zlib: zstdCompressSync() does not validate pledgedSrcSize #64600

Closed
Closed
zlib: zstdCompressSync() does not validate pledgedSrcSize#64600

Description

@Archkon
Archkon
opened on Jul 19, 2026

Version

latest main branch

Platform

7.1.3-arch1-3

Subsystem

zlib

What steps will reproduce the bug?

constassert=require('node:assert/strict');constzlib=require('node:zlib');constinput=Buffer.alloc(42);assert.throws(()=>zlib.zstdCompressSync(input,{pledgedSrcSize: 1,}),{code: 'ZSTD_error_srcSize_wrong',},);

How often does it reproduce? Is there a required condition?

Every Time

What is the expected behavior? Why is that the expected behavior?

zstdCompressSync() should throw an error with:

{code: 'ZSTD_error_srcSize_wrong',errno: zlib.constants.ZSTD_error_srcSize_wrong,}

What do you see instead?

Compression succeeds, causing assert.throws() to fail with

Additional information

The synchronous convenience API processes the input using the default final operation:

ZSTD_e_end

Therefore, its first compression call is effectively:

ZSTD_compressStream2(cctx, output, input, ZSTD_e_end);

Zstd has special behavior for this case. When the first call for a frame uses ZSTD_e_end, it replaces a previously configured pledged source size with the current input size.

Activity

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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" + '

      Skip to content
      zlib: zstdCompressSync() does not validate pledgedSrcSize #64600
      Closed
      Closed
      zlib: zstdCompressSync() does not validate pledgedSrcSize#64600
      Description
      @Archkon
      Archkon
      opened on Jul 19, 2026
      Version
      latest main branch
      Platform
      7.1.3-arch1-3

      Subsystem
      zlib
      What steps will reproduce the bug?
      constassert=require('node:assert/strict');constzlib=require('node:zlib');constinput=Buffer.alloc(42);assert.throws(()=>zlib.zstdCompressSync(input,{pledgedSrcSize: 1,}),{code: 'ZSTD_error_srcSize_wrong',},);
      How often does it reproduce? Is there a required condition?
      Every Time
      What is the expected behavior? Why is that the expected behavior?
      zstdCompressSync() should throw an error with:
      {code: 'ZSTD_error_srcSize_wrong',errno: zlib.constants.ZSTD_error_srcSize_wrong,}
      What do you see instead?
      Compression succeeds, causing assert.throws() to fail with
      Additional information
      The synchronous convenience API processes the input using the default final operation:
       ZSTD_e_end
      Therefore, its first compression call is effectively:
       ZSTD_compressStream2(cctx, output, input, ZSTD_e_end);
      Zstd has special behavior for this case. When the first call for a frame uses ZSTD_e_end, it replaces a previously configured pledged source size with the current input size.
      Activity
      Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment
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        Labels
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        No type
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        No projects
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          No milestone
          Relationships
          None yet
          Development
          No branches or pull requests
          Issue actions
          
, '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
          zlib: zstdCompressSync() does not validate pledgedSrcSize #64600
          Closed
          Closed
          zlib: zstdCompressSync() does not validate pledgedSrcSize#64600
          Description
          @Archkon
          Archkon
          opened on Jul 19, 2026
          Version
          latest main branch
          Platform
          7.1.3-arch1-3

          Subsystem
          zlib
          What steps will reproduce the bug?
          constassert=require('node:assert/strict');constzlib=require('node:zlib');constinput=Buffer.alloc(42);assert.throws(()=>zlib.zstdCompressSync(input,{pledgedSrcSize: 1,}),{code: 'ZSTD_error_srcSize_wrong',},);
          How often does it reproduce? Is there a required condition?
          Every Time
          What is the expected behavior? Why is that the expected behavior?
          zstdCompressSync() should throw an error with:
          {code: 'ZSTD_error_srcSize_wrong',errno: zlib.constants.ZSTD_error_srcSize_wrong,}
          What do you see instead?
          Compression succeeds, causing assert.throws() to fail with
          Additional information
          The synchronous convenience API processes the input using the default final operation:
           ZSTD_e_end
          Therefore, its first compression call is effectively:
           ZSTD_compressStream2(cctx, output, input, ZSTD_e_end);
          Zstd has special behavior for this case. When the first call for a frame uses ZSTD_e_end, it replaces a previously configured pledged source size with the current input size.
          Activity
          Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment
          Metadata
          Metadata
          Assignees
          No one assigned
            Labels
            No labels
            No labels
            Type
            No type
            Projects
            No projects
              Milestone
              No milestone
              Relationships
              None yet
              Development
              No branches or pull requests
              Issue actions
              
