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diff --git a/btparser/NEWS b/btparser/NEWS new file mode 100644 index 00000000..21f76d31 --- /dev/null +++ b/btparser/NEWS @@ -0,0 +1,120 @@ +== btparser 0.7 + +What's new: +- Small code cleanups +- Two tests were added + +== btparser 0.6 +Released 2010-09-23. + +Changes: +- Functions btp_frame_eq* were renamed to provide cleaner interface. +- Parameter `shallow` in functions btp_backtrace_dup, btp_thread_dup, + btp_frame_dup has been removed to simplify the interface. +- Interfaces of parser functions were modified to return + structures/NULL instead of bool. + +Bugs fixed: +- A compilation issue on 64-bit architecture with a fprintf + call using %d instead of %zd. + +See the ChangeLog file for more details. + +== btparser 0.5 +Released 2010-08-31. + +What's new: +- If the last frame has address 0x0000 and its name is '??', its + remove during backtrace normalization. This fixes rhbz#592523. + +== btparser 0.4 +Released 2010-08-30. + +What's new: +- RPM spec file has been added +- 'make rpm' and 'make srpm' works for testing purposes + +== btparser 0.3 +Released 2010-08-30. + +What's new: +- the interface documentation has been extended +- a proper README file was created +- a pkg-config metadata file support has been added +- some autotest code was added + +== btparser 0.2 +Released 2010-08-27. + +What's new: +- the API has been extensively reworked and simplified; user can call + the function btp_backtrace_quality_complex to get the quality of + the backtrace, function btp_backtrace_get_duplication_hash to get + the hash, and function btp_backtrace_get_crash_frame to get the + place where the program crashed +- location support: in the case of failure, the backtrace parser + reports line and column of the input string where the failure + occurred and a message describing what input was expected +- the command line options of the btparser utitity has been reduced + and simplified; you can now run `btparser file.bt --duplicate-hash` + to get the hash +- the normalization code was significantly improved; this results in + better backtrace hash quality + +=== Duplication hash quality +The hash quality has been significantly improved since btparser 0.1: + +./btparser-bz-improvetips: 3092 duplicates out of total 8051 +duplicates were _not_ recognized by btparser + +=== Parser precision +When compared to abrt-backtrace utility, the btparser's parser +provides better results. In a test comparing the parser results on +25685 backtraces, btparser was "better" in 726 cases. + +=== Parser speed +The btparser's parser is slightly slower than abrt-backtrace's parser. + +Measurement of how long it takes to parse 25685 backtraces: + btparser took 192.070000 seconds + abrt-backtrace took 181.230000 seconds + +== btparser 0.1 +Released 2010-06-15. + +Here is how btparser's hand-written parser became as good as +abrt-backtrace's bison parser on 2010-05-28: + +initial + -> parser quality: 1540 regressions out of 9015 + +newline allowed after function name in frame header + -> parser quality: 1391 regressions out of 9015 + +nonrecursive braces (with spaces) allowed in function name + -> parser quality: 1216 regressions out of 9015 + +recursive templates and braces, skip Python backtraces + -> parser quality: 336 regressions out of 9015 + +manually marking backtraces where the difference is caused by better +parser btparser + -> parser quality: 98 regressions out of 9015, 164 times was btparser + better + +support for operator> and similar + -> parser quality: 65 regressions out of 9015, 185 times was btparser + better + +support for type before function name and some more backtrace marking + -> parser quality: 59 regressions out of 9015, 191 times was btparser + better + +various small fixes of corner cases + -> parser quality: 0 regressions out of 9015, 241 times was btparser better + +btparser took 101.650000 seconds, abrt-backtrace took 105.260000 seconds + +=== Duplication hash quality +./btparser-bz-improvetips: 3976 duplicates out of total 7668 +duplicates were not recognized by btparser. |