2024-01-16 06:19 UTC+0000 ~ Tiezhu Yang <yangtiezhu@xxxxxxxxxxx>
> There exists the following warning when building bpftool:
>
> CC prog.o
> prog.c: In function ‘profile_open_perf_events’:
> prog.c:2301:24: warning: ‘calloc’ sizes specified with ‘sizeof’ in the earlier argument and not in the later argument [-Wcalloc-transposed-args]
> 2301 | sizeof(int), obj->rodata->num_cpu * obj->rodata->num_metric);
> | ^~~
> prog.c:2301:24: note: earlier argument should specify number of elements, later size of each element
>
> Tested with the latest upstream GCC which contains a new warning option
> -Wcalloc-transposed-args. The first argument to calloc is documented to
> be number of elements in array, while the second argument is size of each
> element, just switch the first and second arguments of calloc() to silence
> the build warning, compile tested only.
>
> Fixes: 47c09d6a9f67 ("bpftool: Introduce "prog profile" command")
> Signed-off-by: Tiezhu Yang <yangtiezhu@xxxxxxxxxxx>
Reviewed-by: Quentin Monnet <quentin@xxxxxxxxxxxxx>
Thank you!
