This is just a hand-made report of the git-head issue.

----

From few weeks ago, dmd test suite sometimes fails on Linux 64bit platforms (both 32_64 and 64_64).

It occurs with the combination of -O and -fPIC.

    Creating output directory: test_results

    Building d_do_test tool

    OS: posix

    Creating output directory: generated

    Building d_do_test tool

    OS: posix

    Running compilable tests

    Running runnable tests

    Running fail compilation tests

     ... fail_compilation/bug4283.d     ()

    [snip]

     ... runnable/test42.d              (-inline -release -gc -O -fPIC)

    Test failed.  The logged output:

    ../src/dmd -m64 -Irunnable   -odgenerated/runnable -ofgenerated/runnable/test42_0 runnable/test42.d

    ../src/dmd -m64 -Irunnable  -inline -odgenerated/runnable -ofgenerated/runnable/test42_1 runnable/test42.d

    ../src/dmd -m64 -Irunnable  -release -odgenerated/runnable -ofgenerated/runnable/test42_2 runnable/test42.d

    ../src/dmd -m64 -Irunnable  -inline -release -odgenerated/runnable -ofgenerated/runnable/test42_3 runnable/test42.d

    ../src/dmd -m64 -Irunnable  -gc -odgenerated/runnable -ofgenerated/runnable/test42_4 runnable/test42.d

    ../src/dmd -m64 -Irunnable  -inline -gc -odgenerated/runnable -ofgenerated/runnable/test42_5 runnable/test42.d

    ../src/dmd -m64 -Irunnable  -release -gc -odgenerated/runnable -ofgenerated/runnable/test42_6 runnable/test42.d

    ../src/dmd -m64 -Irunnable  -inline -release -gc -odgenerated/runnable -ofgenerated/runnable/test42_7 runnable/test42.d

    ../src/dmd -m64 -Irunnable  -O -odgenerated/runnable -ofgenerated/runnable/test42_8 runnable/test42.d

    ../src/dmd -m64 -Irunnable  -inline -O -odgenerated/runnable -ofgenerated/runnable/test42_9 runnable/test42.d

    ../src/dmd -m64 -Irunnable  -release -O -odgenerated/runnable -ofgenerated/runnable/test42_10 runnable/test42.d

    ../src/dmd -m64 -Irunnable  -inline -release -O -odgenerated/runnable -ofgenerated/runnable/test42_11 runnable/test42.d

    ../src/dmd -m64 -Irunnable  -gc -O -odgenerated/runnable -ofgenerated/runnable/test42_12 runnable/test42.d

    ../src/dmd -m64 -Irunnable  -inline -gc -O -odgenerated/runnable -ofgenerated/runnable/test42_13 runnable/test42.d

    ../src/dmd -m64 -Irunnable  -release -gc -O -odgenerated/runnable -ofgenerated/runnable/test42_14 runnable/test42.d

    ../src/dmd -m64 -Irunnable  -inline -release -gc -O -odgenerated/runnable -ofgenerated/runnable/test42_15 runnable/test42.d

    ../src/dmd -m64 -Irunnable  -fPIC -odgenerated/runnable -ofgenerated/runnable/test42_16 runnable/test42.d

    ../src/dmd -m64 -Irunnable  -inline -fPIC -odgenerated/runnable -ofgenerated/runnable/test42_17 runnable/test42.d

    ../src/dmd -m64 -Irunnable  -release -fPIC -odgenerated/runnable -ofgenerated/runnable/test42_18 runnable/test42.d

    ../src/dmd -m64 -Irunnable  -inline -release -fPIC -odgenerated/runnable -ofgenerated/runnable/test42_19 runnable/test42.d

    ../src/dmd -m64 -Irunnable  -gc -fPIC -odgenerated/runnable -ofgenerated/runnable/test42_20 runnable/test42.d

    ../src/dmd -m64 -Irunnable  -inline -gc -fPIC -odgenerated/runnable -ofgenerated/runnable/test42_21 runnable/test42.d

    ../src/dmd -m64 -Irunnable  -release -gc -fPIC -odgenerated/runnable -ofgenerated/runnable/test42_22 runnable/test42.d

    ../src/dmd -m64 -Irunnable  -inline -release -gc -fPIC -odgenerated/runnable -ofgenerated/runnable/test42_23 runnable/test42.d

    ../src/dmd -m64 -Irunnable  -O -fPIC -odgenerated/runnable -ofgenerated/runnable/test42_24 runnable/test42.d

    success

    Not ported to x86-64 compatible varargs, yet.

