On Thu, Aug 07, 2025 at 09:19:47PM +0530, Bala-Vignesh-Reddy wrote: > Fix -Wunused-result warning generated when compiled with gcc 13.3.0, > by checking fread's return value and handling errors, preventing > potential failures when reading from stdin. > > Fixes compiler warning: > warning: ignoring return value of 'fread' declared with attribute > 'warn_unused_result' [-Wunused-result]
> --- a/tools/testing/selftests/arm64/pauth/exec_target.c
> +++ b/tools/testing/selftests/arm64/pauth/exec_target.c
> @@ -13,7 +13,12 @@ int main(void)
> - fread(&val, sizeof(size_t), 1, stdin);
> + size_t size = fread(&val, sizeof(size_t), 1, stdin);
> +
> + if (size != 1) {
> + fprintf(stderr, "Could not read input from stdin\n");
> + return -1;
> + }
It doesn't really matter but it'd be nicer to return a standard value
from main(), EXIT_FAILURE is probably a good choice. Exit values are in
the range 0..255.
signature.asc
Description: PGP signature
