[PATCH] selftests/net: Replace non-standard __WORDSIZE with sizeof(long) * 8

[PATCH] selftests/net: Replace non-standard __WORDSIZE with sizeof(long) * 8

[Wake Liu]

The `__WORDSIZE` macro, defined in the non-standard `<bits/wordsize.h>`
header, is a GNU extension and not universally available with all
toolchains, such as Clang when used with musl libc.

This can lead to build failures in environments where this header is
missing.

The intention of the code is to determine the bit width of a C `long`.
Replace the non-portable `__WORDSIZE` with the standard and portable
`sizeof(long) * 8` expression to achieve the same result.

This change also removes the inclusion of the now-unused
`<bits/wordsize.h>` header.

Signed-off-by: Wake Liu <wakel@google.com>
---
 tools/testing/selftests/net/psock_tpacket.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/tools/testing/selftests/net/psock_tpacket.c b/tools/testing/selftests/net/psock_tpacket.c
index 221270cee3ea..0dd909e325d9 100644
--- a/tools/testing/selftests/net/psock_tpacket.c
+++ b/tools/testing/selftests/net/psock_tpacket.c
@@ -33,7 +33,6 @@
 #include <ctype.h>
 #include <fcntl.h>
 #include <unistd.h>
-#include <bits/wordsize.h>
 #include <net/ethernet.h>
 #include <netinet/ip.h>
 #include <arpa/inet.h>
@@ -785,7 +784,7 @@ static int test_kernel_bit_width(void)
 
 static int test_user_bit_width(void)
 {
-	return __WORDSIZE;
+	return sizeof(long) * 8;
 }
 
 static const char *tpacket_str[] = {
-- 
2.50.1.703.g449372360f-goog

Re: [PATCH] selftests/net: Replace non-standard __WORDSIZE with sizeof(long) * 8

[patchwork-bot+netdevbpf]

Hello:

This patch was applied to netdev/net-next.git (main)
by Jakub Kicinski <kuba@kernel.org>:

On Thu,  7 Aug 2025 16:09:32 +0800 you wrote:
> The `__WORDSIZE` macro, defined in the non-standard `<bits/wordsize.h>`
> header, is a GNU extension and not universally available with all
> toolchains, such as Clang when used with musl libc.
> 
> This can lead to build failures in environments where this header is
> missing.
> 
> [...]

Here is the summary with links:
  - selftests/net: Replace non-standard __WORDSIZE with sizeof(long) * 8
    https://git.kernel.org/netdev/net-next/c/c36748e8733e

You are awesome, thank you!
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