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Date: Sun, 1 Nov 2015 01:32:47 +0100
From: Frank Dittrich <frank.dittrich@...lbox.org>
To: john-dev@...ts.openwall.com
Subject: dereferencing type-punned pointer will break strict-aliasing rules in
 DES_bs_b.c (linux-arm32le-neon)

Solar,

After getting tons of warnings when building bleeding-jumbo on Raspberry
Pi 2, verified that the same warnings occur with master.


$ make -s linux-arm32le-neon
DES_std.c: In function ‘DES_std_set_key’:
DES_std.c:635:17: warning: array subscript is above array bounds
[-Warray-bounds]
   while (DES_key[i++]) k += 2;
                 ^
DES_bs_b.c: In function ‘DES_bs_finalize_keys’:
DES_bs_b.c:1241:4: warning: dereferencing type-punned pointer will break
strict-aliasing rules [-Wstrict-aliasing]
    FINALIZE_NEXT_KEY_BIT_0
    ^
DES_bs_b.c:1242:4: warning: dereferencing type-punned pointer will break
strict-aliasing rules [-Wstrict-aliasing]
    FINALIZE_NEXT_KEY_BIT_1
    ^
DES_bs_b.c:1243:4: warning: dereferencing type-punned pointer will break
strict-aliasing rules [-Wstrict-aliasing]
    FINALIZE_NEXT_KEY_BIT_2
    ^
DES_bs_b.c:1244:4: warning: dereferencing type-punned pointer will break
strict-aliasing rules [-Wstrict-aliasing]
    FINALIZE_NEXT_KEY_BIT_3
    ^
DES_bs_b.c:1245:4: warning: dereferencing type-punned pointer will break
strict-aliasing rules [-Wstrict-aliasing]
    FINALIZE_NEXT_KEY_BIT_4
    ^
DES_bs_b.c:1246:4: warning: dereferencing type-punned pointer will break
strict-aliasing rules [-Wstrict-aliasing]
    FINALIZE_NEXT_KEY_BIT_5
    ^
DES_bs_b.c:1247:4: warning: dereferencing type-punned pointer will break
strict-aliasing rules [-Wstrict-aliasing]
    FINALIZE_NEXT_KEY_BIT_6
    ^
DES_bs_b.c:1260:4: warning: dereferencing type-punned pointer will break
strict-aliasing rules [-Wstrict-aliasing]
    vst(*(kvtype *)&DES_bs_all.KS.v[index], 0,
    ^
DES_bs_b.c: In function ‘DES_bs_crypt_25’:
DES_bs_b.c:1406:4: warning: dereferencing type-punned pointer will break
strict-aliasing rules [-Wstrict-aliasing]
    vtype zero = vzero;
    ^
DES_bs_b.c:1426:3: warning: dereferencing type-punned pointer will break
strict-aliasing rules [-Wstrict-aliasing]
   s3(y(7, 12), y(8, 13), y(9, 14),
   ^
DES_bs_b.c:1426:3: warning: dereferencing type-punned pointer will break
strict-aliasing rules [-Wstrict-aliasing]
DES_bs_b.c:1426:3: warning: dereferencing type-punned pointer will break
strict-aliasing rules [-Wstrict-aliasing]
DES_bs_b.c:1427:4: warning: dereferencing type-punned pointer will break
strict-aliasing rules [-Wstrict-aliasing]
    y(10, 15), y(11, 16), y(12, 17),
    ^
DES_bs_b.c:1427:4: warning: dereferencing type-punned pointer will break
strict-aliasing rules [-Wstrict-aliasing]
DES_bs_b.c:1427:4: warning: dereferencing type-punned pointer will break
strict-aliasing rules [-Wstrict-aliasing]
DES_bs_b.c:1430:3: warning: dereferencing type-punned pointer will break
strict-aliasing rules [-Wstrict-aliasing]
   s4(y(11, 18), y(12, 19), y(13, 20),
   ^
DES_bs_b.c:1430:3: warning: dereferencing type-punned pointer will break
strict-aliasing rules [-Wstrict-aliasing]
DES_bs_b.c:1430:3: warning: dereferencing type-punned pointer will break
strict-aliasing rules [-Wstrict-aliasing]
DES_bs_b.c:1431:4: warning: dereferencing type-punned pointer will break
strict-aliasing rules [-Wstrict-aliasing]
