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Commit 32bb954d authored by Arnd Bergmann's avatar Arnd Bergmann Committed by Max Filippov
Browse files

xtensa: shut up gcc-8 warnings 



Many uses of strncpy() on xtensa causes  a warning like

arch/xtensa/include/asm/string.h:56:42: warning: array subscript is above array bounds [-Warray-bounds]
   : "0" (__dest), "1" (__src), "r" (__src+__n)

This avoids the warning by turning the pointer arithmetic into an
integer operation that does not get checked the same way.

Signed-off-by: default avatarArnd Bergmann <arnd@arndb.de>
Signed-off-by: default avatarMax Filippov <jcmvbkbc@gmail.com>
parent fed566ca

arch/xtensa/include/asm/string.h

+2 −2
Original line number Diff line number Diff line
@@ -53,7 +53,7 @@ static inline char *strncpy(char *__dest, const char *__src, size_t __n) 
		"bne	%1, %5, 1b\n"

		"2:"

		: "=r" (__dest), "=r" (__src), "=&r" (__dummy)

		: "0" (__dest), "1" (__src), "r" (__src+__n)

		: "0" (__dest), "1" (__src), "r" ((uintptr_t)__src+__n)

		: "memory");



	return __xdest;
@@ -101,7 +101,7 @@ static inline int strncmp(const char *__cs, const char *__ct, size_t __n) 
		"2:\n\t"

		"sub	%2, %2, %3"

		: "=r" (__cs), "=r" (__ct), "=&r" (__res), "=&r" (__dummy)

		: "0" (__cs), "1" (__ct), "r" (__cs+__n));

		: "0" (__cs), "1" (__ct), "r" ((uintptr_t)__cs+__n));



	return __res;

}