Re: XEmacs 21.4.10 crashes with glibc 2.3.1

Sigh, it looks like support for glibc's / "Doug Lea"'s malloc wasn't properly merged in XEmacs. You really want to disable mmapped chunks _only_ for allocation of Lisp Objects, i.e. where pointers become tagged. As a workaround, I've disabled use of mmap completely in the patch below. N.B. the exact same problem should/could show up with earlier glibc releases, but maybe the allocation pattern was slightly different. If the patch below works for you, I can try to come up with something less drastic later. Regards, Wolfram. --- src/alloc.c.orig Mon Dec 17 06:49:22 2001 +++ src/alloc.c Thu Nov 7 00:27:31 2002 ＠＠ -3882,8 +3890,8 ＠＠ #ifdef DOUG_LEA_MALLOC mallopt (M_TRIM_THRESHOLD, 128*1024); /* trim threshold */ mallopt (M_MMAP_THRESHOLD, 64*1024); /* mmap threshold */ -#if 0 /* Moved to emacs.c */ - mallopt (M_MMAP_MAX, 64); /* max. number of mmap'ed areas */ +#if 1 /* Moved to emacs.c */ + mallopt (M_MMAP_MAX, 0); /* max. number of mmap'ed areas */ #endif #endif init_string_alloc (); --- src/emacs.c.orig Thu Oct 31 16:07:36 2002 +++ src/emacs.c Thu Nov 7 00:25:47 2002 ＠＠ -2713,7 +2713,8 ＠＠ if (!initialized) { #ifdef DOUG_LEA_MALLOC - mallopt (M_MMAP_MAX, 0); + if (mallopt (M_MMAP_MAX, 0) != 1) + abort(); #endif run_temacs_argc = 0; if (! SETJMP (run_temacs_catch)) ＠＠ -2770,7 +2771,8 ＠＠ defined(_NO_MALLOC_WARNING_) || \ (defined(__GLIBC__) && __GLIBC_MINOR__ < 1 && !defined(MULE)) || \ defined(DEBUG_DOUG_LEA_MALLOC) - mallopt (M_MMAP_MAX, 64); + if(mallopt (M_MMAP_MAX, 0) != 1) + abort(); #endif #ifdef REL_ALLOC r_alloc_reinit ();