linux-kernel - [PATCH] gcc-plugins: Remove TODO_verify

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Message-Id: <20250920234519.work.915-kees@kernel.org>
Date: Sat, 20 Sep 2025 16:45:23 -0700
From: Kees Cook <kees@...nel.org>
To: linux-hardening@...r.kernel.org,
	Christopher Fore <csfore@...teo.net>
Cc: Kees Cook <kees@...nel.org>,
	linux-kernel@...r.kernel.org
Subject: [PATCH] gcc-plugins: Remove TODO_verify_il for GCC >= 16

GCC now runs TODO_verify_il automatically[1], so it is no longer exposed to
plugins. Only use the flag on GCC < 16.

Suggested-by: Christopher Fore <csfore@...teo.net>
Link: https://gcc.gnu.org/git/?p=gcc.git;a=commit;h=9739ae9384dd7cd3bb1c7683d6b80b7a9116eaf8
Signed-off-by: Kees Cook <kees@...nel.org>
---
How about like this, so it'll still work on GCC <16?
Cc: <linux-hardening@...r.kernel.org>
---
 scripts/gcc-plugins/gcc-common.h | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/scripts/gcc-plugins/gcc-common.h b/scripts/gcc-plugins/gcc-common.h
index 6cb6d1051815..8f1b3500f8e2 100644
--- a/scripts/gcc-plugins/gcc-common.h
+++ b/scripts/gcc-plugins/gcc-common.h
@@ -173,10 +173,17 @@ static inline opt_pass *get_pass_for_id(int id)
 	return g->get_passes()->get_pass_for_id(id);
 }
 
+#if BUILDING_GCC_VERSION < 16000
 #define TODO_verify_ssa TODO_verify_il
 #define TODO_verify_flow TODO_verify_il
 #define TODO_verify_stmts TODO_verify_il
 #define TODO_verify_rtl_sharing TODO_verify_il
+#else
+#define TODO_verify_ssa 0
+#define TODO_verify_flow 0
+#define TODO_verify_stmts 0
+#define TODO_verify_rtl_sharing 0
+#endif
 
 #define INSN_DELETED_P(insn) (insn)->deleted()
 
-- 
2.34.1