On Wed, May 3, 2017 at 2:18 PM, Geert Uytterhoeven <[email protected]> wrote: > If gcc (e.g. 4.1.2) decides not to inline total_extension_size(), the > build will fail with: > > net/built-in.o: In function `nf_conntrack_init_start': > (.text+0x9baf6): undefined reference to `__compiletime_assert_1893' > > or > > ERROR: "__compiletime_assert_1893" [net/netfilter/nf_conntrack.ko] > undefined! > > Fix this by forcing inlining of total_extension_size(). > > Fixes: b3a5db109e0670d6 ("netfilter: conntrack: use u8 for extension sizes > again") > Signed-off-by: Geert Uytterhoeven <[email protected]>
I saw this as well when I tried building with "gcc-7 -Og", and came to the same conclusion. Acked-by: Arnd Bergmann <[email protected]> With -Og, there were a couple of other instances of BUILD_BUG_ON() failing to see a compile-time constant, presumably as it fails to inline any functions that are not explicitly marked inline. Arnd
