[Webkit-unassigned] [Bug 282193] New: error: the two-parameter std::span construction is unsafe as it can introduce mismatch between buffer size and the bound information [-Werror, -Wunsafe-buffer-

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=282193

            Bug ID: 282193
           Summary: error: the two-parameter std::span construction is
                    unsafe as it can introduce mismatch between buffer
                    size and the bound information
                    [-Werror,-Wunsafe-buffer-
           Product: WebKit
           Version: Other
          Hardware: PC
                OS: Linux
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: WebKitGTK
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: mcatanzaro at redhat.com
                CC: bugs-noreply at webkitgtk.org

With Clang 19.1.0, we have a large number of errors of this form:

In file included from /home/mcatanzaro/Projects/WebKit/WebKitBuild/gtk4/DerivedSources/WebKit/unified-sources/UnifiedSource-50d0d8dd-21.cpp:1:
/home/mcatanzaro/Projects/WebKit/Source/WebKit/Shared/glib/ArgumentCodersGLib.cpp:46:16: error: the two-parameter std::span construction is unsafe as it can introduce mismatch between buffer size and the bound information [-Werror,-Wunsafe-buffer-usage-in-container]
   46 |     encoder << std::span(array->data, array->len);
      |                ^

I will add WTF_ALLOW_UNSAFE_BUFFER_USAGE_BEGIN and WTF_ALLOW_UNSAFE_BUFFER_USAGE_END usage to avoid this.

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