[PATCH v2 bpf-next 2/3] libbpf: fix compilation errors on ppc64le for btf dump typed data

[Alan Maguire]

Andrii reports:

"ppc64le arch doesn't like the %lld:

 In file included from btf_dump.c:22:
btf_dump.c: In function 'btf_dump_type_data_check_overflow':
libbpf_internal.h:111:22: error: format '%lld' expects argument of
type 'long long int', but argument 3 has type '__s64' {aka 'long int'}
[-Werror=format=]
  111 |  libbpf_print(level, "libbpf: " fmt, ##__VA_ARGS__); \
      |                      ^~~~~~~~~~
libbpf_internal.h:114:27: note: in expansion of macro '__pr'
  114 | #define pr_warn(fmt, ...) __pr(LIBBPF_WARN, fmt, ##__VA_ARGS__)
      |                           ^~~~
btf_dump.c:1992:3: note: in expansion of macro 'pr_warn'
 1992 |   pr_warn("unexpected size [%lld] for id [%u]\n",
      |   ^~~~~~~
btf_dump.c:1992:32: note: format string is defined here
 1992 |   pr_warn("unexpected size [%lld] for id [%u]\n",
      |                             ~~~^
      |                                |
      |                                long long int
      |                             %ld

Cast to size_t and use %zu."

Reported-by: Andrii Nakryiko <andrii@xxxxxxxxxx>
Signed-off-by: Alan Maguire <alan.maguire@xxxxxxxxxx>
---
 tools/lib/bpf/btf_dump.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/tools/lib/bpf/btf_dump.c b/tools/lib/bpf/btf_dump.c
index 814a538..e5fbfb8 100644
--- a/tools/lib/bpf/btf_dump.c
+++ b/tools/lib/bpf/btf_dump.c
@@ -2011,8 +2011,8 @@ static int btf_dump_type_data_check_overflow(struct btf_dump *d,
 	__s64 size = btf__resolve_size(d->btf, id);
 
 	if (size < 0 || size >= INT_MAX) {
-		pr_warn("unexpected size [%lld] for id [%u]\n",
-			size, id);
+		pr_warn("unexpected size [%zu] for id [%u]\n",
+			(size_t)size, id);
 		return -EINVAL;
 	}
 
-- 
1.8.3.1