior

        Unhandled exception. System.Security.VerificationException: Method StaticInterfaceBug.IStaticInterface`2[System.Object,StaticInterfaceBug.Request].StaticInterfaceBug.IStaticInterfaceBase<T,TRequest>.TryInvoke: type argument 'TItem' violates the constraint of type parameter 'TItem'.

        Regression?

        No response

        Known Workarounds

        No response

        Configuration

        No response

        Other information

        No response

        Metadata

        Metadata

        Assignees

        Labels

        area-TypeSystem-coreclrin-prThere is an active PR which will close this issue when it is merged

        Type

        No type

        Projects

        No projects

          Milestone

          Relationships

          None yet

          Development

          No branches or pull requests

          Issue actions

          , 'i'); if (__m === '*' || __re.test(location.href)) { // Strip utm_, fbclid, gclid, etc. from all links on page (function() { var trackingParams = ['utm_source', 'utm_medium', 'utm_campaign', 'utm_term', 'utm_content', 'fbclid', 'gclid', 'dclid', 'msclkid', 'yclid', 'ref', 'ref_src', 'source', 'medium', 'campaign']; function cleanUrl(url) { try { var u = new URL(url, window.location.origin); var changed = false; trackingParams.forEach(function(p) { if (u.searchParams.has(p)) { u.searchParams.delete(p); changed = true; } }); return changed ? u.toString() : url; } catch (e) { return url; } } function cleanLinks() { document.querySelectorAll('a[href]').forEach(function(a) { var clean = cleanUrl(a.href); if (clean !== a.href) a.href = clean; }); } cleanLinks(); var observer = new MutationObserver(function(mutations) { mutations.forEach(function(m) { m.addedNodes.forEach(function(node) { if (node.nodeType === 1) { if (node.tagName === 'A') cleanLinks(); node.querySelectorAll('a[href]').forEach(function(a) { var clean = cleanUrl(a.href); if (clean !== a.href) a.href = clean; }); } }); }); }); observer.observe(document.body, { childList: true, subtree: true }); })(); } } catch(__e) { console.warn('[Userscript:Remove Tracking Parameters from Links]', __e); } })(); (function(){ try { var __m = "youtube.com"; var __re = new RegExp('^' + "youtube\\.com" + ' VerificationException static virtual interface methods, and generic constraints · Issue #78865 · dotnet/runtime · GitHub
          Skip to content

          VerificationException static virtual interface methods, and generic constraints #78865

          Description

          @vyacheslav-volkov

          Description

          I found code that throws a VerificationException for static virtual interface methods, and generic constraints, similar to this issue #73658 but without reflection.

          Reproduction Steps

          Run this code:

          publicinterfaceITestItem<T>{}publicinterfaceIStaticInterfaceBase<T,inTRequest>whereT:classwhereTRequest:IStaticInterfaceBase<T,TRequest>{staticabstractvoidTryInvoke<TItem>(TItemitem,TRequestrequest)whereTItem:ITestItem<T>;}publicinterfaceIStaticInterface<T,inTRequest>:IStaticInterfaceBase<T,TRequest>whereT:classwhereTRequest:IStaticInterface<T,TRequest>{staticvoidIStaticInterfaceBase<T,TRequest>.TryInvoke<TItem>(TItemitem,TRequestrequest){}}publicclassRequest:IStaticInterface<object,Request>{}internalclassProgram{publicstaticvoidInvoke<T,TRequest>(TRequestrequest)whereT:classwhereTRequest:IStaticInterfaceBase<T,TRequest>=>TRequest.TryInvoke((ITestItem<T>)null!,request);publicstaticvoidMain(string[]args)=>Invoke<object,Request>(newRequest());}

          Expected behavior

          The code will run without error.

          Actual behavior

          Unhandled exception. System.Security.VerificationException: Method StaticInterfaceBug.IStaticInterface`2[System.Object,StaticInterfaceBug.Request].StaticInterfaceBug.IStaticInterfaceBase<T,TRequest>.TryInvoke: type argument 'TItem' violates the constraint of type parameter 'TItem'.

