linux-kernel - [PATCH] selftests/bpf/progs: use __auto

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Message-ID: <20250806110230.23949-1-pranav.tyagi03@gmail.com>
Date: Wed,  6 Aug 2025 16:32:30 +0530
From: Pranav Tyagi <pranav.tyagi03@...il.com>
To: ast@...nel.org,
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	Pranav Tyagi <pranav.tyagi03@...il.com>
Subject: [PATCH] selftests/bpf/progs: use __auto_type in swap() macro

Replace typeof() with __auto_type in xdp_synproxy_kern.c.
__auto_type was introduced in GCC 4.9 and reduces the compile time for
all compilers. No functional changes intended.

Signed-off-by: Pranav Tyagi <pranav.tyagi03@...il.com>
---
 tools/testing/selftests/bpf/progs/xdp_synproxy_kern.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tools/testing/selftests/bpf/progs/xdp_synproxy_kern.c b/tools/testing/selftests/bpf/progs/xdp_synproxy_kern.c
index 62b8e29ced9f..b08738f9a0e6 100644
--- a/tools/testing/selftests/bpf/progs/xdp_synproxy_kern.c
+++ b/tools/testing/selftests/bpf/progs/xdp_synproxy_kern.c
@@ -58,7 +58,7 @@
 #define MAX_PACKET_OFF 0xffff
 
 #define swap(a, b) \
-	do { typeof(a) __tmp = (a); (a) = (b); (b) = __tmp; } while (0)
+	do { __auto_type __tmp = (a); (a) = (b); (b) = __tmp; } while (0)
 
 #define __get_unaligned_t(type, ptr) ({						\
 	const struct { type x; } __attribute__((__packed__)) *__pptr = (typeof(__pptr))(ptr); \
-- 
2.49.0