Maybe I had too much coffee, or not enough, but while testing a fix
for the power.f90 failures, I encountered something strange.
Compiled with "gfortran power.f90", the program correctly prints
okay, c = ( -5.000000 , 12.00000 )
z = ( 0.000000 ,-9.5367432E-07)
t = 9.5367432E-07
Compiled with -O1, the program prints:
broken, c = ( -5.000000 , 12.00000 )
z = ( 0.000000 ,-9.5367432E-07)
t = 13.00000
Removing the comment from "write (*,*) 'fix it'" allows the program to
compile correctly with -O1.
I'm assuming the write statement changes the statement sequence such
that the optimizer doesn't break the program. I've not had a chance to
investigate further, and want to be certain that this isn't some
failure of my mental capacity or a commonly-known bug. I didn't see
anything in bugzilla, but that doesn't mean it isn't there.