mirror of https://github.com/torvalds/linux.git
639f58a0f4
The kernel is now built with -fms-extensions. Anonymous structs or
unions permitted by these extensions have been used in several places,
and can end up in the generated vmlinux.h file, for example:
struct ns_tree {
[...]
};
[...]
struct ns_common {
[...]
union {
struct ns_tree;
struct callback_head ns_rcu;
};
};
Trying to include this header for compiling a tool may result in build
warnings, if the compiler does not expect these extensions. This is the
case, for example, with bpftool:
In file included from skeleton/pid_iter.bpf.c:3:
.../tools/testing/selftests/bpf/tools/build/bpftool/vmlinux.h:64057:3:
warning: declaration does not declare anything
[-Wmissing-declarations]
64057 | struct ns_tree;
| ^~~~~~~~~~~~~~
Fix these build warnings in bpftool by turning on Microsoft extensions
when compiling the two BPF programs that rely on vmlinux.h.
Reported-by: Alexei Starovoitov <ast@kernel.org>
Closes: https://lore.kernel.org/bpf/CAADnVQK9ZkPC7+R5VXKHVdtj8tumpMXm7BTp0u9CoiFLz_aPTg@mail.gmail.com/
Signed-off-by: Quentin Monnet <qmo@kernel.org>
Link: https://lore.kernel.org/r/20251208130748.68371-1-qmo@kernel.org
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
|
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|---|---|---|
| .. | ||
| Documentation | ||
| bash-completion | ||
| skeleton | ||
| .gitignore | ||
| Makefile | ||
| btf.c | ||
| btf_dumper.c | ||
| cfg.c | ||
| cfg.h | ||
| cgroup.c | ||
| common.c | ||
| feature.c | ||
| gen.c | ||
| iter.c | ||
| jit_disasm.c | ||
| json_writer.c | ||
| json_writer.h | ||
| link.c | ||
| main.c | ||
| main.h | ||
| map.c | ||
| map_perf_ring.c | ||
| net.c | ||
| netlink_dumper.c | ||
| netlink_dumper.h | ||
| perf.c | ||
| pids.c | ||
| prog.c | ||
| sign.c | ||
| struct_ops.c | ||
| token.c | ||
| tracelog.c | ||
| xlated_dumper.c | ||
| xlated_dumper.h | ||