Eli Zaretskii writes: >> From: Rainer M Krug >> Cc: 21428@debbugs.gnu.org, mituharu+bug-gnu-emacs-mac@math.s.chiba-u.ac.jp >> Date: Thu, 01 Oct 2015 10:21:04 +0200 >> >> OK - it seems not to continue after some time after the breakpoint at >> line 4199. >> >> Attached are the log and the script I used. >> >> I'll leave the session open. >> >> This seems to be triggered by something else - I manually entered "c" >> but it just gave me this output (also at the end of the log): >> >> ,---- >> | (gdb) c >> | Continuing. >> | >> | Program received signal EXC_BAD_ACCESS, Could not access memory. >> | Reason: KERN_INVALID_ADDRESS at address: 0x00000000016519e0 >> | free_realized_faces (c=0x1016519c0) at xfaces.c:4199 >> | 4199 c->used = 0; >> | (gdb) p c->used >> | $502 = 26 >> | (gdb) >> `---- > > This is strange: the problematic address, 0x00000000016519e0, is the > address of the cache (0x1016519c0) with the 33rd bit reset. Are you > sure you don't have some hardware problem on that machine? > > Or maybe it's a GDB bug? Or even some kernel bug? I somehow have the feeling that it could be a kernel bug, as I have other strange things happening as well which also could be caused by a kernel bug. As I am planing to upgrade to El Capitan today or tomorrow, I will wait with further test until then and let you know. Another pointer towards the kernel: the error only occurred after a holiday, which resulted in the upgrade of the OS, emacs, packages, ... So I could not pinpoint what caused it. > > I don't really understand what this means. I can only suggest to run > another session with the same commands, and see if it fails in the > same way. This was already the third session, as it also did not make sense to me. Also: continued "continue" resulted in exactly the same error message and no continuation. OK - I will then upgrade and report back in a few days time to see if the upgrade solved the problem. If it was kernel, I am really sorry for your wasted time, I will report back then, Thanks a lot, Rainer > > Thanks. -- Rainer M. Krug, PhD (Conservation Ecology, SUN), MSc (Conservation Biology, UCT), Dipl. Phys. (Germany) Centre of Excellence for Invasion Biology Stellenbosch University South Africa Tel : +33 - (0)9 53 10 27 44 Cell: +33 - (0)6 85 62 59 98 Fax : +33 - (0)9 58 10 27 44 Fax (D): +49 - (0)3 21 21 25 22 44 email: Rainer@krugs.de Skype: RMkrug PGP: 0x0F52F982