Commit 2aa93695 authored by Cupertino Miranda's avatar Cupertino Miranda Committed by Andrii Nakryiko
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selftests/bpf: Disable strict aliasing for verifier_nocsr.c 



verfifier_nocsr.c fails to compile in GCC. The reason behind it was
initially explained in commit 27a90b14.

"A few BPF selftests perform type punning and they may break strict
aliasing rules, which are exploited by both GCC and clang by default
while optimizing.  This can lead to broken compiled programs."

Signed-off-by: default avatarCupertino Miranda <cupertino.miranda@oracle.com>
Signed-off-by: default avatarAndrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/20240819151129.1366484-2-cupertino.miranda@oracle.com
parent 955bba7e

tools/testing/selftests/bpf/Makefile

+1 −0
Original line number Diff line number Diff line
@@ -58,6 +58,7 @@ progs/test_pkt_md_access.c-CFLAGS := -fno-strict-aliasing 
progs/test_sk_lookup.c-CFLAGS := -fno-strict-aliasing

progs/timer_crash.c-CFLAGS := -fno-strict-aliasing

progs/test_global_func9.c-CFLAGS := -fno-strict-aliasing

progs/verifier_nocsr.c-CFLAGS := -fno-strict-aliasing



ifneq ($(LLVM),)

# Silence some warnings when compiled with clang