    y(14, 21), y(15, 22), y(16, 23),
    ^
DES_bs_b.c:1431:4: warning: dereferencing type-punned pointer will break
strict-aliasing rules [-Wstrict-aliasing]
DES_bs_b.c:1431:4: warning: dereferencing type-punned pointer will break
strict-aliasing rules [-Wstrict-aliasing]
DES_bs_b.c:1440:3: warning: dereferencing type-punned pointer will break
strict-aliasing rules [-Wstrict-aliasing]
   s7(y(23, 36), y(24, 37), y(25, 38),
   ^
DES_bs_b.c:1440:3: warning: dereferencing type-punned pointer will break
strict-aliasing rules [-Wstrict-aliasing]
DES_bs_b.c:1440:3: warning: dereferencing type-punned pointer will break
strict-aliasing rules [-Wstrict-aliasing]
DES_bs_b.c:1441:4: warning: dereferencing type-punned pointer will break
strict-aliasing rules [-Wstrict-aliasing]
    y(26, 39), y(27, 40), y(28, 41),
    ^
DES_bs_b.c:1441:4: warning: dereferencing type-punned pointer will break
strict-aliasing rules [-Wstrict-aliasing]
DES_bs_b.c:1441:4: warning: dereferencing type-punned pointer will break
strict-aliasing rules [-Wstrict-aliasing]
DES_bs_b.c:1444:3: warning: dereferencing type-punned pointer will break
strict-aliasing rules [-Wstrict-aliasing]
   s8(y(27, 42), y(28, 43), y(29, 44),
   ^
DES_bs_b.c:1444:3: warning: dereferencing type-punned pointer will break
strict-aliasing rules [-Wstrict-aliasing]
DES_bs_b.c:1444:3: warning: dereferencing type-punned pointer will break
strict-aliasing rules [-Wstrict-aliasing]
DES_bs_b.c:1445:4: warning: dereferencing type-punned pointer will break
strict-aliasing rules [-Wstrict-aliasing]
    y(30, 45), y(31, 46), y(0, 47),
    ^
DES_bs_b.c:1445:4: warning: dereferencing type-punned pointer will break
strict-aliasing rules [-Wstrict-aliasing]
DES_bs_b.c:1445:4: warning: dereferencing type-punned pointer will break
strict-aliasing rules [-Wstrict-aliasing]
DES_bs_b.c:1458:3: warning: dereferencing type-punned pointer will break
strict-aliasing rules [-Wstrict-aliasing]
   s3(y(39, 60), y(40, 61), y(41, 62),
   ^
DES_bs_b.c:1458:3: warning: dereferencing type-punned pointer will break
strict-aliasing rules [-Wstrict-aliasing]
DES_bs_b.c:1458:3: warning: dereferencing type-punned pointer will break
strict-aliasing rules [-Wstrict-aliasing]
DES_bs_b.c:1459:4: warning: dereferencing type-punned pointer will break
strict-aliasing rules [-Wstrict-aliasing]
    y(42, 63), y(43, 64), y(44, 65),
    ^
DES_bs_b.c:1459:4: warning: dereferencing type-punned pointer will break
strict-aliasing rules [-Wstrict-aliasing]
DES_bs_b.c:1459:4: warning: dereferencing type-punned pointer will break
strict-aliasing rules [-Wstrict-aliasing]
DES_bs_b.c:1462:3: warning: dereferencing type-punned pointer will break
strict-aliasing rules [-Wstrict-aliasing]
   s4(y(43, 66), y(44, 67), y(45, 68),
   ^
DES_bs_b.c:1462:3: warning: dereferencing type-punned pointer will break
strict-aliasing rules [-Wstrict-aliasing]
DES_bs_b.c:1462:3: warning: dereferencing type-punned pointer will break
strict-aliasing rules [-Wstrict-aliasing]
DES_bs_b.c:1463:4: warning: dereferencing type-punned pointer will break
strict-aliasing rules [-Wstrict-aliasing]
    y(46, 69), y(47, 70), y(48, 71),
    ^
DES_bs_b.c:1463:4: warning: dereferencing type-punned pointer will break
strict-aliasing rules [-Wstrict-aliasing]
DES_bs_b.c:1463:4: warning: dereferencing type-punned pointer will break
