GCC 10+ defaults to -fno-common, which enforces proper declaration of external references using "extern". without this change a link would fail with: lib/raid6/test/algos.c:28: multiple definition of `raid6_call'; lib/raid6/test/test.c:22: first defined here Signed-off-by: Dirk Müller <dmueller@xxxxxxx> --- lib/raid6/test/test.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/lib/raid6/test/test.c b/lib/raid6/test/test.c index a3cf071941ab..ab0459150a61 100644 --- a/lib/raid6/test/test.c +++ b/lib/raid6/test/test.c @@ -19,7 +19,7 @@ #define NDISKS 16 /* Including P and Q */ const char raid6_empty_zero_page[PAGE_SIZE] __attribute__((aligned(PAGE_SIZE))); -struct raid6_calls raid6_call; +extern struct raid6_calls raid6_call; char *dataptrs[NDISKS]; char data[NDISKS][PAGE_SIZE] __attribute__((aligned(PAGE_SIZE))); -- 2.35.1
