Branch: refs/heads/main
Home: https://github.com/WebKit/WebKit
Commit: 4bfd6c750726a25617c844de7be79c4400f3c088
https://github.com/WebKit/WebKit/commit/4bfd6c750726a25617c844de7be79c4400f3c088
Author: Sergey Rubanov <[email protected]>
Date: 2026-07-23 (Thu, 23 Jul 2026)
Changed paths:
A JSTests/wasm/stress/nested-inline-stacktrace-omg.js
M Source/JavaScriptCore/wasm/WasmCallee.cpp
Log Message:
-----------
[JSC][Wasm] Fix OMG inlined stack origin lookup skipping deeper frames
https://bugs.webkit.org/show_bug.cgi?id=270832
Reviewed by Yusuke Suzuki.
getCodeOrigin used a broken lower_bound comparator on lastInlineCSI
(integer subtraction coerced to bool), so it could start mid-list and
skip deeper postorder origins that still contain the call site.
Error.stack then dropped nested inlined frames (seen as a flaky wasm
stress failure on x86/EWS). Use a proper lower_bound for the first
origin with lastInlineCSI >= csi, then walk only that suffix matching
firstInlineCSI and depth.
Add a focused OMG-inlining stress test for nested catch/throw stacks.
* Source/JavaScriptCore/wasm/WasmCallee.cpp:
(JSC::Wasm::OptimizingJITCallee::getCodeOrigin):
* JSTests/wasm/stress/nested-inline-stacktrace-omg.js: Added.
Canonical link: https://commits.webkit.org/317800@main
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