[PATCH 4.4 074/143] test_hexdump: use memcpy instead of strncpy

From: Greg Kroah-Hartman
Date: Mon Feb 18 2019 - 09:05:27 EST


4.4-stable review patch. If anyone has any objections, please let me know.

------------------

From: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx>

commit b1286ed7158e9b62787508066283ab0b8850b518 upstream.

New versions of gcc reasonably warn about the odd pattern of

strncpy(p, q, strlen(q));

which really doesn't make sense: the strncpy() ends up being just a slow
and odd way to write memcpy() in this case.

Apparently there was a patch for this floating around earlier, but it
got lost.

Acked-again-by: Andy Shevchenko <andriy.shevchenko@xxxxxxxxxxxxxxx>
Signed-off-by: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>

---
lib/test-hexdump.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

--- a/lib/test-hexdump.c
+++ b/lib/test-hexdump.c
@@ -81,7 +81,7 @@ static void __init test_hexdump(size_t l
const char *q = *result++;
size_t amount = strlen(q);

- strncpy(p, q, amount);
+ memcpy(p, q, amount);
p += amount + 1;
}
if (i)