+2012-12-08 Paul Eggert <eggert@cs.ucla.edu>
+
+ Use putenv+unsetenv instead of modifying environ directly (Bug#13070).
+ * alloc.c (xputenv): New function.
+ * dbusbind.c (Fdbus_init_bus):
+ * emacs.c (main):
+ * xterm.c (x_term_init):
+ Use xputenv instead of setenv or putenv, to detect memory exhaustion.
+ * editfns.c (initial_tz): Move static var decl up.
+ (tzvalbuf_in_environ): New static var.
+ (init_editfns): Initialize these two static vars.
+ (Fencode_time): Don't assume arbitrary limit on EMACS_INT width.
+ Save old TZ value on stack, if it's small.
+ (Fencode_time, set_time_zone_rule): Don't modify 'environ' directly;
+ instead, use xputenv+unsetenv to set and restore TZ.
+ (environbuf): Remove static var. All uses removed.
+ (Fset_time_zone_rule): Do not save TZ and environ;
+ no longer needed here.
+ (set_time_zone_rule_tz1, set_time_zone_rule_tz2) [LOCALTIME_CACHE]:
+ Move to inside set_time_zone_rule; they don't need file scope any more.
+ (set_time_zone_rule): Maintain the TZ=value string separately.
+ (syms_of_editfns): Don't initialize initial_tz;
+ init_editfns now does it.
+ * emacs.c (dump_tz) [HAVE_TZSET]: Now const.
+ * lisp.h (xputenv): New decl.
+
2012-12-08 Fabrice Popineau <fabrice.popineau@gmail.com>
* w32fns.c (emacs_abort): Don't do arithmetics on void pointers.