stlcstrReturn
ftp://ftp.de.debian.org/debian/pool/main/r/rawtherapee/rawtherapee_5.12.orig.tar.xz
2.18.0 rawtherapee-5.12/rtengine/dcp.cc:524:17: performance: Returning the result of c_str() in a function that returns std::string is slow and redundant. [stlcstrReturn]