https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65810
--- Comment #6 from Alan Modra <amodra at gmail dot com> --- It isn't seen most of the time because the failure happens only when r2 isn't 16-byte aligned (50% chance) and the r2 offset to a long double constant is n*64k+32k-8 (0.012% chance per long double). libgfortran stores paths for error messages in .rodata, so source path can affect placement of those long double constants. I'm just lucky.