, '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
              zlib: zstdCompressSync() does not validate pledgedSrcSize #64600
              Closed
              Closed
              zlib: zstdCompressSync() does not validate pledgedSrcSize#64600
              Description
              @Archkon
              Archkon
              opened on Jul 19, 2026
              Version
              latest main branch
              Platform
              7.1.3-arch1-3

              Subsystem
              zlib
              What steps will reproduce the bug?
              constassert=require('node:assert/strict');constzlib=require('node:zlib');constinput=Buffer.alloc(42);assert.throws(()=>zlib.zstdCompressSync(input,{pledgedSrcSize: 1,}),{code: 'ZSTD_error_srcSize_wrong',},);
              How often does it reproduce? Is there a required condition?
              Every Time
              What is the expected behavior? Why is that the expected behavior?
              zstdCompressSync() should throw an error with:
              {code: 'ZSTD_error_srcSize_wrong',errno: zlib.constants.ZSTD_error_srcSize_wrong,}
              What do you see instead?
              Compression succeeds, causing assert.throws() to fail with
              Additional information
              The synchronous convenience API processes the input using the default final operation:
               ZSTD_e_end
              Therefore, its first compression call is effectively:
               ZSTD_compressStream2(cctx, output, input, ZSTD_e_end);
              Zstd has special behavior for this case. When the first call for a frame uses ZSTD_e_end, it replaces a previously configured pledged source size with the current input size.
              Activity
              Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment
              Metadata
              Metadata
              Assignees
              No one assigned
                Labels
                No labels
                No labels
                Type
                No type
                Projects
                No projects
                  Milestone
                  No milestone
                  Relationships
                  None yet
                  Development
                  No branches or pull requests
                  Issue actions
                  
, '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
                  zlib: zstdCompressSync() does not validate pledgedSrcSize #64600
                  Closed
                  Closed
                  zlib: zstdCompressSync() does not validate pledgedSrcSize#64600
                  Description
                  @Archkon
                  Archkon
                  opened on Jul 19, 2026
                  Version
                  latest main branch
                  Platform
                  7.1.3-arch1-3

                  Subsystem
                  zlib
                  What steps will reproduce the bug?
                  constassert=require('node:assert/strict');constzlib=require('node:zlib');constinput=Buffer.alloc(42);assert.throws(()=>zlib.zstdCompressSync(input,{pledgedSrcSize: 1,}),{code: 'ZSTD_error_srcSize_wrong',},);
                  How often does it reproduce? Is there a required condition?
                  Every Time
                  What is the expected behavior? Why is that the expected behavior?
                  zstdCompressSync() should throw an error with:
                  {code: 'ZSTD_error_srcSize_wrong',errno: zlib.constants.ZSTD_error_srcSize_wrong,}
                  What do you see instead?
                  Compression succeeds, causing assert.throws() to fail with
                  Additional information
                  The synchronous convenience API processes the input using the default final operation:
                   ZSTD_e_end
                  Therefore, its first compression call is effectively:
                   ZSTD_compressStream2(cctx, output, input, ZSTD_e_end);
                  Zstd has special behavior for this case. When the first call for a frame uses ZSTD_e_end, it replaces a previously configured pledged source size with the current input size.
                  Activity
                  Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment
                  Metadata
                  Metadata
                  Assignees
                  No one assigned
                    Labels
                    No labels
                    No labels
                    Type
                    No type
                    Projects
                    No projects
                      Milestone
                      No milestone
                      Relationships
                      None yet
                      Development
                      No branches or pull requests
                      Issue actions
                      
, '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
                      zlib: zstdCompressSync() does not validate pledgedSrcSize #64600
                      Closed
                      Closed
                      zlib: zstdCompressSync() does not validate pledgedSrcSize#64600
                      Description
                      @Archkon
                      Archkon
                      opened on Jul 19, 2026
                      Version
                      latest main branch
                      Platform
                      7.1.3-arch1-3

