Internal Compiler Error GCC in GEMM

[crtrott]

/mnt/netapp/OHPC_home/crtrott/TrilinosBuild/White/Integration/Cuda-Kokkos-Kernels/trilinos-update/packages/kokkos-kernels/unit_test/blas/Test_Blas3_gemm.hpp:47:11: internal compiler error: in tsubst_copy, at cp/pt.c:13039
         C(i,j) = beta*C(i,j) + alpha*C_ij;
           ^
0x101fe577 tsubst_copy
	../.././gcc/cp/pt.c:13039
0x101ebd03 tsubst_copy_and_build(tree_node*, tree_node*, int, tree_node*, bool, bool)
	../.././gcc/cp/pt.c:15795
0x101eca5b tsubst_copy_and_build(tree_node*, tree_node*, int, tree_node*, bool, bool)
	../.././gcc/cp/pt.c:14823
0x101ec433 tsubst_copy_and_build(tree_node*, tree_node*, int, tree_node*, bool, bool)
	../.././gcc/cp/pt.c:15576
0x101ed62f tsubst_copy_and_build(tree_node*, tree_node*, int, tree_node*, bool, bool)
	../.././gcc/cp/pt.c:15273
0x101f5d43 tsubst_expr
	../.././gcc/cp/pt.c:14604
0x101f6d23 tsubst_init
	../.././gcc/cp/pt.c:12988
0x101fe687 tsubst_copy
	../.././gcc/cp/pt.c:13177
0x101ebd03 tsubst_copy_and_build(tree_node*, tree_node*, int, tree_node*, bool, bool)
	../.././gcc/cp/pt.c:15795
0x101ec747 tsubst_copy_and_build(tree_node*, tree_node*, int, tree_node*, bool, bool)
	../.././gcc/cp/pt.c:15286
0x101ecc3f tsubst_copy_and_build(tree_node*, tree_node*, int, tree_node*, bool, bool)
	../.././gcc/cp/pt.c:15119
0x101f5d43 tsubst_expr
	../.././gcc/cp/pt.c:14604
0x101f4d97 tsubst_expr
	../.././gcc/cp/pt.c:14015
0x101f55f7 tsubst_expr
	../.././gcc/cp/pt.c:14001
0x101f5d03 tsubst_expr
	../.././gcc/cp/pt.c:14187
0x101f55f7 tsubst_expr
	../.././gcc/cp/pt.c:14001
0x101f5d03 tsubst_expr
	../.././gcc/cp/pt.c:14187
0x101f3f1f instantiate_decl(tree_node*, int, bool)
	../.././gcc/cp/pt.c:20670
0x1020cb27 instantiate_class_template_1
	../.././gcc/cp/pt.c:9725
0x1020cb27 instantiate_class_template(tree_node*)
	../.././gcc/cp/pt.c:9793

Issue in 5.x and 6.x may get fixed in 6.9, putting a workaround in.