From eca524d5a67516c1a08ac0523de9b961f65ecc66 Mon Sep 17 00:00:00 2001 From: Tony Ambardar Date: Thu, 2 Oct 2025 13:31:50 -0700 Subject: [PATCH] libbpf: Fix missing #pragma in libbpf_utils.c MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit The recent sha256 patch uses a GCC pragma to suppress compile errors for a packed struct, but omits a needed pragma (see related link) and thus still raises errors: (e.g. on GCC 12.3 armhf) libbpf_utils.c:153:29: error: packed attribute causes inefficient alignment for ‘__val’ [-Werror=attributes] 153 | struct __packed_u32 { __u32 __val; } __attribute__((packed)); | ^~~~~ Resolve by adding the GCC diagnostic pragma to ignore "-Wattributes". Link: https://lore.kernel.org/bpf/CAP-5=fXURWoZu2j6Y8xQy23i7=DfgThq3WC1RkGFBx-4moQKYQ@mail.gmail.com/ Fixes: 4a1c9e544b8d ("libbpf: remove linux/unaligned.h dependency for libbpf_sha256()") Signed-off-by: Tony Ambardar Acked-by: Andrii Nakryiko Signed-off-by: Alexei Starovoitov --- src/libbpf_utils.c | 1 + 1 file changed, 1 insertion(+) diff --git a/src/libbpf_utils.c b/src/libbpf_utils.c index 2bae8ca..5d66bc6 100644 --- a/src/libbpf_utils.c +++ b/src/libbpf_utils.c @@ -150,6 +150,7 @@ const char *libbpf_errstr(int err) #pragma GCC diagnostic push #pragma GCC diagnostic ignored "-Wpacked" +#pragma GCC diagnostic ignored "-Wattributes" struct __packed_u32 { __u32 __val; } __attribute__((packed)); #pragma GCC diagnostic pop