It dumps core in VTInitialize() if charproc.c is compiled with -O2.
The problem is in the lines 5610 to 5614 of this file, which were
added by xterm 243, but I can't see an obvious problem here.
Patch #243 - 2009/3/28
* revert change to default for allowTcapOps (request by Bram Moolenaar).
* reallocate result returned by xtermEnvLocale() to avoid reference to
freed memory after handling menuLocale resource.
* fix an old (X11R5) bug in tek4014 for switching fontsizes.
* add resource defaultString to make configurable the use of "#" when
pastes of UTF-8 text fail due to limitations in the current locale settings.
* make the set of selection target Atom's configurable by two new
resources eightBitSelectTypes and utf8SelectTypes, e.g., to use the TEXT
Atom in preference to UTF8_STRING (discussion with Stanislav Sedov
regarding koi8rxterm and the FreeBSD port).
* modify handling of TARGETS Atom by making it return exactly the set of
targets as those which xterm is currently providing.
* set MANPAGER and PAGER explicitly to /bin/cat in minstall.sh to work
around /etc/man.conf's with those variables already set (report by
Mar'yasin Semion).
* improve error-checking of tcap-query parser.
* add check for keyboard tcap), which ensures that terminal descriptions
containing the same string for shifted/unshifted keys will be seen by
tcap-query as only the unshifted key. (This would only happen with an
incorrect terminal description).
* fix conversion for input event-state to modifier-parameter which made
tcap-query feature not work with tcapFunctionKeys (keyboard type tcap).
* add "DEF_ALLOW_XXX" definitions to main.h to allow overriding the
default compiled-in values for "allowxxx" resources.
* remove check on bell-percentage added in patch #242, which disallowed
zero/negative values (Redhat Bugzilla #487829).
correct a cast in input.c, which broke translation of numeric
keypad codes to pageup, pagedown, etc., on 64-bit platform (Debian
#511138, report by Larry Doolittle).
