* generic/tclInterp.c (Tcl_GetAlias): fix for [Bug 1882373]
* generic/regguts.h, generic/regc_color.c, generic/regc_nfa.c:
Fixes for problems created when processing regular expressions that
generate very large automata. An enormous number of thanks to Will
Drewry <wad@google.com>, Tavis Ormandy <taviso@google.com>, and Tom
Lane <tgl@sss.pgh.pa.us> from the Postgresql crowd for their help in
tracking these problems down. [Bug 1810264]
* unix/tclUnixCompat.c (TclpGetHostByName): Really applied
the change noted on 2007-11-13 by dkf below.
* generic/tclIOUtil.c (TclGetOpenMode): Only set the O_APPEND flag
* tests/ioUtil.test (ioUtil-4.1): on a channel for the 'a'
mode and not for 'a+'. [Bug 1773127] (backport from HEAD)
* generic/tclCmdIL.c (Tcl_LsearchObjCmd): Prevent shimmering crash
when -exact and -integer/-real are mixed. [Bug 1844789]
* generic/tclThread.c: Back-port locking changes from Tcl8.5
in Tcl_Mutex/ConditionFinlize. Now we properly master-lock
the finalization of sync primitives.
* generic/regc_nfa.c: Fixed infinite loop in the regexp compiler
* generic/regcomp.c: [Bug 1810038]. Corrected looping logic in
* tests/regexp.test: fixempties() to avoid wasting time walking a
list of dead states [Bug 1832612]. Convert optst() from expensive
no-op to a cheap no-op. Improve newline usage in debug output.
* unix/tclUnixCompat.c (TclpGetHostByName): The six-argument form of
getaddressbyname_r() uses the fifth argument to indicate whether the
lookup succeeded or not on at least one platform. [Bug 1618235]
* generic/regc_lex.c (lexescape): Ensure that backreference numbers
can't overflow a signed int in a way that breaks things. [Bug 1810264]
* generic/tclParse.c (Tcl_ParseBraces): fix for possible read
after the end of buffer, [Bug 1813528] (Joe Mistachkin).
* generic/tclObj.c (Tcl_FindCommandFromObj): fix finding a deleted
command; cannot trigger this from Tcl itself, but crash reported
on xotcl. This check is new to 8.4 but exists in 8.5, so this is a
backport or something. Thanks Gustaf Neumann.
* generic/tcl.h (Tcl_DecrRefCount): Update change from 2006-05-29
to make macro more warning-robust in unbraced if code.
6e4b815dbd