maybe worth to take a look [ 8%] Building C object libmariadb/mariadb_config/CMakeFiles/mariadb_config.dir/mariadb_config.c.o /home/builduser/rpmbuild/BUILD/mariadb-10.2.10/libmariadb/mariadb_config/mariadb_config.c:9:49: warning: backslash and newline separated by space #define LIBS "-L/usr/lib64/mysql/ -lmariadb "\ [ 20%] Building C object libmariadb/libmariadb/CMakeFiles/mariadb_obj.dir/ma_dtoa.c.o /home/builduser/rpmbuild/BUILD/mariadb-10.2.10/libmariadb/libmariadb/ma_dtoa.c: In function 'dtoa': /home/builduser/rpmbuild/BUILD/mariadb-10.2.10/libmariadb/libmariadb/ma_dtoa.c:1465:14: warning: this statement may fall through [-Wimplicit-fallthrough=] leftright= 0; ~~~~~~~~~^~~ /home/builduser/rpmbuild/BUILD/mariadb-10.2.10/libmariadb/libmariadb/ma_dtoa.c:1467:3: note: here case 4: ^~~~ /home/builduser/rpmbuild/BUILD/mariadb-10.2.10/libmariadb/libmariadb/ma_dtoa.c:1473:14: warning: this statement may fall through [-Wimplicit-fallthrough=] leftright= 0; ~~~~~~~~~^~~ /home/builduser/rpmbuild/BUILD/mariadb-10.2.10/libmariadb/libmariadb/ma_dtoa.c:1475:3: note: here case 5: ^~~~ At top level: /home/builduser/rpmbuild/BUILD/mariadb-10.2.10/libmariadb/libmariadb/ma_dtoa.c:1161:21: warning: 'tinytens' defined but not used [-Wunused-const-variable=] static const double tinytens[]= ^~~~~~~~ [ 24%] Building C object strings/CMakeFiles/strings.dir/dtoa.c.o /home/builduser/rpmbuild/BUILD/mariadb-10.2.10/libmariadb/libmariadb/mariadb_dyncol.c: In function 'mariadb_dyncol_val_double': /home/builduser/rpmbuild/BUILD/mariadb-10.2.10/libmariadb/libmariadb/mariadb_dyncol.c:4049:15: warning: argument 1 null where non-null expected [-Wnonnull] *dbl= strtod(str, &end); ^~~~~~~~~~~~~~~~~ In file included from /home/builduser/rpmbuild/BUILD/mariadb-10.2.10/libmariadb/include/ma_global.h:168:0, from /home/builduser/rpmbuild/BUILD/mariadb-10.2.10/libmariadb/libmariadb/mariadb_dyncol.c:64: /usr/include/stdlib.h:126:15: note: in a call to function 'strtod' declared here extern double strtod (const char *__restrict __nptr, [ 33%] Building C object mysys/CMakeFiles/mysys.dir/my_malloc.c.o /home/builduser/rpmbuild/BUILD/mariadb-10.2.10/mysys/my_lib.c: In function 'my_dir': /home/builduser/rpmbuild/BUILD/mariadb-10.2.10/mysys/my_lib.c:144:3: warning: 'readdir_r' is deprecated [-Wdeprecated-declarations] while (!(READDIR(dirp,(struct dirent*) dirent_tmp,dp))) ^~~~~ In file included from /usr/include/features.h:410:0, from /usr/include/pthread.h:21, from /home/builduser/rpmbuild/BUILD/mariadb-10.2.10/include/my_global.h:278, from /home/builduser/rpmbuild/BUILD/mariadb-10.2.10/mysys/mysys_priv.h:19, from /home/builduser/rpmbuild/BUILD/mariadb-10.2.10/mysys/my_lib.c:19: /usr/include/dirent.h:189:12: note: declared here extern int __REDIRECT (readdir_r, [ 68%] Building C object storage/maria/CMakeFiles/aria.dir/ma_check.c.o /home/builduser/rpmbuild/BUILD/mariadb-10.2.10/storage/myisam/myisamchk.c: In function 'myisamchk': /home/builduser/rpmbuild/BUILD/mariadb-10.2.10/storage/myisam/myisamchk.c:1411:22: warning: '%ld' directive writing between 1 and 10 bytes into a region of size 8 [-Wformat-overflow=] sprintf(null_pos,"%ld",(long) keyseg->null_pos+1); ^~~ /home/builduser/rpmbuild/BUILD/mariadb-10.2.10/storage/myisam/myisamchk.c:1411:21: note: directive argument in the range [1, 4294967296] sprintf(null_pos,"%ld",(long) keyseg->null_pos+1); ^~~~~ In file included from /usr/include/stdio.h:939:0, from /home/builduser/rpmbuild/BUILD/mariadb-10.2.10/include/my_global.h:322, from /home/builduser/rpmbuild/BUILD/mariadb-10.2.10/include/my_base.h:23, from /home/builduser/rpmbuild/BUILD/mariadb-10.2.10/include/myisam.h:26, from /home/builduser/rpmbuild/BUILD/mariadb-10.2.10/storage/myisam/myisamdef.h:20, from /home/builduser/rpmbuild/BUILD/mariadb-10.2.10/storage/myisam/fulltext.h:21, from /home/builduser/rpmbuild/BUILD/mariadb-10.2.10/storage/myisam/myisamchk.c:18: /usr/include/bits/stdio2.h:33:10: note: '__builtin___sprintf_chk' output between 2 and 11 bytes into a destination of size 8 return __builtin___sprintf_chk (__s, __USE_FORTIFY_LEVEL - 1, ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ __bos (__s), __fmt, __va_arg_pack ()); ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ [ 68%] Building C object storage/maria/CMakeFiles/aria.dir/ma_preload.c.o /home/builduser/rpmbuild/BUILD/mariadb-10.2.10/storage/myisam/mi_test3.c: In function 'test_write': /home/builduser/rpmbuild/BUILD/mariadb-10.2.10/storage/myisam/mi_test3.c:367:30: warning: '%7ld' directive writing between 7 and 11 bytes into a region of size 8 [-Wformat-overflow=] sprintf((char*) record.id,"%7ld",(long) getpid()); ^~~~ /home/builduser/rpmbuild/BUILD/mariadb-10.2.10/storage/myisam/mi_test3.c:367:29: note: directive argument in the range [-2147483648, 2147483647] sprintf((char*) record.id,"%7ld",(long) getpid()); ^~~~~~ In file included from /usr/include/stdio.h:939:0, from /home/builduser/rpmbuild/BUILD/mariadb-10.2.10/include/my_global.h:322, from /home/builduser/rpmbuild/BUILD/mariadb-10.2.10/include/my_base.h:23, from /home/builduser/rpmbuild/BUILD/mariadb-10.2.10/include/myisam.h:26, from /home/builduser/rpmbuild/BUILD/mariadb-10.2.10/storage/myisam/mi_test3.c:20: /usr/include/bits/stdio2.h:33:10: note: '__builtin___sprintf_chk' output between 8 and 12 bytes into a destination of size 8 return __builtin___sprintf_chk (__s, __USE_FORTIFY_LEVEL - 1, ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ __bos (__s), __fmt, __va_arg_pack ()); ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ [ 71%] Building C object storage/maria/CMakeFiles/aria_chk.dir/maria_chk.c.o /home/builduser/rpmbuild/BUILD/mariadb-10.2.10/storage/maria/maria_chk.c: In function 'maria_chk': /home/builduser/rpmbuild/BUILD/mariadb-10.2.10/storage/maria/maria_chk.c:1703:22: warning: '%ld' directive writing between 1 and 10 bytes into a region of size 8 [-Wformat-overflow=] sprintf(null_pos,"%ld",(long) keyseg->null_pos+1); ^~~ /home/builduser/rpmbuild/BUILD/mariadb-10.2.10/storage/maria/maria_chk.c:1703:21: note: directive argument in the range [1, 4294967296] sprintf(null_pos,"%ld",(long) keyseg->null_pos+1); ^~~~~ In file included from /usr/include/stdio.h:939:0, from /home/builduser/rpmbuild/BUILD/mariadb-10.2.10/include/my_global.h:322, from /home/builduser/rpmbuild/BUILD/mariadb-10.2.10/include/my_base.h:23, from /home/builduser/rpmbuild/BUILD/mariadb-10.2.10/include/maria.h:22, from /home/builduser/rpmbuild/BUILD/mariadb-10.2.10/storage/maria/maria_def.h:18, from /home/builduser/rpmbuild/BUILD/mariadb-10.2.10/storage/maria/ma_fulltext.h:20, from /home/builduser/rpmbuild/BUILD/mariadb-10.2.10/storage/maria/maria_chk.c:18: /usr/include/bits/stdio2.h:33:10: note: '__builtin___sprintf_chk' output between 2 and 11 bytes into a destination of size 8 return __builtin___sprintf_chk (__s, __USE_FORTIFY_LEVEL - 1, ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ __bos (__s), __fmt, __va_arg_pack ()); ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ [ 73%] Building C object storage/maria/CMakeFiles/ma_test3.dir/ma_test3.c.o /home/builduser/rpmbuild/BUILD/mariadb-10.2.10/storage/maria/ma_test3.c: In function 'test_write': /home/builduser/rpmbuild/BUILD/mariadb-10.2.10/storage/maria/ma_test3.c:365:30: warning: '%7ld' directive writing between 7 and 11 bytes into a region of size 8 [-Wformat-overflow=] sprintf((char*) record.id,"%7ld", (long) getpid()); ^~~~ /home/builduser/rpmbuild/BUILD/mariadb-10.2.10/storage/maria/ma_test3.c:365:29: note: directive argument in the range [-2147483648, 2147483647] sprintf((char*) record.id,"%7ld", (long) getpid()); ^~~~~~ In file included from /usr/include/stdio.h:939:0, from /home/builduser/rpmbuild/BUILD/mariadb-10.2.10/include/my_global.h:322, from /home/builduser/rpmbuild/BUILD/mariadb-10.2.10/include/my_base.h:23, from /home/builduser/rpmbuild/BUILD/mariadb-10.2.10/include/maria.h:22, from /home/builduser/rpmbuild/BUILD/mariadb-10.2.10/storage/maria/maria_def.h:18, from /home/builduser/rpmbuild/BUILD/mariadb-10.2.10/storage/maria/ma_test3.c:20: /usr/include/bits/stdio2.h:33:10: note: '__builtin___sprintf_chk' output between 8 and 12 bytes into a destination of size 8 return __builtin___sprintf_chk (__s, __USE_FORTIFY_LEVEL - 1, ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ __bos (__s), __fmt, __va_arg_pack ()); ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~