Bug 927565

Summary: ICE when building pdns on ARM
Product: [Fedora] Fedora Reporter: Peter Robinson <pbrobinson>
Component: gccAssignee: Jakub Jelinek <jakub>
Status: CLOSED CURRENTRELEASE QA Contact: Fedora Extras Quality Assurance <extras-qa>
Severity: unspecified Docs Contact:
Priority: unspecified    
Version: 19CC: jakub, law, mstevens, peter.van.dijk
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Fixed In Version: Doc Type: Bug Fix
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Last Closed: 2013-05-30 21:50:23 UTC Type: Bug
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
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Preprocessed source none

Description Peter Robinson 2013-03-26 08:58:22 UTC 
Created attachment 716370 [details]
Preprocessed source

Complete build:

http://arm.koji.fedoraproject.org/koji/taskinfo?taskID=1620800

Relevant crash:
gcc -DHAVE_CONFIG_H -I. -I../../.. -I../..   -pthread -DLDAP_DEPRECATED  -O2 -g -pipe -Wall -Wp,-D_FORTIFY_SOURCE=2 -fexceptions -fstack-protector --param=ssp-buffer-size=4 -specs=/usr/lib/rpm/redhat/redhat-hardened-cc1 -march=armv7-a -mfpu=vfpv3-d16  -mfloat-abi=hard -c -o aes_modes.o `test -f '../../aes/aes_modes.c' || echo './'`../../aes/aes_modes.c
In file included from ../../aes/aeskey.c:28:0:
../../aes/aeskey.c: In function 'aes_decrypt_key256':
../../aes/aesopt.h:329:28: warning: 'ss[5]' is used uninitialized in this function [-Wuninitialized]
 #  define to_byte(x)  ((x) & 0xff)
                            ^
../../aes/aeskey.c:492:17: note: 'ss[5]' was declared here
 {   uint_32t    ss[9];
                 ^
In file included from ../../aes/aeskey.c:28:0:
../../aes/aesopt.h:329:28: warning: 'ss[6]' is used uninitialized in this function [-Wuninitialized]
 #  define to_byte(x)  ((x) & 0xff)
                            ^
../../aes/aeskey.c:492:17: note: 'ss[6]' was declared here
 {   uint_32t    ss[9];
                 ^
In file included from ../../aes/aeskey.c:28:0:
../../aes/aesopt.h:329:28: warning: 'ss[7]' is used uninitialized in this function [-Wuninitialized]
 #  define to_byte(x)  ((x) & 0xff)
                            ^
../../aes/aeskey.c:492:17: note: 'ss[7]' was declared here
 {   uint_32t    ss[9];
                 ^
../../aes/aeskey.c:538:1: internal compiler error: in push_minipool_fix, at config/arm/arm.c:13518
 }
 ^
Please submit a full bug report,
with preprocessed source if appropriate.
See <http://bugzilla.redhat.com/bugzilla> for instructions.
gcc -DHAVE_CONFIG_H -I. -I../../.. -I../..   -pthread -DLDAP_DEPRECATED  -O2 -g -pipe -Wall -Wp,-D_FORTIFY_SOURCE=2 -fexceptions -fstack-protector --param=ssp-buffer-size=4 -specs=/usr/lib/rpm/redhat/redhat-hardened-cc1 -march=armv7-a -mfpu=vfpv3-d16  -mfloat-abi=hard -c -o aestab.o `test -f '../../aes/aestab.c' || echo './'`../../aes/aestab.c
g++ -DHAVE_CONFIG_H -I. -I../../.. -I../..   -pthread -DLDAP_DEPRECATED  -D_GNU_SOURCE -O2 -g -pipe -Wall -Wp,-D_FORTIFY_SOURCE=2 -fexceptions -fstack-protector --param=ssp-buffer-size=4 -specs=/usr/lib/rpm/redhat/redhat-hardened-cc1 -march=armv7-a -mfpu=vfpv3-d16  -mfloat-abi=hard -c -o zone2ldap.o zone2ldap.cc
g++ -DHAVE_CONFIG_H -I. -I../../.. -I../..   -pthread -DLDAP_DEPRECATED  -D_GNU_SOURCE -O2 -g -pipe -Wall -Wp,-D_FORTIFY_SOURCE=2 -fexceptions -fstack-protector --param=ssp-buffer-size=4 -specs=/usr/lib/rpm/redhat/redhat-hardened-cc1 -march=armv7-a -mfpu=vfpv3-d16  -mfloat-abi=hard -c -o zone2json.o zone2json.cc
Preprocessed source stored into /tmp/ccYmtamm.out file, please attach this to your bugreport.
make[6]: *** [aeskey.o] Error 1
make[6]: *** Waiting for unfinished jobs....
Comment 1 Jakub Jelinek 2013-03-26 10:11:08 UTC 
Tracked upstream (though, there doesn't seem to be rush to fix that).
I'd suggest you fix all the uninitialized warnings first, then the ICE might as well just go away (at least it does on the reduced testcase).
Even just memset (ss, 0, sizeof (ss)); at the beginning of aes_decrypt_key256
makes the ICE go away.  Of course, the question is if it actually works correctly that way, because ss[5], ss[6] and ss[7] are clearly used before they are initialized in that routine.
Comment 2 Morten Stevens 2013-04-18 13:38:26 UTC 
Upstream patch available:

http://wiki.powerdns.com/trac/changeset/3162/
Comment 3 Peter Robinson 2013-05-30 21:50:23 UTC 
Closing as fixed, if the gcc fix comes later all well and good