    myInt int

    myBool bool

    i

    s

    C6test4211__T4T219TiZ1C

    C6test427test219FZv11__T4T219TiZ1C

    generated/runnable/test42_24

    core.exception.AssertError@test42(625): Assertion failure

    ----------------

    generated/runnable/test42_24(_d_assertm+0x26) [0x4ad8e2]

    generated/runnable/test42_24() [0x4aac23]

    generated/runnable/test42_24(void test42.test41()+0x41) [0x485b6d]

    generated/runnable/test42_24(_Dmain+0xc7) [0x48f0a3]

    generated/runnable/test42_24(extern (C) int rt.dmain2._d_run_main(int, char**, extern (C) int function(char[][])*).void runAll().void __lambda285()+0x18) [0x4b0520]

    generated/runnable/test42_24(extern (C) int rt.dmain2._d_run_main(int, char**, extern (C) int function(char[][])*).void tryExec(scope void delegate())+0x2a) [0x4afd42]

    generated/runnable/test42_24(extern (C) int rt.dmain2._d_run_main(int, char**, extern (C) int function(char[][])*).void runAll()+0x37) [0x4b04d7]

    generated/runnable/test42_24(extern (C) int rt.dmain2._d_run_main(int, char**, extern (C) int function(char[][])*).void tryExec(scope void delegate())+0x2a) [0x4afd42]

    generated/runnable/test42_24(_d_run_main+0x1a3) [0x4afcc3]

    generated/runnable/test42_24(main+0x14) [0x4917f8]

    /lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0xed) [0x2b84efe0e30d]

    ----------------

    one

    two

    52

    9223372036854775807L

    18446744073709551615LU

    3

    0

    1

    2

    3

    4

    5

    6

    7

    8

    9

    s = foo

    s = test42.S35

    s = test42.S35

    s = 4855B4

    &x = 0x7fef00

    &s = 0x7fef10

    ~one

    ~two

    ==============================

    Test failed: expected rc == 0, exited with rc == 1

    make[1]: *** [generated/runnable/test42.d.out] Error 1

    make[1]: *** Waiting for unfinished jobs....

     ... runnable/test8182.d            (-inline -release -gc -O -fPIC)

     ... runnable/test7932.d            (-inline -release -gc -O -fPIC)

    make: *** [start_runnable_tests] Error 2

The earliest date of the occurrence is:

    Fetching updates to D-Programming-Language/dmd:

    Fetching origin

    From https://github.com/D-Programming-Language/dmd

     + 4cec471...2316b49 refs/pull/2502/head -> refs/pull/2502/head  (forced update)

     + 3ef32f2...301d9e9 refs/pull/2502/merge -> refs/pull/2502/merge  (forced update)

    Cloning source/D-Programming-Language/dmd.git into master-50328-Linux_32_64/dmd, branch master

    Cloning into /home/braddr/sandbox/d/d-tester/client/master-50328-Linux_32_64/dmd...

    done.

    Head commit:

    commit 66a38bb839f15d0744b603cc1484e223388644dd

    Merge: 2747184 9ddae72

    Author: Walter Bright <walter@walterbright.com>

    Date:   Wed Aug 28 00:28:43 2013 -0700

        Merge pull request #2500 from Ingrater/mslinker

        

        Fixed linker invocation when compiling dmd with visual studio

    Fetching updates to D-Programming-Language/druntime:

    Fetching origin

    Cloning source/D-Programming-Language/druntime.git into master-50328-Linux_32_64/druntime, branch master

    Cloning into /home/braddr/sandbox/d/d-tester/client/master-50328-Linux_32_64/druntime...

    done.

    Head commit:

    commit 7ad4524db2e83fc6dbca87fd82821c68a544b2d0

    Merge: 2c6c29b ae2c4df

    Author: Martin Nowak <code@dawg.eu>

    Date:   Tue Aug 27 12:56:32 2013 -0700

        Merge pull request #586 from redstar/freebsd

        

        Add FreeBSD header sys/elf.h

    Fetching updates to D-Programming-Language/phobos:

    Fetching origin

    From https://github.com/D-Programming-Language/phobos

     + 25552a6...3ec7e02 refs/pull/1224/merge -> refs/pull/1224/merge  (forced update)

     + 0e888d4...9ea5d97 refs/pull/1390/merge -> refs/pull/1390/merge  (forced update)

    Cloning source/D-Programming-Language/phobos.git into master-50328-Linux_32_64/phobos, branch master

    Cloning into /home/braddr/sandbox/d/d-tester/client/master-50328-Linux_32_64/phobos...

    done.

    Head commit:

    commit 40c6760019d5fb8aee4c317f5d86881fdd2d6cd8

    Merge: ca9accd 52cadf9

    Author: David Nadlinger <code@klickverbot.at>

    Date:   Wed Aug 28 01:35:15 2013 -0700

        Merge pull request #1082 from monarchdodra/emplace

        

        Fix emplace

Thanks.

Kenji Hara.