• YiFei Zhu's avatar
    selftests/seccomp: Fix compile warning when CC=clang · 3ce4b78f
    YiFei Zhu authored
    clang has -Wconstant-conversion by default, and the constant 0xAAAAAAAAA
    (9 As) being converted to an int, which is generally 32 bits, results
    in the compile warning:
    
      clang -Wl,-no-as-needed -Wall -isystem ../../../../usr/include/  -lpthread  seccomp_bpf.c -lcap -o seccomp_bpf
      seccomp_bpf.c:812:67: warning: implicit conversion from 'long' to 'int' changes value from 45812984490 to -1431655766 [-Wconstant-conversion]
              int kill = kill_how == KILL_PROCESS ? SECCOMP_RET_KILL_PROCESS : 0xAAAAAAAAA;
                  ~~~~                                                         ^~~~~~~~~~~
      1 warning generated.
    
    -1431655766 is the expected truncation, 0xAAAAAAAA (8 As), so use
    this directly in the code to avoid the warning.
    
    Fixes: 3932fcec ("selftests/seccomp: Add test for unknown SECCOMP_RET kill behavior")
    Signed-off-by: default avatarYiFei Zhu <zhuyifei@google.com>
    Signed-off-by: default avatarKees Cook <keescook@chromium.org>
    Link: https://lore.kernel.org/r/20220526223407.1686936-1-zhuyifei@google.com
    3ce4b78f
seccomp_bpf.c 119 KB