On 4/26/23 8:53 AM, Stanislav Fomichev wrote:
From: Peng Wei <pengweiprc@xxxxxxxxxx>
Compiling C++ BPF programs with existing bpf_helper_defs.h is not
possible due to stricter C++ type conversions. C++ complains
about (void *) type conversions:
$ clang++ --include linux/types.h ./tools/lib/bpf/bpf_helper_defs.h
bpf_helper_defs.h:57:67: error: invalid conversion from ‘void*’ to ‘void* (*)(void*, const void*)’ [-fpermissive]
57 | static void *(*bpf_map_lookup_elem)(void *map, const void *key) = (void *) 1;
| ^~~~~~~~~~
| |
| void*
Extend bpf_doc.py to use proper function type instead of void.
Before:
static void *(*bpf_map_lookup_elem)(void *map, const void *key) = (void *) 1;
After:
static void *(*bpf_map_lookup_elem)(void *map, const void *key) = (void *(*)(void *map, const void *key)) 1;
v2:
- add clang++ invocation example (Yonghong)
Cc: Yonghong Song <yhs@xxxxxxxx>
Signed-off-by: Peng Wei <pengweiprc@xxxxxxxxxx>
Signed-off-by: Stanislav Fomichev <sdf@xxxxxxxxxx>
Acked-by: Yonghong Song <yhs@xxxxxx>