strict-aliasing rules [-Wstrict-aliasing]
DES_bs_b.c:1472:3: warning: dereferencing type-punned pointer will break
strict-aliasing rules [-Wstrict-aliasing]
   s7(y(55, 84), y(56, 85), y(57, 86),
   ^
DES_bs_b.c:1472:3: warning: dereferencing type-punned pointer will break
strict-aliasing rules [-Wstrict-aliasing]
DES_bs_b.c:1472:3: warning: dereferencing type-punned pointer will break
strict-aliasing rules [-Wstrict-aliasing]
DES_bs_b.c:1473:4: warning: dereferencing type-punned pointer will break
strict-aliasing rules [-Wstrict-aliasing]
    y(58, 87), y(59, 88), y(60, 89),
    ^
DES_bs_b.c:1473:4: warning: dereferencing type-punned pointer will break
strict-aliasing rules [-Wstrict-aliasing]
DES_bs_b.c:1473:4: warning: dereferencing type-punned pointer will break
strict-aliasing rules [-Wstrict-aliasing]
DES_bs_b.c:1476:3: warning: dereferencing type-punned pointer will break
strict-aliasing rules [-Wstrict-aliasing]
   s8(y(59, 90), y(60, 91), y(61, 92),
   ^
DES_bs_b.c:1476:3: warning: dereferencing type-punned pointer will break
strict-aliasing rules [-Wstrict-aliasing]
DES_bs_b.c:1476:3: warning: dereferencing type-punned pointer will break
strict-aliasing rules [-Wstrict-aliasing]
DES_bs_b.c:1477:4: warning: dereferencing type-punned pointer will break
strict-aliasing rules [-Wstrict-aliasing]
    y(62, 93), y(63, 94), y(32, 95),
    ^
DES_bs_b.c:1477:4: warning: dereferencing type-punned pointer will break
strict-aliasing rules [-Wstrict-aliasing]
DES_bs_b.c:1477:4: warning: dereferencing type-punned pointer will break
strict-aliasing rules [-Wstrict-aliasing]
DES_bs_b.c: In function ‘DES_bs_crypt’:
DES_bs_b.c:1538:4: warning: dereferencing type-punned pointer will break
strict-aliasing rules [-Wstrict-aliasing]
    vtype zero = vzero;
    ^
DES_bs_b.c: In function ‘DES_bs_finalize_keys_LM’:
DES_bs_b.c:1656:4: warning: dereferencing type-punned pointer will break
strict-aliasing rules [-Wstrict-aliasing]
    FINALIZE_NEXT_KEY_BIT_0
    ^
DES_bs_b.c:1657:4: warning: dereferencing type-punned pointer will break
strict-aliasing rules [-Wstrict-aliasing]
    FINALIZE_NEXT_KEY_BIT_1
    ^
DES_bs_b.c:1658:4: warning: dereferencing type-punned pointer will break
strict-aliasing rules [-Wstrict-aliasing]
    FINALIZE_NEXT_KEY_BIT_2
    ^
DES_bs_b.c:1659:4: warning: dereferencing type-punned pointer will break
strict-aliasing rules [-Wstrict-aliasing]
    FINALIZE_NEXT_KEY_BIT_3
    ^
DES_bs_b.c:1660:4: warning: dereferencing type-punned pointer will break
strict-aliasing rules [-Wstrict-aliasing]
    FINALIZE_NEXT_KEY_BIT_4
    ^
DES_bs_b.c:1661:4: warning: dereferencing type-punned pointer will break
strict-aliasing rules [-Wstrict-aliasing]
    FINALIZE_NEXT_KEY_BIT_5
    ^
DES_bs_b.c:1662:4: warning: dereferencing type-punned pointer will break
strict-aliasing rules [-Wstrict-aliasing]
    FINALIZE_NEXT_KEY_BIT_6
    ^
DES_bs_b.c:1663:4: warning: dereferencing type-punned pointer will break
strict-aliasing rules [-Wstrict-aliasing]
    FINALIZE_NEXT_KEY_BIT_7
    ^
DES_bs_b.c: In function ‘DES_bs_crypt_LM’:
DES_bs_b.c:1700:4: warning: dereferencing type-punned pointer will break
strict-aliasing rules [-Wstrict-aliasing]
    vtype z = vzero, o = vones;
    ^
DES_bs_b.c:1700:4: warning: dereferencing type-punned pointer will break
strict-aliasing rules [-Wstrict-aliasing]
