https://gcc.gnu.org/bugzilla/show_bug.cgi?id=55813
Kyle J Strand <kyle.strand at beckman dot com> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |kyle.strand at beckman dot com --- Comment #4 from Kyle J Strand <kyle.strand at beckman dot com> --- The behavior (even as of 5.1) still seems at odds with the documentation. In particular, classes with *public* constructors *can* trigger this warning. See http://stackoverflow.com/q/33157248/1858225 for discussion and sample code.