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* fix signedness error handling invalid multibyte sequences in regexecRich Felker2012-04-141-2/+2
| | | | | | | the "< 0" test was always false due to use of an unsigned type. this resulted in infinite loops on 32-bit machines (adding -1U to a pointer is the same as adding -1) and crashes on 64-bit machines (offsetting the string pointer by 4gb-1b when an illegal sequence was hit).
* upgrade to latest upstream TRE regex code (0.8.0)Rich Felker2012-03-201-241/+145
| | | | | | | | | | | | | | | | | | | the main practical results of this change are 1. the regex code is no longer subject to LGPL; it's now 2-clause BSD 2. most (all?) popular nonstandard regex extensions are supported I hesitate to call this a "sync" since both the old and new code are heavily modified. in one sense, the old code was "more severely" modified, in that it was actively hostile to non-strictly-conforming expressions. on the other hand, the new code has eliminated the useless translation of the entire regex string to wchar_t prior to compiling, and now only converts multibyte character literals as needed. in the future i may use this modified TRE as a basis for writing the long-planned new regex engine that will avoid multibyte-to-wide character conversion entirely by compiling multibyte bracket expressions specific to UTF-8.
* fix bug in TRE found by clang (typo && instead of &)Rich Felker2011-04-071-1/+1
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* initial check-in, version 0.5.0 v0.5.0Rich Felker2011-02-121-0/+1107