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libbpf: Fix non-C89 loop variable declaration in gen_loader.c

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Fix the `int i` declaration inside the for statement. This is non-C89
compliant. See [0] for user report breaking BCC build.

  [0] https://github.com/libbpf/libbpf/issues/403

Fixes: 18f4fccbf3 ("libbpf: Update gen_loader to emit BTF_KIND_FUNC relocations")
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Kumar Kartikeya Dwivedi <memxor@gmail.com>
Link: https://lore.kernel.org/bpf/20211105191055.3324874-1-andrii@kernel.org
This commit is contained in:
Andrii Nakryiko 2021-11-05 12:10:55 -07:00 committed by Alexei Starovoitov
parent be2f2d1680
commit b8b5cb55f5
1 changed files with 2 additions and 1 deletions
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3
tools/lib/bpf/gen_loader.c
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@ -584,8 +584,9 @@ void bpf_gen__record_extern(struct bpf_gen *gen, const char *name, bool is_weak,
static struct ksym_desc *get_ksym_desc(struct bpf_gen *gen, struct ksym_relo_desc *relo)
{
struct ksym_desc *kdesc;
int i;
for (int i = 0; i < gen->nr_ksyms; i++) {
for (i = 0; i < gen->nr_ksyms; i++) {
if (!strcmp(gen->ksyms[i].name, relo->name)) {
gen->ksyms[i].ref++;
return &gen->ksyms[i];