[Boost-users] regex bug (regex_search throws bad_expression)

From: Adam Molnar (ed_at_[hidden])
Date: 2004-07-20 16:22:27

hi!

using the latest regex patch and vc7.1 i've accidentally encountered the
following:

...
 regex re("([^\n]*\\n+\\s+)+NEEDEDSUBITEM2:[^\\s]");
 bool matched =  regex_search(text, re); // bad_expression
...

i figured out those \\s -s may cause the problem.
sample text attached.

and one question:
having "DATA.*?ITEM1(ITEM2)?" and an input like "DATA ITEM1 ITEM1ITEM2"
should ITEM2 be extracted?
i think it would be good to make a note on this case in the doc.

yours,
    adam

begin 666 match_test.txt
M#0I)5$5-5%E014$Z#0H@(" @4U5"251%33$Z('AX> T*#0H@(" @3D5%1$5$
M4U5"251%33$Z(" @('AX>'@-"B @("!.145$141354))5$5-.B @("!X>'AX
M#0H-"DE414U465!%0CH-"B @("!354))5$5-,3H@>'AX#0H-"B @("!.145$
M141354))5$5-,3H@(" @>'AX> T*(" @($Y%141%1%-50DE414TR.B @("!X
'>'AX#0H-"@``
`
end