[Clang] GeneratedSerializers.cpp(3716,11): error: offset of on non-st…

…andard-layout type 'WebKit::AudioTrackPrivateRemoteConfiguration' [-Werror,-Winvalid-offsetof]

https://bugs.webkit.org/show_bug.cgi?id=270770

Reviewed by Alex Christensen.

Clang 18.1.1 reports a warning for GeneratedSerializers.cpp:

> DerivedSources\GeneratedSerializers.cpp(3716,11): error: offset of on non-standard-layout type 'WebKit::AudioTrackPrivateRemoteConfiguration' [-Werror,-Winvalid-offsetof]
>  3716 |         , offsetof(WebKit::AudioTrackPrivateRemoteConfiguration, enabled)
>       |           ^                                                      ~~~~~~~

generate-serializers.py already suppresses the warning for GCC.

* Source/WebKit/Scripts/generate-serializers.py:
Ignore `invalid-offsetof` warning both for GCC and Clang.

Canonical link: https://commits.webkit.org/275934@main

Source/WebKit/Scripts/generate-serializers.py

@@ -1128,11 +1128,9 @@ def generate_impl(serialized_types, serialized_enums, headers, generating_webkit
     result.append('};')
     result.append('template<> struct VirtualTableAndRefCountOverhead<false, false> { };')
     result.append('')
-    # GCC is less generous with its interpretation of "Use of the offsetof macro with a
-    # type other than a standard-layout class is conditionally-supported".
-    result.append('#if COMPILER(GCC)')
+    # GCC and Clang>=18 are less generous with their interpretation of "Use of the offsetof macro
+    # with a type other than a standard-layout class is conditionally-supported".
     result.append('IGNORE_WARNINGS_BEGIN("invalid-offsetof")')
-    result.append('#endif')
     result.append('')
     result.append('namespace IPC {')
     result.append('')
@@ -1215,9 +1213,7 @@ def generate_impl(serialized_types, serialized_enums, headers, generating_webkit
     result.append('')
     result.append('} // namespace WTF')
     result.append('')
-    result.append('#if COMPILER(GCC)')
     result.append('IGNORE_WARNINGS_END')
-    result.append('#endif')
     result.append('')
     return '\n'.join(result)