                      Subsystem
                      zlib
                      What steps will reproduce the bug?
                      constassert=require('node:assert/strict');constzlib=require('node:zlib');constinput=Buffer.alloc(42);assert.throws(()=>zlib.zstdCompressSync(input,{pledgedSrcSize: 1,}),{code: 'ZSTD_error_srcSize_wrong',},);
                      How often does it reproduce? Is there a required condition?
                      Every Time
                      What is the expected behavior? Why is that the expected behavior?
                      zstdCompressSync() should throw an error with:
                      {code: 'ZSTD_error_srcSize_wrong',errno: zlib.constants.ZSTD_error_srcSize_wrong,}
                      What do you see instead?
                      Compression succeeds, causing assert.throws() to fail with
                      Additional information
                      The synchronous convenience API processes the input using the default final operation:
                       ZSTD_e_end
                      Therefore, its first compression call is effectively:
                       ZSTD_compressStream2(cctx, output, input, ZSTD_e_end);
                      Zstd has special behavior for this case. When the first call for a frame uses ZSTD_e_end, it replaces a previously configured pledged source size with the current input size.
                      Activity
                      Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment
                      Metadata
                      Metadata
                      Assignees
                      No one assigned
                        Labels
                        No labels
                        No labels
                        Type
                        No type
                        Projects
                        No projects
                          Milestone
                          No milestone
                          Relationships
                          None yet
                          Development
                          No branches or pull requests
                          Issue actions
                          
, '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
                          zlib: zstdCompressSync() does not validate pledgedSrcSize #64600
                          Closed
                          Closed
                          zlib: zstdCompressSync() does not validate pledgedSrcSize#64600
                          Description
                          @Archkon
                          Archkon
                          opened on Jul 19, 2026
                          Version
                          latest main branch
                          Platform
                          7.1.3-arch1-3

                          Subsystem
                          zlib
                          What steps will reproduce the bug?
                          constassert=require('node:assert/strict');constzlib=require('node:zlib');constinput=Buffer.alloc(42);assert.throws(()=>zlib.zstdCompressSync(input,{pledgedSrcSize: 1,}),{code: 'ZSTD_error_srcSize_wrong',},);
                          How often does it reproduce? Is there a required condition?
                          Every Time
                          What is the expected behavior? Why is that the expected behavior?
                          zstdCompressSync() should throw an error with:
                          {code: 'ZSTD_error_srcSize_wrong',errno: zlib.constants.ZSTD_error_srcSize_wrong,}
                          What do you see instead?
                          Compression succeeds, causing assert.throws() to fail with
                          Additional information
                          The synchronous convenience API processes the input using the default final operation:
                           ZSTD_e_end
                          Therefore, its first compression call is effectively:
                           ZSTD_compressStream2(cctx, output, input, ZSTD_e_end);
                          Zstd has special behavior for this case. When the first call for a frame uses ZSTD_e_end, it replaces a previously configured pledged source size with the current input size.
                          Activity
                          Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment
                          Metadata
                          Metadata
                          Assignees
                          No one assigned
                            Labels
                            No labels
                            No labels
                            Type
                            No type
                            Projects
                            No projects
                              Milestone
                              No milestone
                              Relationships
                              None yet
                              Development
                              No branches or pull requests
                              Issue actions
                              
, '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");
}
} catch(__e) { console.warn('[Userscript:Universal Dark Mode]', __e); }
})();
})();

                              Skip to content
                              zlib: zstdCompressSync() does not validate pledgedSrcSize #64600
                              Closed
                              Closed
                              zlib: zstdCompressSync() does not validate pledgedSrcSize#64600
                              Description
                              @Archkon
                              Archkon
                              opened on Jul 19, 2026
                              Version
                              latest main branch
                              Platform
                              7.1.3-arch1-3

                              Subsystem
                              zlib
                              What steps will reproduce the bug?
                              constassert=require('node:assert/strict');constzlib=require('node:zlib');constinput=Buffer.alloc(42);assert.throws(()=>zlib.zstdCompressSync(input,{pledgedSrcSize: 1,}),{code: 'ZSTD_error_srcSize_wrong',},);
                              How often does it reproduce? Is there a required condition?
                              Every Time
                              What is the expected behavior? Why is that the expected behavior?
                              zstdCompressSync() should throw an error with:
                              {code: 'ZSTD_error_srcSize_wrong',errno: zlib.constants.ZSTD_error_srcSize_wrong,}
                              What do you see instead?
                              Compression succeeds, causing assert.throws() to fail with
                              Additional information
                              The synchronous convenience API processes the input using the default final operation:
                               ZSTD_e_end
                              Therefore, its first compression call is effectively:
                               ZSTD_compressStream2(cctx, output, input, ZSTD_e_end);
                              Zstd has special behavior for this case. When the first call for a frame uses ZSTD_e_end, it replaces a previously configured pledged source size with the current input size.
                              Activity
                              Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment
                              Metadata
                              Metadata
                              Assignees
                              No one assigned
                                Labels
                                No labels
                                No labels
                                Type
                                No type
                                Projects
                                No projects
                                  Milestone
                                  No milestone
                                  Relationships
                                  None yet
                                  Development
                                  No branches or pull requests
                                  Issue actions