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acea994327
Compiling the kernel with gcc12.3 W=2 results in shadowing warnings:
warning: declaration of '__pptr' shadows a previous local [-Wshadow]
const struct { type x; } __packed *__pptr = (typeof(__pptr))(ptr);
note: in definition of macro '__put_unaligned_t'
__pptr->x = (val);
note: in expansion of macro '__get_unaligned_t'
__put_unaligned_t(type, __get_unaligned_t(type, src), dst);
__get_unaligned_t() and __put_unaligned_t() use a local variable named
'__pptr', which can lead to variable shadowing when these macros are used in
the same scope. This results in a -Wshadow warning during compilation.
To address this issue, rename the local variables within the macros to
ensure uniqueness.
Signed-off-by: Peng Jiang <jiang.peng9@zte.com.cn>
Signed-off-by: Shao Mingyin <shao.mingyin@zte.com.cn>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Link: https://lore.kernel.org/all/20250324191230477zpGtgIRSH4mEHdtxGtgx9@zte.com.cn
15 lines
457 B
C
15 lines
457 B
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef __VDSO_UNALIGNED_H
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#define __VDSO_UNALIGNED_H
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#define __get_unaligned_t(type, ptr) ({ \
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const struct { type x; } __packed * __get_pptr = (typeof(__get_pptr))(ptr); \
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__get_pptr->x; \
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})
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#define __put_unaligned_t(type, val, ptr) do { \
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struct { type x; } __packed * __put_pptr = (typeof(__put_pptr))(ptr); \
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__put_pptr->x = (val); \
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} while (0)
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#endif /* __VDSO_UNALIGNED_H */
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