https://gcc.gnu.org/bugzilla/show_bug.cgi?id=107843
Bug ID: 107843
Summary: error: incompatible type for argument in
___bpf_ctx_cast2
Product: gcc
Version: 13.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: target
Assignee: unassigned at gcc dot gnu.org
Reporter: james.hilliard1 at gmail dot com
Target Milestone: ---
I'm seeing this error which does not occur in llvm for a bpf test(bpf_cubic.c)
in bpf-next:
In file included from
/home/buildroot/bpf-next/tools/testing/selftests/bpf/bpf_tcp_helpers.h:9,
from progs/bpf_cubic.c:20:
progs/bpf_cubic.c: In function 'bpf_cubic_cwnd_event':
/home/buildroot/bpf-next/tools/bpf/resolve_btfids/libbpf/include/bpf/bpf_tracing.h:399:63:
error: incompatible type for argument 3 of '____bpf_cubic_cwnd_event'
399 | #define ___bpf_ctx_cast2(x, args...) ___bpf_ctx_cast1(args), (void
*)ctx[1]
|
^~~~~~~~~~~~~~
| |
| void *
/home/buildroot/bpf-next/tools/bpf/resolve_btfids/libbpf/include/bpf/bpf_helpers.h:187:29:
note: in expansion of macro '___bpf_ctx_cast2'
187 | #define ___bpf_concat(a, b) a ## b
| ^
/home/buildroot/bpf-next/tools/bpf/resolve_btfids/libbpf/include/bpf/bpf_helpers.h:190:29:
note: in expansion of macro '___bpf_concat'
190 | #define ___bpf_apply(fn, n) ___bpf_concat(fn, n)
| ^~~~~~~~~~~~~
/home/buildroot/bpf-next/tools/bpf/resolve_btfids/libbpf/include/bpf/bpf_tracing.h:410:39:
note: in expansion of macro '___bpf_apply'
410 | #define ___bpf_ctx_cast(args...) ___bpf_apply(___bpf_ctx_cast,
___bpf_narg(args))(args)
| ^~~~~~~~~~~~
/home/buildroot/bpf-next/tools/bpf/resolve_btfids/libbpf/include/bpf/bpf_tracing.h:435:27:
note: in expansion of macro '___bpf_ctx_cast'
435 | return ____##name(___bpf_ctx_cast(args));
\
| ^~~~~~~~~~~~~~~
progs/bpf_cubic.c:189:6: note: in expansion of macro 'BPF_PROG'
189 | void BPF_PROG(bpf_cubic_cwnd_event, struct sock *sk, enum tcp_ca_event
event)
| ^~~~~~~~
progs/bpf_cubic.c:189:72: note: expected 'enum tcp_ca_event' but argument is of
type 'void *'
189 | void BPF_PROG(bpf_cubic_cwnd_event, struct sock *sk, enum tcp_ca_event
event)
|
~~~~~~~~~~~~~~~~~~^~~~~
/home/buildroot/bpf-next/tools/bpf/resolve_btfids/libbpf/include/bpf/bpf_tracing.h:430:39:
note: in definition of macro 'BPF_PROG'
430 | ____##name(unsigned long long *ctx, ##args);
\
| ^~~~
/home/buildroot/bpf-next/tools/bpf/resolve_btfids/libbpf/include/bpf/bpf_tracing.h:435:16:
error: 'return' with a value, in function returning void [-Werror]
435 | return ____##name(___bpf_ctx_cast(args));
\
| ^~~~
progs/bpf_cubic.c:189:6: note: in expansion of macro 'BPF_PROG'
189 | void BPF_PROG(bpf_cubic_cwnd_event, struct sock *sk, enum tcp_ca_event
event)
| ^~~~~~~~
progs/bpf_cubic.c:189:15: note: declared here
189 | void BPF_PROG(bpf_cubic_cwnd_event, struct sock *sk, enum tcp_ca_event
event)
| ^~~~~~~~~~~~~~~~~~~~
/home/buildroot/bpf-next/tools/bpf/resolve_btfids/libbpf/include/bpf/bpf_tracing.h:431:17:
note: in definition of macro 'BPF_PROG'
431 | typeof(name(0)) name(unsigned long long *ctx)
\
|
