https://gcc.gnu.org/bugzilla/show_bug.cgi?id=104228
Bug ID: 104228
Summary: [9/10/11/12 Regression] ICE in df_install_ref, at
df-scan.cc:2294
Product: gcc
Version: 12.0
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 r8 :
$ cat z1.f90
program p
character(:), save, allocatable :: x(:)
call s
contains
subroutine s
associate (y => x)
y = [x]
end associate
end
end
$ cat z2.f90
program p
character(:), allocatable :: x(:)
call s
contains
subroutine s
associate (y => x)
y = [x]
end associate
end
end
$ gfortran-12-20220123 -c z1.f90 -fsanitize=address
during RTL pass: no-opt dfinit
z1.f90:3:9:
3 | call s
| ^
internal compiler error: Segmentation fault
0xe6bd5f crash_signal
../../gcc/toplev.cc:322
0x98c58f df_install_ref
../../gcc/df-scan.cc:2294
0x98c707 df_install_refs
../../gcc/df-scan.cc:2375
0x98c87e df_refs_add_to_chains
../../gcc/df-scan.cc:2429
0x994b75 df_bb_refs_record(int, bool)
../../gcc/df-scan.cc:3351
0x9951a4 df_scan_blocks()
../../gcc/df-scan.cc:588
0x97df85 rest_of_handle_df_initialize
../../gcc/df-core.cc:715
0x97df85 execute
../../gcc/df-core.cc:747
... or other backtraces
