mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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Eva Kurchatova
12aa64bbce
Commit 835a507535 ("selftests/bpf: Add -fms-extensions to bpf build
flags") gave the selftests the flag because the kernel is built with
it, and the generated vmlinux.h carries anonymous members declared by
tag:
struct slab {
...
struct freelist_counters;
};
samples/bpf did not get it. clang without the flag reads such a line as
a declaration that declares nothing, one warning per line for every
sample that includes vmlinux.h:
./vmlinux.h:34528:3: warning: declaration does not declare anything
[-Wmissing-declarations]
and lays the struct out without the member, so the BTF of the object
describes a struct the kernel does not have, and a program that touches
the member does not build at all.
Add the flag, and -Wno-microsoft-anon-tag with it, the way the
selftests do.
Signed-off-by: Eva Kurchatova <eva.kurchatova@virtuozzo.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Link: https://patch.msgid.link/20260925154937.3677406-1-eva.kurchatova@virtuozzo.com
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