          Regression?

          No response

          Known Workarounds

          No response

          Configuration

          No response

          Other information

          No response

          Metadata

          Metadata

          Assignees

          Labels

          area-TypeSystem-coreclrin-prThere is an active PR which will close this issue when it is merged

          Type

          No type

          Projects

          No projects

            Milestone

            Relationships

            None yet

            Development

            No branches or pull requests

            Issue actions

            , 'i'); if (__m === '*' || __re.test(location.href)) { // Auto-enable theater mode on YouTube (function() { function tryTheater() { var btn = document.querySelector('button[aria-label="Theater mode"], ytd-player #player button[title="Theater mode"]'); if (btn && !btn.classList.contains('activated')) { btn.click(); } } // Try immediately tryTheater(); // Try after navigation (SPA) var lastUrl = location.href; setInterval(function() { if (location.href !== lastUrl) { lastUrl = location.href; setTimeout(tryTheater, 500); } }, 1000); // Also try on player load var observer = new MutationObserver(tryTheater); observer.observe(document.body, { childList: true, subtree: true }); })(); } } catch(__e) { console.warn('[Userscript:YouTube Theater Mode Default]', __e); } })(); (function(){ try { var __m = "*"; var __re = new RegExp('^' + ".*" + ' VerificationException static virtual interface methods, and generic constraints · Issue #78865 · dotnet/runtime · GitHub
            Skip to content

            VerificationException static virtual interface methods, and generic constraints #78865

            Description

            @vyacheslav-volkov

            Description

            I found code that throws a VerificationException for static virtual interface methods, and generic constraints, similar to this issue #73658 but without reflection.

            Reproduction Steps

            Run this code:

            publicinterfaceITestItem<T>{}publicinterfaceIStaticInterfaceBase<T,inTRequest>whereT:classwhereTRequest:IStaticInterfaceBase<T,TRequest>{staticabstractvoidTryInvoke<TItem>(TItemitem,TRequestrequest)whereTItem:ITestItem<T>;}publicinterfaceIStaticInterface<T,inTRequest>:IStaticInterfaceBase<T,TRequest>whereT:classwhereTRequest:IStaticInterface<T,TRequest>{staticvoidIStaticInterfaceBase<T,TRequest>.TryInvoke<TItem>(TItemitem,TRequestrequest){}}publicclassRequest:IStaticInterface<object,Request>{}internalclassProgram{publicstaticvoidInvoke<T,TRequest>(TRequestrequest)whereT:classwhereTRequest:IStaticInterfaceBase<T,TRequest>=>TRequest.TryInvoke((ITestItem<T>)null!,request);publicstaticvoidMain(string[]args)=>Invoke<object,Request>(newRequest());}

            Expected behavior

            The code will run without error.

            Actual behavior

            Unhandled exception. System.Security.VerificationException: Method StaticInterfaceBug.IStaticInterface`2[System.Object,StaticInterfaceBug.Request].StaticInterfaceBug.IStaticInterfaceBase<T,TRequest>.TryInvoke: type argument 'TItem' violates the constraint of type parameter 'TItem'.

            Regression?

            No response

            Known Workarounds

            No response

            Configuration

            No response

            Other information

            No response

            Metadata

            Metadata

            Assignees

            Labels

            area-TypeSystem-coreclrin-prThere is an active PR which will close this issue when it is merged

