https://gcc.gnu.org/bugzilla/show_bug.cgi?id=91237
Bug ID: 91237
Summary: ICE in gfortran with preprocessor directives
Product: gcc
Version: 9.1.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: fortran
Assignee: unassigned at gcc dot gnu.org
Reporter: Melven.Roehrig-Zoellner at DLR dot de
Target Milestone: ---
I obtain a strange ICE for a very minimalistic piece of preprocessing
directives with gfortran (at least versions 4.8.5, 5.4.0, 8.1.0, 9.1.0 fail,
some tested on Ubuntu 16.04 and some on a SLED system):
Steps to reproduce:
> cat example.F90
#ifndef ELEM
# define ELEM 'Z'
#endif
#if ELEM == 'D'
# define ELEM_TYPE real(kind=DT_ELEM_KIND)
#elif ELEM == 'Z'
# define ELEM_TYPE complex(kind=ZT_ELEM_KIND)
#endif
> gfortran --version
GNU Fortran (GCC) 9.1.0
Copyright (C) 2019 Free Software Foundation, Inc.
This is free software; see the source for copying conditions. There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
> gfortran -c example.F90
<built-in>: internal compiler error: Segmentation fault
0xb0e154 crash_signal
/tools/modulesystem/tools/gcc/gcc-9.1.0/src/gcc/toplev.c:326
Please submit a full bug report,
with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.
See <https://gcc.gnu.org/bugs/> for instructions.
