Crashes while running VM

xemacs (21.4.5) seems to reliably crash when reading vm mail with too-long a recipient list. This is on a Mac G4 running OS 10.1.2. [1] Segmentation fault xemacs -f vm [cohen2m3:~] rcohen% Fatal error (11). Unfortunately the crash produces a segmentation fault but no CORE file, so I cannot provide a backtrace. It doesn't seem to matter whether the characters are in the "To" field or the "CC" field. The incoming mail file that produces a crash has something like 4175 characters in the To: field. Cutting that number down to 4172 results in no crash. Replacing the three deleted characters with anything else on the keyboard restores the crash. uname -a: Darwin cohen2m3.llnl.gov 5.1 Darwin Kernel Version 5.1: Tue Oct 30 00:06:34 PST 2001; root:xnu/xnu-201.5.obj~1/RELEASE_PPC Power Macintosh powerpc ./configure XEmacs 21.4.5 "Civil Service" configured for `powerpc-apple-darwin5.1'. Compilation / Installation: Source code location: /usr/local/xemacs-21.4.5 Installation prefix: /usr/local Operating system description file: `s/darwin.h' Machine description file: `m/powerpc.h' Compiler: cc -g -O3 -Wall -Wno-switch -Winline -Wmissing-prototypes -Wsign-compare -Wshadow -Wpointer-arith Relocating allocator for buffers: no GNU version of malloc: no - The GNU allocators don't work with this system configuration. Window System: Compiling in support for the X window system: - X Windows headers location: /usr/X11R6/include - X Windows libraries location: /usr/X11R6/lib - Handling WM_COMMAND properly. Using Lucid menubars. Using Lucid scrollbars. TTY: Images: Compiling in support for GIF images (builtin). Compiling in support for XPM images. WARNING: ----------------------------------------------------------- WARNING: Compiling without PNG image support. WARNING: You should strongly consider installing the PNG libraries. WARNING: Otherwise certain images and glyphs may not display. WARNING: (a copy may be found in ftp://ftp.xemacs.org/pub/xemacs/aux) WARNING: ----------------------------------------------------------- Sound: Databases: Compiling in support for DBM. Internationalization: Mail: Compiling in support for "dot-locking" mail spool file locking method. Other Features: Using the new portable dumper.