On 05/01/2018 12:58, Christer Solskogen wrote: > I'm not sure why the developer chose -Ofast. It was not my decision. When the dust settles, I think he should "revert" to -O3, or even to -O2. > ==7821== Conditional jump or move depends on uninitialised value(s) > ==7821== at 0x29478C: read_kickstart (memory.cpp:581) > ==7821== by 0x29478C: read_kickstart_version(uae_prefs*) (memory.cpp:1151) > ==7821== by 0x28E243: fixup_prefs(uae_prefs*, bool) (main.cpp:195) > ==7821== by 0x1AB34F: cfgfile_load(uae_prefs*, char const*, int*, int, int) (cfgfile.cpp:3969) > ==7821== by 0x2F593B: target_cfgfile_load(uae_prefs*, char const*, int, int) (amiberry.cpp:527) > ==7821== by 0x28F927: parse_cmdline_and_init_file (main.cpp:608) > ==7821== by 0x28F927: real_main2 (main.cpp:686) > ==7821== by 0x28F927: real_main(int, char**) (main.cpp:784) > ==7821== by 0x151D97: main (amiberry.cpp:920) > ==7821== > ==7821== Conditional jump or move depends on uninitialised value(s) > ==7821== at 0x29479C: read_kickstart (memory.cpp:584) > ==7821== by 0x29479C: read_kickstart_version(uae_prefs*) (memory.cpp:1151) > ==7821== by 0x28E243: fixup_prefs(uae_prefs*, bool) (main.cpp:195) > ==7821== by 0x1AB34F: cfgfile_load(uae_prefs*, char const*, int*, int, int) (cfgfile.cpp:3969) > ==7821== by 0x2F593B: target_cfgfile_load(uae_prefs*, char const*, int, int) (amiberry.cpp:527) > ==7821== by 0x28F927: parse_cmdline_and_init_file (main.cpp:608) > ==7821== by 0x28F927: real_main2 (main.cpp:686) > ==7821== by 0x28F927: real_main(int, char**) (main.cpp:784) > ==7821== by 0x151D97: main (amiberry.cpp:920) > ==7821== > ==7821== Invalid read of size 4 > ==7821== at 0x28E2AC: fixup_prefs(uae_prefs*, bool) (main.cpp:207) > ==7821== by 0x1AB34F: cfgfile_load(uae_prefs*, char const*, int*, int, int) (cfgfile.cpp:3969) > ==7821== by 0x2F593B: target_cfgfile_load(uae_prefs*, char const*, int, int) (amiberry.cpp:527) > ==7821== by 0x28F927: parse_cmdline_and_init_file (main.cpp:608) > ==7821== by 0x28F927: real_main2 (main.cpp:686) > ==7821== by 0x28F927: real_main(int, char**) (main.cpp:784) > ==7821== by 0x151D97: main (amiberry.cpp:920) > ==7821== Address 0x29bb8 is not stack'd, malloc'd or (recently) free'd I just don't see read_kickstart_version() anywhere in the source code. Are you using https://github.com/midwan/amiberry.git ? Precisely what commit are you using => b791d1d0acb7? 97f180ec9fef? other? What do you have at main.cpp:line195 and memory.cpp:line1151 ? What about memory.cpp:line581 and memory.cpp:line584 ? I don't see anything relevant there. I'm starting to think I'm not looking at the correct source code :-) I don't think O3 messes line numbering that bad. Regards.