[Bug 207096] archivers/lzo2: on arm cortex-a7, ./lzotest/lzotest -mlzo -n2 -q ./COPYING gets "Signal 10" and stops the build

[bugzilla-noreply at freebsd.org]

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=207096

            Bug ID: 207096
           Summary: archivers/lzo2: on arm cortex-a7, ./lzotest/lzotest
                    -mlzo -n2 -q ./COPYING gets "Signal 10" and stops the
                    build
           Product: Ports & Packages
           Version: Latest
          Hardware: arm
                OS: Any
            Status: New
          Severity: Affects Only Me
          Priority: ---
         Component: Individual Port(s)
          Assignee: mandree at FreeBSD.org
          Reporter: markmi at dsl-only.net
             Flags: maintainer-feedback?(mandree at FreeBSD.org)
          Assignee: mandree at FreeBSD.org

[Context basics: projects/clang380-import -r295351 for buildworld/buildkernel
that targeted an rpi2 (armv7-a/cortex-a7). This context requires strict
alignment: FreeBSD 11.0-CURRNET has SCTLR bit[1]==1 for such contexts.]

When I attempt portinstall/powermaster builds for an arm rpi2 context that
depend on lzo2 I get the following.

. . .

   LZO configuration summary
   -------------------------
   LZO version                : 2.09
   configured for host        : armv6-portbld-freebsd11.0
   source code location       : .
   compiler                   : /usr/bin/clang
   preprocessor definitions   : -DLZO_HAVE_CONFIG_H=1
   preprocessor flags         : 
   compiler flags             : -O -pipe -target armv6--freebsd11.0-gnueabi
-march=armv7-a -mcpu=cortex-a7 -mfloat-abi=softfp -mno-unaligned-access
-mfloat-abi=softfp  -fno-strict-aliasing
   build static library       : yes
   build shared library       : yes
   enable i386 assembly code  : no
. . .
===>  Running self-tests for lzo2-2.09 (can take a few minutes)
cd /usr/obj/portswork/usr/ports/archivers/lzo2/work/lzo-2.09 && /usr/bin/env
MALLOC_OPTIONS=jz make check test SHELL="/bin/sh -x"
make  check-local
./lzotest/lzotest -mlzo -n2 -q ./COPYING
*** Signal 10

Stop.
make[3]: stopped in /usr/obj/portswork/usr/ports/archivers/lzo2/work/lzo-2.09
*** Error code 1
. . .

(which stops the overall build).

Stop reading the description here if you do not care about supporting details
at this point.

Other context details:

# freebsd-version -ku; uname -aKU
11.0-CURRENT
11.0-CURRENT
FreeBSD rpi2 11.0-CURRENT FreeBSD 11.0-CURRENT #14 r295351M: Sun Feb  7
03:23:24 PST 2016    
markmi at FreeBSDx64:/usr/obj/clang/arm.armv6/usr/src/sys/RPI2-NODBG  arm 1100097
1100097

# more /etc/make.conf 
DEFAULT_VERSIONS+=perl5=5.22
WRKDIRPREFIX=/usr/obj/portswork
WITH_DEBUG_FILES=
MALLOC_PRODUCTION=
#
TO_TYPE=armv6
VERSION_CONTEXT=11.0
CFLAGS+=-target ${TO_TYPE}--freebsd${VERSION_CONTEXT}-gnueabi -march=armv7-a
-mcpu=cortex-a7 -mfloat-abi=softfp -mno-unaligned-access
.if ${.MAKE.LEVEL} == 0
CC=/usr/bin/clang
CXX=/usr/bin/clang++
CPP=/usr/bin/clang-cpp
.export CC
.export CXX
.export CPP
.endif


# gdb
/usr/obj/portswork/usr/ports/archivers/lzo2/work/lzo-2.09/lzotest/.libs/lzotest
/var/crash/lzotest.90450.core 
GNU gdb 6.1.1 [FreeBSD]
. . .
#0  _lzo_config_check () at src/lzo_init.c:117
117         r &= UA_GET_NE16(p) == 0;
(gdb) bt
#0  _lzo_config_check () at src/lzo_init.c:117
#1  0x2007de68 in __lzo_init_v2 (v=8336, s1=2, s2=4, s3=4, s4=4, s5=4, s6=4,
s7=4, s8=4, s9=24) at src/lzo_init.c:226
#2  0x0000b958 in main (argc=5, argv=0xbfbfe928) at lzotest/lzotest.c:1916

For reference. . .

(gdb) info reg
r0             0xbfbfe581       -1077942911
. . .
lr             0x2007d8b0       537385136
pc             0x2007d8b4       537385140
. . .
0x2007d8ac <_lzo_config_check+192>:     bl      0x2007dc08 <u2p>
0x2007d8b0 <_lzo_config_check+196>:     str     r0, [r11, #-36]
0x2007d8b4 <_lzo_config_check+200>:     ldrh    r0, [r0]
. . .
    u.a[0] = u.a[1] = 0;
    u.b[0] = 1; u.b[3] = 2;
    p = u2p(&u, 1);
    r &= UA_GET_NE16(p) == 0;

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