https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83900
--- Comment #10 from Steve Kargl <sgk at troutmask dot apl.washington.edu> --- On Sat, Jan 20, 2018 at 03:22:50PM +0000, dominiq at lps dot ens.fr wrote: > https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83900 > > --- Comment #9 from Dominique d'Humieres <dominiq at lps dot ens.fr> --- > The original test in comment 0 still fails at r256917 on darwin with > > pr83900.f90:4:0: > > print *, matmul(a, b) > > internal compiler error: in fold_convert_loc, at fold-const.c:2402 > > Should I reopen this PR or open a new one? > Interesting. gfortran.dg/matmul_17.f90 is essentially the code in comment #0 without the IO statement. The backtrace in comment #0 is caused by the assert() I removed, which is bogus. I think a new PR is needed. It seems matmul is hosed integer, parameter :: a(3,2) = 1 real, parameter :: b(2,3) = 2 real, parameter :: c(3,3) = matmul(a,b) real d(3,3) d = matmul(a,b) print '(9F5.1)', c print '(9F5.1)', d % gfcx -o z -fno-frontend-optimize a.f90 % ./z 4.0 4.0 4.0 4.0 4.0 4.0 4.0 4.0 4.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 -fno-frontend-optimize is not needed to get the above.
