RESOLVED INVALID 285591
Missing Validation for Sub-Section Order in Custom Section 
https://bugs.webkit.org/show_bug.cgi?id=285591
Summary Missing Validation for Sub-Section Order in Custom Section
tombox1337
Reported 2025-01-08 03:42:42 PST
Created attachment 473835 [details] program.js ### Description WebKit does not enforce the requirement for sub-sections within a custom section to be in a specific order. This behavior violates the WebAssembly specification, which mandates that sub-sections should follow a particular order. ### Environment - OS: Ubuntu 20.04 - CPU: amd64 - WebKit Version: 146fa28a329d220785d2972c1d691555141e6406 ### Steps to Reproduce Run the following WebAssembly module: ``` ./JSCOnly/Debug/bin/jsc ./program.js ``` ### Current State ```plaintext No validation error is produced. ``` ### Expected Behavior The WebAssembly module should fail validation and report an error similar to: ``` out-of-order sub-section ```
Attachments
program.js (254 bytes, application/x-javascript)
2025-01-08 03:42 PST, tombox1337 		no flags
Details
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Radar WebKit Bug Importer
Comment 1 2025-01-15 03:43:35 PST
<rdar://problem/142957426>
Yusuke Suzuki
Comment 2 2025-01-30 22:22:25 PST
Can you point out the spec text describing this validation?
Yusuke Suzuki
Comment 3 2025-02-07 18:07:45 PST
This is not specified, and tolerant handling is better.
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