https://gcc.gnu.org/bugzilla/show_bug.cgi?id=44511
eggert at cs dot ucla.edu changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |eggert at cs dot ucla.edu --- Comment #4 from eggert at cs dot ucla.edu --- We recently ran into this bug in Gnulib, and this affects downstream GNU test programs with threads that never return, because POSIX thread functions return 'void *'. For example, with GNU grep 3.6, './configure --enable-gcc-warnings; make' fails to build; see: https://bugs.gnu.org/44535 I worked around the problem by adding '#pragma GCC diagnostic ignored "-Wreturn-type"' to the Gnulib test module in question. It would be nice if such a workaround weren't needed.