(ITS#8000) Warnings building contrib overlay passwd/sha2

[michael@stroeder.com]

Full_Name: 
Version: RE24
OS: 
URL: 
Submission from: (NULL) (79.227.174.182)


HI!

I'm trying to package passwd/sha2 for openSUSE.
The default compiler options in their build system results in these warnings:

[  193s] + CFLAGS='-fomit-frame-pointer -fmessage-length=0 -grecord-gcc-switches
-fstack-protector -O2 -Wall -D_FORTIFY_SOURCE=2 -funwind-tables
-fasynchronous-unwind-tables -g -Wno-format-extra-args -fno-strict-aliasing'
[  193s] + make -j4 sysconfdir=/etc/openldap libdir=/usr/lib
libexecdir=/usr/lib
[  193s] ../../../../libtool --mode=compile gcc -g -O2 -Wall 
-I..%2.%./../../include -I../../../../include -I../../../../servers/slapd -c
slapd-sha2.c
[  193s] ../../../../libtool --mode=compile gcc -g -O2 -Wall 
-I../../../../include -I../../../../include -I../../../../servers/slapd -c
sha2.c
[  193s] mkdir .libs
[  193s] mkdir .libs
[  193s] mkdir: cannot create directory '.libs': File exists
[  193s]  gcc -g -O2 -Wall -I../../../../include -I../../../../include
-I../../../../servers/slapd -c sha2.c  -fPIC -DPIC -o .libs/sha2.o
[  193s]  gcc -g -O2 -Wall -I../../../../include -I../../../../include
-I../../../../servers/slapd -c slapd-sha2.c  -fPIC -DPIC -o .libs/slapd-sha2.o
[  193s] sha2.c: In function 'SHA256_Final':
[  193s] sha2.c:608:3: warning: dereferencing type-punned pointer will break
strict-aliasing rules [-Wstrict-aliasing]
[  193s]    *(sha2_word64*)&context->buffer[SHA256_SHORT_BLOCK_LENGTH] =
context->bitcount;
[  193s]    ^
[  193s] sha2.c: In function 'SHA512_Last':
[  193s] sha2.c:925:2: warning: dereferencing type-punned pointer will break
strict-aliasing rules [-Wstrict-aliasing]
[  193s]   *(sha2_word64*)&context->buffer[SHA512_SHORT_BLOCK_LENGTH] =
context->bitcount[1];
[  193s]   ^
[  193s] sha2.c:926:2: warning: dereferencing type-punned pointer will break
strict-aliasing rules [-Wstrict-aliasing]
[  193s]   *(sha2_word64*)&context->buffer[SHA512_SHORT_BLOCK_LENGTH+8] =
context->bitcount[0];
[  193s]   ^
[  193s]  gcc -g -O2 -Wall -I../../../../include -I../../../../include
-I../../../../servers/slapd -c slapd-sha2.c -o slapd-sha2.o >/dev/null
2>&1
[  193s]  gcc -g -O2 -Wall -I../../../../include -I../../../../include
-I../../../../servers/slapd -c sha2.c -o sha2.o >/dev/null 2>&1
[  194s] ../../../../libtool --mode=link gcc -g -O2 -Wall -version-info 0:0:0 \
[  194s] -rpath /usr/lib/openldap -module -o pw-sha2.la slapd-sha2.lo sha2.lo
../../../../libraries/libldap_r/libldap_r.la
../../../../libraries/liblber/liblber.la
[  194s] cc -shared  .libs/slapd-sha2.o .libs/sha2.o  -Wl,--rpath
-Wl,/home/abuild/rpmbuild/BUILD/openldap-2.4.40/libraries/libldap_r/.libs
-Wl,--rpath -Wl,/home/abuild/rpmbuild/BUILD/openldap-2.4.40/libraries/liblber/.libs
-L/home/abuild/rpmbuild/BUILD/openldap-2.4.40/libraries/liblber/.libs
../../../../libraries/libldap_r/.libs/libldap_r.so
../../../../libraries/liblber/.libs/liblber.so  -Wl,-soname -Wl,pw-sha2.so.0 -o
.libs/pw-sha2.so.0.0.0
[  194s] (cd .libs && rm -f pw-sha2.so.0 && ln -s
pw-sha2.so.0.0.0 pw-sha2.so.0)
[  194s] (cd .libs && rm -f pw-sha2.so && ln -s pw-sha2.so.0.0.0
pw-sha2.so)
[  194s] ar cru .libs/pw-sha2.a  slapd-sha2.o sha2.o
[  194s] ranlib .libs/pw-sha2.a
[  194s] creating pw-sha2.la


Overall RPM build fails with:

[  262s] I: Program is likely to break with new gcc. Try -fno-strict-aliasing.
[  262s] W: openldap2 strict-aliasing-punning sha2.c:608, 925, 926