[clang] [clang][Sema] Stop format size estimator upon %p to adapt to linux kernel's extension (PR #65969)

[Richard Smith via cfe-commits]

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@@ -961,10 +961,16 @@ def FormatNonStandard : DiagGroup<"format-non-iso">;
 def FormatY2K : DiagGroup<"format-y2k">;
 def FormatPedantic : DiagGroup<"format-pedantic">;
 def FormatTypeConfusion : DiagGroup<"format-type-confusion">;
+
+def FormatOverflowNonKprintf: DiagGroup<"format-overflow-non-kprintf">;
+def FormatOverflow: DiagGroup<"format-overflow", [FormatOverflowNonKprintf]>;
+def FormatTruncationNonKprintf: DiagGroup<"format-truncation-non-kprintf">;
+def FormatTruncation: DiagGroup<"format-truncation", [FormatTruncationNonKprintf]>;
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zygoloid wrote:

Should these be added to the `FortifySource` group in addition to adding them to `Format`?

https://github.com/llvm/llvm-project/pull/65969