Paweł Sikora wrote: > On Sunday 19 of May 2013 20:34:28 Paul Lanken wrote: > > t@1 (l@1) program terminated by signal BUS (invalid address alignment) > > Current function is cmSHA512_Internal_Transform > > > > 1340 T1 = h + Sigma1_512(e) + Ch(e, f, g) + K512[j] + > > > > (W512[j] = *data++); > > (dbx) > > where > > current thread: t@1 > > =>[1] cmSHA512_Internal_Transform(context = 0x100bedee0, data = > > 0xffffffff7fffb70c), line 1340 in "cm_sha2.c" > > > > [2] cmSHA512_Update(context = 0x100bedee0, data = 0xffffffff7fffb70c > > > > "\x89PNG^M\n^Z\n", len = 358U), line 1428 in "cm_sha2.c" > > this is a classic sigbus bug - a x86 programmers nightmare on > sparc/arm/alpha :-) SHA512_Internal_Transform expects sha_word64* buffer > (8-byte aligned) and gcc emits a LDX opcode on *data accessing... but > passed data pointer isn't 8-byte aligned :0x...c > > moreover, the cm_sha2.c sources contains strict-aliasing-violationa and gcc > may emit unexpected code for lines like this: > > cm_sha2.c: *(sha_word64*)&context->s512.buffer[112] = > context->s512.bitcount[1]; cm_sha2.c: > *(sha_word64*)&context->s512.buffer[120] = context->s512.bitcount[0];
This isn't entirely unexpected: http://open.cdash.org/viewBuildError.php?type=1&buildid=2912493 Eike --
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