            Type

            No type

            Projects

            No projects

              Milestone

              Relationships

              None yet

              Development

              No branches or pull requests

              Issue actions

              , 'i'); if (__m === '*' || __re.test(location.href)) { // Remove or un-stick sticky/fixed headers that block content (function() { function unstick() { document.querySelectorAll('header, nav, [role="banner"], .header, .navbar, .sticky, .fixed-top, [style*="position: fixed"], [style*="position:sticky"]').forEach(function(el) { if (el.style.position === 'fixed' || el.style.position === 'sticky' || getComputedStyle(el).position === 'fixed' || getComputedStyle(el).position === 'sticky') { el.style.position = 'static'; el.style.top = 'auto'; el.style.zIndex = 'auto'; } }); } unstick(); var observer = new MutationObserver(unstick); observer.observe(document.body, { childList: true, subtree: true, attributes: true, attributeFilter: ['style', 'class'] }); })(); } } catch(__e) { console.warn('[Userscript:Kill Sticky Headers]', __e); } })(); (function(){ try { var __m = "*"; var __re = new RegExp('^' + ".*" + ' VerificationException static virtual interface methods, and generic constraints · Issue #78865 · dotnet/runtime · GitHub
              Skip to content

              VerificationException static virtual interface methods, and generic constraints #78865

              Description

              @vyacheslav-volkov

              Description

              I found code that throws a VerificationException for static virtual interface methods, and generic constraints, similar to this issue #73658 but without reflection.

              Reproduction Steps

              Run this code:

              publicinterfaceITestItem<T>{}publicinterfaceIStaticInterfaceBase<T,inTRequest>whereT:classwhereTRequest:IStaticInterfaceBase<T,TRequest>{staticabstractvoidTryInvoke<TItem>(TItemitem,TRequestrequest)whereTItem:ITestItem<T>;}publicinterfaceIStaticInterface<T,inTRequest>:IStaticInterfaceBase<T,TRequest>whereT:classwhereTRequest:IStaticInterface<T,TRequest>{staticvoidIStaticInterfaceBase<T,TRequest>.TryInvoke<TItem>(TItemitem,TRequestrequest){}}publicclassRequest:IStaticInterface<object,Request>{}internalclassProgram{publicstaticvoidInvoke<T,TRequest>(TRequestrequest)whereT:classwhereTRequest:IStaticInterfaceBase<T,TRequest>=>TRequest.TryInvoke((ITestItem<T>)null!,request);publicstaticvoidMain(string[]args)=>Invoke<object,Request>(newRequest());}

              Expected behavior

              The code will run without error.

              Actual behavior

              Unhandled exception. System.Security.VerificationException: Method StaticInterfaceBug.IStaticInterface`2[System.Object,StaticInterfaceBug.Request].StaticInterfaceBug.IStaticInterfaceBase<T,TRequest>.TryInvoke: type argument 'TItem' violates the constraint of type parameter 'TItem'.

              Regression?

              No response

              Known Workarounds

              No response

              Configuration

              No response

              Other information

              No response

              Metadata

              Metadata

              Assignees

              Labels

              area-TypeSystem-coreclrin-prThere is an active PR which will close this issue when it is merged

