Ferenc Gerlits created MINIFICPP-1239:
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Summary: Use STL regular expressions whenever we can
Key: MINIFICPP-1239
URL: https://issues.apache.org/jira/browse/MINIFICPP-1239
Project: Apache NiFi MiNiFi C++
Issue Type: Improvement
Reporter: Ferenc Gerlits
Assignee: Ferenc Gerlits
Fix For: 0.8.0
Because gcc < 4.9 has only partial and buggy support for regular expressions
(see [https://gcc.gnu.org/bugzilla/show_bug.cgi?id=53631]), we need to use the
more basic regex functions of regex.h when using those old compilers. In
RegexUtils.h, this is done using the condition
{code:c++}
#if (__cplusplus > 201103L) || defined(_WIN32)
// use STL regexes
{code}
However, this means that we only use the STL regexes on Windows, because on
Linux and MacOS we compile with {{-std=c++11}} (and not 14), so {{__cplusplus}}
is always set to {{201103}}.
Change the condition to use STL regexes by default, and only fall back to
regex.h in the case of old gcc compilers, i.e.
{code:c++}
#if defined(__GNUC__) && (__GNUC__ < 4 || (__GNUC__ == 4 && __GNUC_MINOR__ < 9))
// don't use STL regexes
{code}
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