DES_bs_b.c:1722:4: warning: dereferencing type-punned pointer will break
strict-aliasing rules [-Wstrict-aliasing]
    s1(y(31, 0), y(0, 1), y(1, 2),
    ^
DES_bs_b.c:1722:4: warning: dereferencing type-punned pointer will break
strict-aliasing rules [-Wstrict-aliasing]
DES_bs_b.c:1722:4: warning: dereferencing type-punned pointer will break
strict-aliasing rules [-Wstrict-aliasing]
DES_bs_b.c:1723:5: warning: dereferencing type-punned pointer will break
strict-aliasing rules [-Wstrict-aliasing]
     y(2, 3), y(3, 4), y(4, 5),
     ^
DES_bs_b.c:1723:5: warning: dereferencing type-punned pointer will break
strict-aliasing rules [-Wstrict-aliasing]
DES_bs_b.c:1723:5: warning: dereferencing type-punned pointer will break
strict-aliasing rules [-Wstrict-aliasing]
DES_bs_b.c:1726:4: warning: dereferencing type-punned pointer will break
strict-aliasing rules [-Wstrict-aliasing]
    s2(y(3, 6), y(4, 7), y(5, 8),
    ^
DES_bs_b.c:1726:4: warning: dereferencing type-punned pointer will break
strict-aliasing rules [-Wstrict-aliasing]
DES_bs_b.c:1726:4: warning: dereferencing type-punned pointer will break
strict-aliasing rules [-Wstrict-aliasing]
DES_bs_b.c:1727:5: warning: dereferencing type-punned pointer will break
strict-aliasing rules [-Wstrict-aliasing]
     y(6, 9), y(7, 10), y(8, 11),
     ^
DES_bs_b.c:1727:5: warning: dereferencing type-punned pointer will break
strict-aliasing rules [-Wstrict-aliasing]
DES_bs_b.c:1727:5: warning: dereferencing type-punned pointer will break
strict-aliasing rules [-Wstrict-aliasing]
DES_bs_b.c:1730:4: warning: dereferencing type-punned pointer will break
strict-aliasing rules [-Wstrict-aliasing]
    s3(y(7, 12), y(8, 13), y(9, 14),
    ^
DES_bs_b.c:1730:4: warning: dereferencing type-punned pointer will break
strict-aliasing rules [-Wstrict-aliasing]
DES_bs_b.c:1730:4: warning: dereferencing type-punned pointer will break
strict-aliasing rules [-Wstrict-aliasing]
DES_bs_b.c:1731:5: warning: dereferencing type-punned pointer will break
strict-aliasing rules [-Wstrict-aliasing]
     y(10, 15), y(11, 16), y(12, 17),
     ^
DES_bs_b.c:1731:5: warning: dereferencing type-punned pointer will break
strict-aliasing rules [-Wstrict-aliasing]
DES_bs_b.c:1731:5: warning: dereferencing type-punned pointer will break
strict-aliasing rules [-Wstrict-aliasing]
DES_bs_b.c:1734:4: warning: dereferencing type-punned pointer will break
strict-aliasing rules [-Wstrict-aliasing]
    s4(y(11, 18), y(12, 19), y(13, 20),
    ^
DES_bs_b.c:1734:4: warning: dereferencing type-punned pointer will break
strict-aliasing rules [-Wstrict-aliasing]
DES_bs_b.c:1734:4: warning: dereferencing type-punned pointer will break
strict-aliasing rules [-Wstrict-aliasing]
DES_bs_b.c:1735:5: warning: dereferencing type-punned pointer will break
strict-aliasing rules [-Wstrict-aliasing]
     y(14, 21), y(15, 22), y(16, 23),
     ^
DES_bs_b.c:1735:5: warning: dereferencing type-punned pointer will break
strict-aliasing rules [-Wstrict-aliasing]
DES_bs_b.c:1735:5: warning: dereferencing type-punned pointer will break
strict-aliasing rules [-Wstrict-aliasing]
DES_bs_b.c:1738:4: warning: dereferencing type-punned pointer will break
strict-aliasing rules [-Wstrict-aliasing]
    s5(y(15, 24), y(16, 25), y(17, 26),
    ^
DES_bs_b.c:1738:4: warning: dereferencing type-punned pointer will break
