linux-kernel - [PATCH] objtool: Fix clang enum conversion warning

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Date:   Tue, 26 Dec 2017 15:27:20 -0600
From:   Josh Poimboeuf <jpoimboe@...hat.com>
To:     Ingo Molnar <mingo@...nel.org>
Cc:     linux-kernel@...r.kernel.org,
        Lukas Bulwahn <lukas.bulwahn@...il.com>,
        Jiri Slaby <jslaby@...e.cz>,
        Nick Desaulniers <nick.desaulniers@...il.com>
Subject: [PATCH] objtool: Fix clang enum conversion warning

From: Lukas Bulwahn <lukas.bulwahn@...il.com>

Fix the following clang enum conversion warning:

  arch/x86/decode.c:141:20: error: implicit conversion from enumeration
  type 'enum op_src_type' to different enumeration
  type 'enum op_dest_type' [-Werror,-Wenum-conversion]

    op->dest.type = OP_SRC_REG;
		  ~ ^~~~~~~~~~

It just happened to work before because OP_SRC_REG and OP_DEST_REG have
the same value.

Fixes: baa41469a7b9 ("objtool: Implement stack validation 2.0")
Signed-off-by: Lukas Bulwahn <lukas.bulwahn@...il.com>
Signed-off-by: Josh Poimboeuf <jpoimboe@...hat.com>
---
 tools/objtool/arch/x86/decode.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tools/objtool/arch/x86/decode.c b/tools/objtool/arch/x86/decode.c
index 8acfc47af70e..540a209b78ab 100644
--- a/tools/objtool/arch/x86/decode.c
+++ b/tools/objtool/arch/x86/decode.c
@@ -138,7 +138,7 @@ int arch_decode_instruction(struct elf *elf, struct section *sec,
 			*type = INSN_STACK;
 			op->src.type = OP_SRC_ADD;
 			op->src.reg = op_to_cfi_reg[modrm_reg][rex_r];
-			op->dest.type = OP_SRC_REG;
+			op->dest.type = OP_DEST_REG;
 			op->dest.reg = CFI_SP;
 		}
 		break;
-- 
2.13.6