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Merge branch 'bpf-selftests-fixes-for-gcc-bpf-16'
Jose E. Marchesi says:
====================
bpf: selftests fixes for GCC-BPF 16
Hello.
Just a couple of small fixes to get the BPF selftests build with what
will become GCC 16 this spring. One of the regressions is due to a
change in the behavior of a warning in GCC 16. The other is due to
the fact that GCC 16 actually implements btf_decl_tag and
btf_type_tag.
Salud!
====================
Link: https://patch.msgid.link/20260106173650.18191-1-jose.marchesi@oracle.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
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-1
+10
tools/testing/selftests/bpf/progs/free_timer.c
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tools/testing/selftests/bpf/progs/free_timer.c
···
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#define MAX_ENTRIES 8
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+
/* clang considers 'sum += 1' as usage but 'sum++' as non-usage. GCC
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* is more consistent and considers both 'sum += 1' and 'sum++' as
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* non-usage. This triggers warnings in the functions below.
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*
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* Starting with GCC 16 -Wunused-but-set-variable=2 can be used to
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* mimic clang's behavior. */
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#if !defined(__clang__) && __GNUC__ > 15
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#pragma GCC diagnostic ignored "-Wunused-but-set-variable"
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#endif
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struct map_value {
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struct bpf_timer timer;
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};
+10
tools/testing/selftests/bpf/progs/rcu_read_lock.c
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tools/testing/selftests/bpf/progs/rcu_read_lock.c
···
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#include "bpf_tracing_net.h"
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#include "bpf_misc.h"
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/* clang considers 'sum += 1' as usage but 'sum++' as non-usage. GCC
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+
* is more consistent and considers both 'sum += 1' and 'sum++' as
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+
* non-usage. This triggers warnings in the functions below.
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+
*
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+
* Starting with GCC 16 -Wunused-but-set-variable=2 can be used to
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* mimic clang's behavior. */
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#if !defined(__clang__) && __GNUC__ > 15
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#pragma GCC diagnostic ignored "-Wunused-but-set-variable"
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#endif
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+
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char _license[] SEC("license") = "GPL";
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struct {