strict-aliasing rules [-Wstrict-aliasing]
DES_bs_b.c:1738:4: warning: dereferencing type-punned pointer will break
strict-aliasing rules [-Wstrict-aliasing]
DES_bs_b.c:1739:5: warning: dereferencing type-punned pointer will break
strict-aliasing rules [-Wstrict-aliasing]
     y(18, 27), y(19, 28), y(20, 29),
     ^
DES_bs_b.c:1739:5: warning: dereferencing type-punned pointer will break
strict-aliasing rules [-Wstrict-aliasing]
DES_bs_b.c:1739:5: warning: dereferencing type-punned pointer will break
strict-aliasing rules [-Wstrict-aliasing]
DES_bs_b.c:1742:4: warning: dereferencing type-punned pointer will break
strict-aliasing rules [-Wstrict-aliasing]
    s6(y(19, 30), y(20, 31), y(21, 32),
    ^
DES_bs_b.c:1742:4: warning: dereferencing type-punned pointer will break
strict-aliasing rules [-Wstrict-aliasing]
DES_bs_b.c:1742:4: warning: dereferencing type-punned pointer will break
strict-aliasing rules [-Wstrict-aliasing]
DES_bs_b.c:1743:5: warning: dereferencing type-punned pointer will break
strict-aliasing rules [-Wstrict-aliasing]
     y(22, 33), y(23, 34), y(24, 35),
     ^
DES_bs_b.c:1743:5: warning: dereferencing type-punned pointer will break
strict-aliasing rules [-Wstrict-aliasing]
DES_bs_b.c:1743:5: warning: dereferencing type-punned pointer will break
strict-aliasing rules [-Wstrict-aliasing]
DES_bs_b.c:1746:4: warning: dereferencing type-punned pointer will break
strict-aliasing rules [-Wstrict-aliasing]
    s7(y(23, 36), y(24, 37), y(25, 38),
    ^
DES_bs_b.c:1746:4: warning: dereferencing type-punned pointer will break
strict-aliasing rules [-Wstrict-aliasing]
DES_bs_b.c:1746:4: warning: dereferencing type-punned pointer will break
strict-aliasing rules [-Wstrict-aliasing]
DES_bs_b.c:1747:5: warning: dereferencing type-punned pointer will break
strict-aliasing rules [-Wstrict-aliasing]
     y(26, 39), y(27, 40), y(28, 41),
     ^
DES_bs_b.c:1747:5: warning: dereferencing type-punned pointer will break
strict-aliasing rules [-Wstrict-aliasing]
DES_bs_b.c:1747:5: warning: dereferencing type-punned pointer will break
strict-aliasing rules [-Wstrict-aliasing]
DES_bs_b.c:1750:4: warning: dereferencing type-punned pointer will break
strict-aliasing rules [-Wstrict-aliasing]
    s8(y(27, 42), y(28, 43), y(29, 44),
    ^
DES_bs_b.c:1750:4: warning: dereferencing type-punned pointer will break
strict-aliasing rules [-Wstrict-aliasing]
DES_bs_b.c:1750:4: warning: dereferencing type-punned pointer will break
strict-aliasing rules [-Wstrict-aliasing]
DES_bs_b.c:1751:5: warning: dereferencing type-punned pointer will break
strict-aliasing rules [-Wstrict-aliasing]
     y(30, 45), y(31, 46), y(0, 47),
     ^
DES_bs_b.c:1751:5: warning: dereferencing type-punned pointer will break
strict-aliasing rules [-Wstrict-aliasing]
DES_bs_b.c:1751:5: warning: dereferencing type-punned pointer will break
strict-aliasing rules [-Wstrict-aliasing]
DES_bs_b.c:1755:4: warning: dereferencing type-punned pointer will break
strict-aliasing rules [-Wstrict-aliasing]
    s1(y(63, 48), y(32, 49), y(33, 50),
    ^
DES_bs_b.c:1755:4: warning: dereferencing type-punned pointer will break
strict-aliasing rules [-Wstrict-aliasing]
DES_bs_b.c:1755:4: warning: dereferencing type-punned pointer will break
strict-aliasing rules [-Wstrict-aliasing]
DES_bs_b.c:1756:5: warning: dereferencing type-punned pointer will break
