https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85472
Bug ID: 85472
Summary: Regex match bug
Product: gcc
Version: 7.3.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: haberg-1 at telia dot com
Target Milestone: ---
Created attachment 43993
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=43993&action=edit
The regex example mentioned in the report.
In the regex "(z)((a+)?(b+)?(c))*" example at [1], also attached, applied to
the string "zaacbbbcac", g++ produces a pattern #4 match as "bbb", whereas it
says there it should be empty (the latter which clang++ does).
1. http://en.cppreference.com/w/cpp/regex/ecmascript
