[Debian-mobcom-maintainers] Bug#898109: package fails to build with -O3

[Matthias Klose]

Package: src:openbsc
Version: 1.0.0-2
Severity: important
Tags: sid buster

cc -DHAVE_CONFIG_H -I. -I../..   -I../../include -I../..  -Wdate-time
-D_FORTIFY_SOURCE=2 -Wall -I/usr/include/ -I/usr/include/ -I/usr/include/
-I/usr/include/   -g -O3 -fdebug-prefix-map=/<<PKGBUILDDIR>>=.
-fstack-protector-strong -Wformat -Werror=format-security -Werror=implicit
-Werror=maybe-uninitialized -Werror=memset-transposed-args
-Werror=null-dereference -Werror=sizeof-array-argument
-Werror=sizeof-pointer-memaccess -c -o bsc_subscriber.o bsc_subscriber.c
bsc_subscriber.c: In function ‘bsc_subscr_find_or_create_by_tmsi’:
bsc_subscriber.c:106:13: error: potential null pointer dereference
[-Werror=null-dereference]
  bsub->tmsi = tmsi;
  ~~~~~~~~~~~^~~~~~
cc1: some warnings being treated as errors
Makefile:513: recipe for target 'bsc_subscriber.o' failed
make[4]: *** [bsc_subscriber.o] Error 1

apparently the call to bsc_subscr_alloc get inlined and then sees that bsub
might be NULL in the alloc error case.