strict-aliasing rules [-Wstrict-aliasing]
     y(34, 51), y(35, 52), y(36, 53),
     ^
DES_bs_b.c:1756:5: warning: dereferencing type-punned pointer will break
strict-aliasing rules [-Wstrict-aliasing]
DES_bs_b.c:1756:5: warning: dereferencing type-punned pointer will break
strict-aliasing rules [-Wstrict-aliasing]
DES_bs_b.c:1759:4: warning: dereferencing type-punned pointer will break
strict-aliasing rules [-Wstrict-aliasing]
    s2(y(35, 54), y(36, 55), y(37, 56),
    ^
DES_bs_b.c:1759:4: warning: dereferencing type-punned pointer will break
strict-aliasing rules [-Wstrict-aliasing]
DES_bs_b.c:1759:4: warning: dereferencing type-punned pointer will break
strict-aliasing rules [-Wstrict-aliasing]
DES_bs_b.c:1760:5: warning: dereferencing type-punned pointer will break
strict-aliasing rules [-Wstrict-aliasing]
     y(38, 57), y(39, 58), y(40, 59),
     ^
DES_bs_b.c:1760:5: warning: dereferencing type-punned pointer will break
strict-aliasing rules [-Wstrict-aliasing]
DES_bs_b.c:1760:5: warning: dereferencing type-punned pointer will break
strict-aliasing rules [-Wstrict-aliasing]
DES_bs_b.c:1763:4: warning: dereferencing type-punned pointer will break
strict-aliasing rules [-Wstrict-aliasing]
    s3(y(39, 60), y(40, 61), y(41, 62),
    ^
DES_bs_b.c:1763:4: warning: dereferencing type-punned pointer will break
strict-aliasing rules [-Wstrict-aliasing]
DES_bs_b.c:1763:4: warning: dereferencing type-punned pointer will break
strict-aliasing rules [-Wstrict-aliasing]
DES_bs_b.c:1764:5: warning: dereferencing type-punned pointer will break
strict-aliasing rules [-Wstrict-aliasing]
     y(42, 63), y(43, 64), y(44, 65),
     ^
DES_bs_b.c:1764:5: warning: dereferencing type-punned pointer will break
strict-aliasing rules [-Wstrict-aliasing]
DES_bs_b.c:1764:5: warning: dereferencing type-punned pointer will break
strict-aliasing rules [-Wstrict-aliasing]
DES_bs_b.c:1767:4: warning: dereferencing type-punned pointer will break
strict-aliasing rules [-Wstrict-aliasing]
    s4(y(43, 66), y(44, 67), y(45, 68),
    ^
DES_bs_b.c:1767:4: warning: dereferencing type-punned pointer will break
strict-aliasing rules [-Wstrict-aliasing]
DES_bs_b.c:1767:4: warning: dereferencing type-punned pointer will break
strict-aliasing rules [-Wstrict-aliasing]
DES_bs_b.c:1768:5: warning: dereferencing type-punned pointer will break
strict-aliasing rules [-Wstrict-aliasing]
     y(46, 69), y(47, 70), y(48, 71),
     ^
DES_bs_b.c:1768:5: warning: dereferencing type-punned pointer will break
strict-aliasing rules [-Wstrict-aliasing]
DES_bs_b.c:1768:5: warning: dereferencing type-punned pointer will break
strict-aliasing rules [-Wstrict-aliasing]
DES_bs_b.c:1771:4: warning: dereferencing type-punned pointer will break
strict-aliasing rules [-Wstrict-aliasing]
    s5(y(47, 72), y(48, 73), y(49, 74),
    ^
DES_bs_b.c:1771:4: warning: dereferencing type-punned pointer will break
strict-aliasing rules [-Wstrict-aliasing]
DES_bs_b.c:1771:4: warning: dereferencing type-punned pointer will break
strict-aliasing rules [-Wstrict-aliasing]
DES_bs_b.c:1772:5: warning: dereferencing type-punned pointer will break
strict-aliasing rules [-Wstrict-aliasing]
     y(50, 75), y(51, 76), y(52, 77),
     ^
DES_bs_b.c:1772:5: warning: dereferencing type-punned pointer will break
strict-aliasing rules [-Wstrict-aliasing]
