From: Andrii Nakryiko andriin@fb.com
[ Upstream commit 8faf7fc597d59b142af41ddd4a2d59485f75f88a ]
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 andriin@fb.com Signed-off-by: Alexei Starovoitov ast@kernel.org Acked-by: Song Liu songliubraving@fb.com Link: https://lore.kernel.org/bpf/20200812025907.1371956-1-andriin@fb.com Signed-off-by: Sasha Levin sashal@kernel.org --- 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 5ff951e08c740..52ebe400e9ca4 100644 --- a/tools/bpf/bpftool/gen.c +++ b/tools/bpf/bpftool/gen.c @@ -402,7 +402,7 @@ 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\ @@ -466,7 +466,7 @@ 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\ @@ -484,7 +484,7 @@ 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\ ", @@ -520,7 +520,7 @@ 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\ ",