Seems like C++17 standard mode doesn't recognize typeof() anymore. This can
be tested by compiling test_cpp test with -std=c++17 or -std=c++1z options.
The use of typeof in skeleton generated code is unnecessary, all types are
well-known at the time of code generation, so remove all typeof()'s to make
skeleton code more future-proof when interacting with C++ compilers.
Fixes: 985ead416df3 ("bpftool: Add skeleton codegen command")
Signed-off-by: Andrii Nakryiko <andr...@fb.com>
---
tools/bpf/bpftool/gen.c | 8 ++++----
1 file changed, 4 insertions(+), 4 deletions(-)
diff --git a/tools/bpf/bpftool/gen.c b/tools/bpf/bpftool/gen.c
index 8a4c2b3b0cd6..db80e836816e 100644
--- a/tools/bpf/bpftool/gen.c
+++ b/tools/bpf/bpftool/gen.c
@@ -397,7 +397,7 @@ static int do_skeleton(int argc, char **argv)
{ \n\
struct %1$s *obj; \n\
\n\
- obj = (typeof(obj))calloc(1, sizeof(*obj)); \n\
+ obj = (struct %1$s *)calloc(1, sizeof(*obj)); \n\
if (!obj) \n\
return NULL; \n\
if (%1$s__create_skeleton(obj)) \n\
@@ -461,7 +461,7 @@ static int do_skeleton(int argc, char **argv)
{ \n\
struct bpf_object_skeleton *s; \n\
\n\
- s = (typeof(s))calloc(1, sizeof(*s)); \n\
+ s = (struct bpf_object_skeleton *)calloc(1,
sizeof(*s));\n\
if (!s) \n\
return -1; \n\
obj->skeleton = s; \n\
@@ -479,7 +479,7 @@ static int do_skeleton(int argc, char **argv)
/* maps */ \n\
s->map_cnt = %zu; \n\
s->map_skel_sz = sizeof(*s->maps); \n\
- s->maps = (typeof(s->maps))calloc(s->map_cnt,
s->map_skel_sz);\n\
+ s->maps = (struct bpf_map_skeleton
*)calloc(s->map_cnt, s->map_skel_sz);\n\
if (!s->maps) \n\
goto err; \n\
",
@@ -515,7 +515,7 @@ static int do_skeleton(int argc, char **argv)
/* programs */ \n\
s->prog_cnt = %zu; \n\
s->prog_skel_sz = sizeof(*s->progs); \n\
- s->progs =
(typeof(s->progs))calloc(s->prog_cnt, s->prog_skel_sz);\n\
+ s->progs = (struct bpf_prog_skeleton
*)calloc(s->prog_cnt, s->prog_skel_sz);\n\
if (!s->progs) \n\
goto err; \n\
",
--
2.24.1