DES_bs_b.c:1772:5: warning: dereferencing type-punned pointer will break
strict-aliasing rules [-Wstrict-aliasing]
DES_bs_b.c:1775:4: warning: dereferencing type-punned pointer will break
strict-aliasing rules [-Wstrict-aliasing]
    s6(y(51, 78), y(52, 79), y(53, 80),
    ^
DES_bs_b.c:1775:4: warning: dereferencing type-punned pointer will break
strict-aliasing rules [-Wstrict-aliasing]
DES_bs_b.c:1775:4: warning: dereferencing type-punned pointer will break
strict-aliasing rules [-Wstrict-aliasing]
DES_bs_b.c:1776:5: warning: dereferencing type-punned pointer will break
strict-aliasing rules [-Wstrict-aliasing]
     y(54, 81), y(55, 82), y(56, 83),
     ^
DES_bs_b.c:1776:5: warning: dereferencing type-punned pointer will break
strict-aliasing rules [-Wstrict-aliasing]
DES_bs_b.c:1776:5: warning: dereferencing type-punned pointer will break
strict-aliasing rules [-Wstrict-aliasing]
DES_bs_b.c:1779:4: warning: dereferencing type-punned pointer will break
strict-aliasing rules [-Wstrict-aliasing]
    s7(y(55, 84), y(56, 85), y(57, 86),
    ^
DES_bs_b.c:1779:4: warning: dereferencing type-punned pointer will break
strict-aliasing rules [-Wstrict-aliasing]
DES_bs_b.c:1779:4: warning: dereferencing type-punned pointer will break
strict-aliasing rules [-Wstrict-aliasing]
DES_bs_b.c:1780:5: warning: dereferencing type-punned pointer will break
strict-aliasing rules [-Wstrict-aliasing]
     y(58, 87), y(59, 88), y(60, 89),
     ^
DES_bs_b.c:1780:5: warning: dereferencing type-punned pointer will break
strict-aliasing rules [-Wstrict-aliasing]
DES_bs_b.c:1780:5: warning: dereferencing type-punned pointer will break
strict-aliasing rules [-Wstrict-aliasing]
DES_bs_b.c:1783:4: warning: dereferencing type-punned pointer will break
strict-aliasing rules [-Wstrict-aliasing]
    s8(y(59, 90), y(60, 91), y(61, 92),
    ^
DES_bs_b.c:1783:4: warning: dereferencing type-punned pointer will break
strict-aliasing rules [-Wstrict-aliasing]
DES_bs_b.c:1783:4: warning: dereferencing type-punned pointer will break
strict-aliasing rules [-Wstrict-aliasing]
DES_bs_b.c:1784:5: warning: dereferencing type-punned pointer will break
strict-aliasing rules [-Wstrict-aliasing]
     y(62, 93), y(63, 94), y(32, 95),
     ^
DES_bs_b.c:1784:5: warning: dereferencing type-punned pointer will break
strict-aliasing rules [-Wstrict-aliasing]
DES_bs_b.c:1784:5: warning: dereferencing type-punned pointer will break
strict-aliasing rules [-Wstrict-aliasing]



./john --test --format=descrypt works, despite these warnings.


$ uname -a
Linux raspberrypi 4.1.7-v7+ #817 SMP PREEMPT Sat Sep 19 15:32:00 BST
2015 armv7l GNU/Linux

$ gcc --version
gcc (Raspbian 4.9.2-10) 4.9.2
Copyright (C) 2014 Free Software Foundation, Inc.
This is free software; see the source for copying conditions.  There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

$ tail -n 13 /proc/cpuinfo |grep -v "^Serial"
processor    : 3
model name    : ARMv7 Processor rev 5 (v7l)
BogoMIPS    : 57.60
Features    : half thumb fastmult vfp edsp neon vfpv3 tls vfpv4 idiva
idivt vfpd32 lpae evtstrm
CPU implementer    : 0x41
CPU architecture: 7
CPU variant    : 0x0
CPU part    : 0xc07
CPU revision    : 5

Hardware    : BCM2709
Revision    : a01041



This is the github issue:
https://github.com/magnumripper/JohnTheRipper/issues/1871


Frank

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