https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85631
--- Comment #2 from Thomas Koenig <tkoenig at gcc dot gnu.org> ---
The matmul inlining is only exposing a bug in reshape with
allocatable variables.
This also fails:
$ cat a.f90
implicit none
integer, parameter :: N=2
real, dimension(:,:), allocatable :: block_1
real, allocatable, dimension(:,:) :: var_1_mma
allocate(block_1(N,N))
block_1 = reshape([-2,3,-5,7], [2,2])
var_1_mma = transpose(block_1)
print *,var_1_mma
end program
$ gfortran -fcheck=bounds a.f90
$ ./a.out
At line 9 of file a.f90
Fortran runtime error: Array bound mismatch for dimension 1 of array
'var_1_mma' (140020497252353/2)
Error termination. Backtrace:
#0 0x400f95 in ???
#1 0x401445 in ???
#2 0x7f59b6c8d724 in ???
#3 0x4007f8 in ???
at ../sysdeps/x86_64/start.S:118
#4 0xffffffffffffffff in ???
