[Webkit-unassigned] [Bug 252353] New: [Win] ASSERT() on Windows fires silently if caller has set up a SEH frame
bugzilla-daemon at webkit.org
bugzilla-daemon at webkit.org
Wed Feb 15 15:00:13 PST 2023
https://bugs.webkit.org/show_bug.cgi?id=252353
Bug ID: 252353
Summary: [Win] ASSERT() on Windows fires silently if caller has
set up a SEH frame
Product: WebKit
Version: WebKit Local Build
Hardware: Unspecified
OS: Unspecified
Status: NEW
Keywords: InRadar
Severity: Normal
Priority: P2
Component: Web Template Framework
Assignee: webkit-unassigned at lists.webkit.org
Reporter: bfulgham at webkit.org
CC: don.olmstead at sony.com, Hironori.Fujii at sony.com
If code in the callchain has set up a structured exception handling frame with __try/__except, exceptions will fire silently, causing code to get killed and execution to mysteriously continue.
This can happen if we are called back from another DLL, called from a Windows WM_TIMER callback, or called on a secondary thread.
We should consider implementing ASSERT() on Windows with a mechanism as described in:
http://www.codeproject.com/KB/debug/DebugBreakAnyway.aspx
<rdar://8033688>
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