https://gcc.gnu.org/bugzilla/show_bug.cgi?id=70869
--- Comment #3 from Markus Trippelsdorf <trippels at gcc dot gnu.org> ---
(gdb) bt
#0 gimplify_expr (expr_p=expr_p@entry=0x7ffffbfff148,
pre_p=pre_p@entry=0x7fffffffd7d0, post_p=0x0,
gimple_test_f=gimple_test_f@entry=0xada690
<is_gimple_reg_rhs_or_call(tree)>, fallback=fallback@entry=1) at
../../gcc/gcc/gimplify.c:10101
#1 0x0000000000ae46bd in internal_get_tmp_var (val=<optimized out>,
pre_p=0x7fffffffd7d0, post_p=<optimized out>, is_formal=<optimized out>) at
../../gcc/gcc/gimplify.c:557
#2 0x0000000000aead45 in gimplify_expr (expr_p=expr_p@entry=0x7ffff6594368,
pre_p=pre_p@entry=0x7fffffffd7d0, post_p=post_p@entry=0x7ffffbfff410,
gimple_test_f=<optimized out>,
fallback=fallback@entry=1) at ../../gcc/gcc/gimplify.c:11223
#3 0x0000000000afe7d3 in gimplify_modify_expr
(expr_p=expr_p@entry=0x7ffffbfff570, pre_p=pre_p@entry=0x7fffffffd7d0,
post_p=post_p@entry=0x7ffffbfff410,
want_value=<optimized out>) at ../../gcc/gcc/gimplify.c:4725
#4 0x0000000000aec56e in gimplify_expr (expr_p=0x7ffffbfff570,
pre_p=pre_p@entry=0x7fffffffd7d0, post_p=0x7ffffbfff410, post_p@entry=0x0,
gimple_test_f=gimple_test_f@entry=0xadd070 <is_gimple_stmt(tree)>,
fallback=fallback@entry=0) at ../../gcc/gcc/gimplify.c:10287
#5 0x0000000000af0197 in gimplify_stmt (stmt_p=stmt_p@entry=0x7ffffbfff570,
seq_p=seq_p@entry=0x7fffffffd7d0) at ../../gcc/gcc/gimplify.c:5688
#6 0x0000000000ae47e3 in gimplify_and_add (seq_p=0x7fffffffd7d0, t=<optimized
out>) at ../../gcc/gcc/gimplify.c:425
#7 internal_get_tmp_var (val=<optimized out>, pre_p=0x7fffffffd7d0,
post_p=<optimized out>, is_formal=<optimized out>) at
../../gcc/gcc/gimplify.c:570
#8 0x0000000000aead45 in gimplify_expr (expr_p=expr_p@entry=0x7ffff6594340,
pre_p=pre_p@entry=0x7fffffffd7d0, post_p=post_p@entry=0x7ffffbfff820,
gimple_test_f=<optimized out>,
fallback=fallback@entry=1) at ../../gcc/gcc/gimplify.c:11223
#9 0x0000000000afe7d3 in gimplify_modify_expr
(expr_p=expr_p@entry=0x7ffffbfff980, pre_p=pre_p@entry=0x7fffffffd7d0,
post_p=post_p@entry=0x7ffffbfff820,
want_value=<optimized out>) at ../../gcc/gcc/gimplify.c:4725
#10 0x0000000000aec56e in gimplify_expr (expr_p=0x7ffffbfff980,
pre_p=pre_p@entry=0x7fffffffd7d0, post_p=0x7ffffbfff820, post_p@entry=0x0,
gimple_test_f=gimple_test_f@entry=0xadd070 <is_gimple_stmt(tree)>,
fallback=fallback@entry=0) at ../../gcc/gcc/gimplify.c:10287
#11 0x0000000000af0197 in gimplify_stmt (stmt_p=stmt_p@entry=0x7ffffbfff980,
seq_p=seq_p@entry=0x7fffffffd7d0) at ../../gcc/gcc/gimplify.c:5688
#12 0x0000000000ae47e3 in gimplify_and_add (seq_p=0x7fffffffd7d0, t=<optimized
out>) at ../../gcc/gcc/gimplify.c:425
#13 internal_get_tmp_var (val=<optimized out>, pre_p=0x7fffffffd7d0,
post_p=<optimized out>, is_formal=<optimized out>) at
../../gcc/gcc/gimplify.c:570
#14 0x0000000000aead45 in gimplify_expr (expr_p=expr_p@entry=0x7ffff6594318,
pre_p=pre_p@entry=0x7fffffffd7d0, post_p=post_p@entry=0x7ffffbfffc30,
gimple_test_f=<optimized out>,
fallback=fallback@entry=1) at ../../gcc/gcc/gimplify.c:11223
#15 0x0000000000afe7d3 in gimplify_modify_expr
(expr_p=expr_p@entry=0x7ffffbfffd90, pre_p=pre_p@entry=0x7fffffffd7d0,
post_p=post_p@entry=0x7ffffbfffc30,
want_value=<optimized out>) at ../../gcc/gcc/gimplify.c:4725
...
