https://gcc.gnu.org/bugzilla/show_bug.cgi?id=99204
Bug ID: 99204
Summary: ICE in fold_read_from_constant_string, at
fold-const.c:15441
Product: gcc
Version: 11.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: fortran
Assignee: unassigned at gcc dot gnu.org
Reporter: gs...@t-online.de
Target Milestone: ---
Affects versions down to at least r5 at -O1+ :
(gives an error with integer, parameter :: ...)
$ cat z1.f90
program p
character :: c
integer :: i = -12345678
c = 'abc'(i:i)
print *, c
end
$ gfortran-11-20210221 -c z1.f90 -O2
during GIMPLE pass: ccp
z1.f90:1:9:
1 | program p
| ^
internal compiler error: Segmentation fault
0xc060ef crash_signal
../../gcc/toplev.c:327
0x945af6 poly_int<1u, long>::poly_int<char>(char const&)
../../gcc/poly-int.h:670
0x945af6 fold_read_from_constant_string(tree_node*)
../../gcc/fold-const.c:15441
0x979796 fold_const_aggregate_ref_1(tree_node*, tree_node* (*)(tree_node*))
../../gcc/gimple-fold.c:7981
0x97a9d9 fold_const_aggregate_ref(tree_node*)
../../gcc/gimple-fold.c:8136
0x97a9d9 maybe_fold_reference
../../gcc/gimple-fold.c:334
0x980f84 fold_gimple_assign
../../gcc/gimple-fold.c:366
0x980f84 fold_stmt_1
../../gcc/gimple-fold.c:6077
0xd709b3 substitute_and_fold_dom_walker::before_dom_children(basic_block_def*)
../../gcc/tree-ssa-propagate.c:1149
0x148d1b4 dom_walker::walk(basic_block_def*)
../../gcc/domwalk.c:309
0xd6fdf5 substitute_and_fold_engine::substitute_and_fold(basic_block_def*)
../../gcc/tree-ssa-propagate.c:1283
0xce231b ccp_finalize
../../gcc/tree-ssa-ccp.c:1022
0xce231b do_ssa_ccp
../../gcc/tree-ssa-ccp.c:2579
0xce231b execute
../../gcc/tree-ssa-ccp.c:2622