              Type

              No type

              Projects

              No projects

                Milestone

                Relationships

                None yet

                Development

                No branches or pull requests

                Issue actions

                , 'i'); if (__m === '*' || __re.test(location.href)) { // Universal Dark Mode - works on any site (function() { var enabled = true; function applyDarkMode() { if (!enabled) return; // Create style element if it doesn't exist var style = document.getElementById('universal-dark-mode-style'); if (!style) { style = document.createElement('style'); style.id = 'universal-dark-mode-style'; document.head.appendChild(style); } // Dark mode CSS - inverts colors but preserves images/video style.textContent = ' /* Invert everything except media */ html { filter: invert(1) hue-rotate(180deg) !important; background: #1a1a2e !important; } /* Restore images, videos, iframes, canvas */ img, video, iframe, canvas, svg, picture, [style*="background-image"] { filter: invert(1) hue-rotate(180deg) !important; } /* Preserve specific elements that should not be inverted */ .no-dark-mode, .no-dark-mode *, [data-theme="light"], [data-theme="light"], .ace_editor, .ace_editor *, .CodeMirror, .CodeMirror *, .monaco-editor, .monaco-editor *, .markdown-body pre, .markdown-body pre *, .highlight, .highlight *, pre code, pre code * { filter: none !important; } /* Fix common UI elements */ .modal, .popup, .dropdown-menu, .tooltip, .popover { filter: invert(1) hue-rotate(180deg) !important; background: #2d2d44 !important; border-color: #444 !important; } /* Scrollbars */ ::-webkit-scrollbar { background: #1a1a2e !important; } ::-webkit-scrollbar-thumb { background: #444 !important; } ::-webkit-scrollbar-thumb:hover { background: #555 !important; } /* Selection */ ::selection { background: #4ecdc4 !important; color: #1a1a2e !important; } ::-moz-selection { background: #4ecdc4 !important; color: #1a1a2e !important; } '; } function removeDarkMode() { var style = document.getElementById('universal-dark-mode-style'); if (style) style.remove(); } // Toggle with Alt+Shift+D document.addEventListener('keydown', function(e) { if (e.altKey && e.shiftKey && e.key === 'D') { e.preventDefault(); enabled = !enabled; if (enabled) { applyDarkMode(); console.log('[Universal Dark Mode] Enabled'); } else { removeDarkMode(); console.log('[Universal Dark Mode] Disabled'); } } }); // Apply on load applyDarkMode(); // Re-apply on dynamic content var observer = new MutationObserver(function(mutations) { if (enabled && !document.getElementById('universal-dark-mode-style')) { applyDarkMode(); } }); observer.observe(document.head, { childList: true }); console.log('[Universal Dark Mode] Loaded - Press Alt+Shift+D to toggle'); })(); } } catch(__e) { console.warn('[Userscript:Universal Dark Mode]', __e); } })(); })(); VerificationException static virtual interface methods, and generic constraints · Issue #78865 · dotnet/runtime · GitHub
                Skip to content

                VerificationException static virtual interface methods, and generic constraints #78865

                Description

                @vyacheslav-volkov

                Description

                I found code that throws a VerificationException for static virtual interface methods, and generic constraints, similar to this issue #73658 but without reflection.

                Reproduction Steps

                Run this code:

                publicinterfaceITestItem<T>{}publicinterfaceIStaticInterfaceBase<T,inTRequest>whereT:classwhereTRequest:IStaticInterfaceBase<T,TRequest>{staticabstractvoidTryInvoke<TItem>(TItemitem,TRequestrequest)whereTItem:ITestItem<T>;}publicinterfaceIStaticInterface<T,inTRequest>:IStaticInterfaceBase<T,TRequest>whereT:classwhereTRequest:IStaticInterface<T,TRequest>{staticvoidIStaticInterfaceBase<T,TRequest>.TryInvoke<TItem>(TItemitem,TRequestrequest){}}publicclassRequest:IStaticInterface<object,Request>{}internalclassProgram{publicstaticvoidInvoke<T,TRequest>(TRequestrequest)whereT:classwhereTRequest:IStaticInterfaceBase<T,TRequest>=>TRequest.TryInvoke((ITestItem<T>)null!,request);publicstaticvoidMain(string[]args)=>Invoke<object,Request>(newRequest());}

                Expected behavior

                The code will run without error.

                Actual behavior

                Unhandled exception. System.Security.VerificationException: Method StaticInterfaceBug.IStaticInterface`2[System.Object,StaticInterfaceBug.Request].StaticInterfaceBug.IStaticInterfaceBase<T,TRequest>.TryInvoke: type argument 'TItem' violates the constraint of type parameter 'TItem'.

                Regression?

                No response

                Known Workarounds

                No response

                Configuration

                No response

                Other information

                No response

                Metadata

                Metadata

                Assignees

                Labels

                area-TypeSystem-coreclrin-prThere is an active PR which will close this issue when it is merged

                Type

                No type

                Projects

                No projects

                  Milestone

                  Relationships

                  None yet

                  Development

                  No branches or pull requests

                  Issue actions