linux-kernel - [PATCH v2 22/24] objtool: Include weak functions in 'global

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Message-Id: <85c4281eecd9388e7b3b21ef550119caa5305327.1676358308.git.jpoimboe@kernel.org>
Date:   Mon, 13 Feb 2023 23:05:56 -0800
From:   Josh Poimboeuf <jpoimboe@...nel.org>
To:     linux-kernel@...r.kernel.org
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Subject: [PATCH v2 22/24] objtool: Include weak functions in 'global_noreturns' check

If a global __noreturn function prototype has a corresponding weak
function, it should also be __noreturn.

Signed-off-by: Josh Poimboeuf <jpoimboe@...nel.org>
---
 tools/objtool/check.c | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/tools/objtool/check.c b/tools/objtool/check.c
index ba07a8ebaf73..0a1cf867d9b2 100644
--- a/tools/objtool/check.c
+++ b/tools/objtool/check.c
@@ -193,14 +193,14 @@ static bool __dead_end_function(struct objtool_file *file, struct symbol *func,
 	if (!func)
 		return false;
 
-	if (func->bind == STB_WEAK)
-		return false;
-
-	if (func->bind == STB_GLOBAL)
+	if (func->bind == STB_GLOBAL || func->bind == STB_WEAK)
 		for (i = 0; i < ARRAY_SIZE(global_noreturns); i++)
 			if (!strcmp(func->name, global_noreturns[i]))
 				return true;
 
+	if (func->bind == STB_WEAK)
+		return false;
+
 	if (!func->len)
 		return false;
 
-- 
2.39.1