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bpftool: Fix maybe-uninitialized warnings

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Somehow when bpftool is compiled in -Og mode, compiler produces new warnings
about possibly uninitialized variables. Fix all the reported problems.

Fixes: 2119f2189d ("bpftool: add C output format option to btf dump subcommand")
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Link: https://lore.kernel.org/bpf/20210313210920.1959628-3-andrii@kernel.org
This commit is contained in:
Andrii Nakryiko 2021-03-13 13:09:18 -08:00 committed by Alexei Starovoitov
parent dde7b3f5f2
commit 4bbb358368
3 changed files with 5 additions and 3 deletions
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3
tools/bpf/bpftool/btf.c
View File

@ -546,6 +546,7 @@ static int do_dump(int argc, char **argv)
NEXT_ARG();
if (argc < 1) {
p_err("expecting value for 'format' option\n");
err = -EINVAL;
goto done;
}
if (strcmp(*argv, "c") == 0) {
@ -555,11 +556,13 @@ static int do_dump(int argc, char **argv)
} else {
p_err("unrecognized format specifier: '%s', possible values: raw, c",
*argv);
err = -EINVAL;
goto done;
}
NEXT_ARG();
} else {
p_err("unrecognized option: '%s'", *argv);
err = -EINVAL;
goto done;
}
}

3
tools/bpf/bpftool/main.c
View File

@ -276,7 +276,7 @@ static int do_batch(int argc, char **argv)
int n_argc;
FILE *fp;
char *cp;
int err;
int err = 0;
int i;
if (argc < 2) {
@ -370,7 +370,6 @@ static int do_batch(int argc, char **argv)
} else {
if (!json_output)
printf("processed %d commands\n", lines);
err = 0;
}
err_close:
if (fp != stdin)

2
tools/bpf/bpftool/map.c
View File

@ -100,7 +100,7 @@ static int do_dump_btf(const struct btf_dumper *d,
void *value)
{
__u32 value_id;
int ret;
int ret = 0;
/* start of key-value pair */
jsonw_start_object(d->jw);