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selftests/bpf: Disable strict aliasing for verifier_nocsr.c

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verfifier_nocsr.c fails to compile in GCC. The reason behind it was
initially explained in commit 27a90b14b9.

"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: Cupertino Miranda <cupertino.miranda@oracle.com>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/20240819151129.1366484-2-cupertino.miranda@oracle.com
This commit is contained in:
Cupertino Miranda
2024-08-19 16:11:27 +01:00
committed by Andrii Nakryiko
parent 955bba7e0a
commit 2aa9369508
1 changed files with 1 additions and 0 deletions
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tools/testing/selftests/bpf/Makefile
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@@ -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