https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90329
--- Comment #20 from Tomas Kalibera <tomas.kalibera at gmail dot com> --- (In reply to rguent...@suse.de from comment #19) > I don't see how -fno-optimize-sibling-calls helps in a systematic way. > It might obfuscate a specific example enough to make it work, but...? There is only empirical data, but more than one case. I've debugged only one case, but all the other R packages that were newly failing with that gfortran change also started working again with -fno-optimize-sibling-calls (~15 CRAN packages). That -fno-optimize-sibling-calls helps has also been confirmed by Kurt Hornik from the CRAN team.
