https://gcc.gnu.org/bugzilla/show_bug.cgi?id=116530
Bug ID: 116530
Summary: ICE with member of namelist renamed by use module
Product: gcc
Version: 14.2.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: fortran
Assignee: unassigned at gcc dot gnu.org
Reporter: philippe.wautelet at cnrs dot fr
Target Milestone: ---
Hello,
The following code triggers an internal compiler error with gfortran 14.1.0 and
14.2.0:
> cat ice_nml_profilern.f90
module mod_nml1
logical :: ldiag
namelist /nam_nml1/ldiag
end module mod_nml1
module mod_nml2
logical :: ldiag
namelist /nam_nml2/ldiag
end module mod_nml2
module mod_interm
use mod_nml1
end module mod_interm
program ice_nml
use mod_nml1, ldiag_nml1 => ldiag
use mod_nml2, ldiag_nml2 => ldiag
use mod_interm
integer :: ilu
read(unit=ilu,nml=nam_nml1)
end program ice_nml
> gfortran ice_nml_profilern.f90
ice_nml_profilern.f90:24:29:
24 | read(unit=ilu,nml=nam_nml1)
| 1
internal compiler error: Segmentation fault
0xe10cdf crash_signal
../../gcc-14.2.0-srcdir/gcc/toplev.cc:319
0x893878 gfc_build_cstring_const(char const*)
../../gcc-14.2.0-srcdir/gcc/fortran/trans-const.cc:124
0x8de9eb transfer_namelist_element
../../gcc-14.2.0-srcdir/gcc/fortran/trans-io.cc:1696
0x8e0792 build_dt
../../gcc-14.2.0-srcdir/gcc/fortran/trans-io.cc:2012
0x872b87 trans_code
../../gcc-14.2.0-srcdir/gcc/fortran/trans.cc:2551
0x8a38b4 gfc_generate_function_code(gfc_namespace*)
../../gcc-14.2.0-srcdir/gcc/fortran/trans-decl.cc:7880
0x813e26 translate_all_program_units
../../gcc-14.2.0-srcdir/gcc/fortran/parse.cc:7099
0x813e26 gfc_parse_file()
../../gcc-14.2.0-srcdir/gcc/fortran/parse.cc:7413
0x86fc0f gfc_be_parse_file
../../gcc-14.2.0-srcdir/gcc/fortran/f95-lang.cc:241
I'm not sure it is conforming to the Fortran standard but it shouldn't trigger
an ICE.
I think it could be related to the fix for bug 105847.
This code compiles successfully with versions prior to 14.
