https://gcc.gnu.org/bugzilla/show_bug.cgi?id=69870
Bug ID: 69870
Summary: ICE while detecting undeclared parameter
Product: gcc
Version: 6.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: fortran
Assignee: unassigned at gcc dot gnu.org
Reporter: jwmwalrus at gmail dot com
Target Milestone: ---
Hi.
The (invalid) code below throws an ICE with both gfortran 5 and 6.
-----
module somemod
implicit none
contains
subroutine output()
character(STRING_TEXT) :: msg
end subroutine
end module somemod
-----
With gfortran 5 I get:
~$ gfortran-5 -c somemod.f90
somemod.f90:4:0:
subroutine output()
1
internal compiler error: in gfc_typenode_for_spec, at
fortran/trans-types.c:1084
0x683cc8 gfc_typenode_for_spec(gfc_typespec*)
../../src/gcc/fortran/trans-types.c:1084
0x683cc8 gfc_sym_type(gfc_symbol*)
../../src/gcc/fortran/trans-types.c:2170
0xd4f548 gfc_get_symbol_decl(gfc_symbol*)
../../src/gcc/fortran/trans-decl.c:1511
0xd4e482 generate_local_decl
../../src/gcc/fortran/trans-decl.c:5055
0x64bce2 expr_decls
../../src/gcc/fortran/trans-decl.c:5003
0x5c4294 gfc_traverse_expr(gfc_expr*, gfc_symbol*, bool (*)(gfc_expr*,
gfc_symbol*, int*), int)
../../src/gcc/fortran/expr.c:4161
0x645a0b generate_expr_decls
../../src/gcc/fortran/trans-decl.c:5010
0x645a0b generate_dependency_declarations
../../src/gcc/fortran/trans-decl.c:5025
0x645a0b generate_local_decl
../../src/gcc/fortran/trans-decl.c:5052
0xd4405e do_traverse_symtree
../../src/gcc/fortran/symbol.c:3646
0xd4ce0b generate_local_vars
../../src/gcc/fortran/trans-decl.c:5245
0xd4ce0b gfc_generate_function_code(gfc_namespace*)
../../src/gcc/fortran/trans-decl.c:5781
0x62dd77 gfc_generate_module_code(gfc_namespace*)
../../src/gcc/fortran/trans.c:2072
0xd2afea translate_all_program_units
../../src/gcc/fortran/parse.c:5330
0xd2afea gfc_parse_file()
../../src/gcc/fortran/parse.c:5540
0x11e9fa5 gfc_be_parse_file
../../src/gcc/fortran/f95-lang.c:229
Please submit a full bug report,
with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.
See <file:///usr/share/doc/gcc-5/README.Bugs> for instructions.
With gfortran 6 I get:
~$ gfortran-6 -c somemod.f90
somemod.f90:4:0:
subroutine output()
internal compiler error: in gfc_typenode_for_spec, at
fortran/trans-types.c:1064
Please submit a full bug report,
with preprocessed source if appropriate.
See <file:///usr/share/doc/gcc-snapshot/README.Bugs> for instructions.
Ironically, removing the "implicit none" line shows the actual issue ---since
STRING_TEXT becomes an implicitly REAL parameter/expression.
System and compiler information follows:
~$ lsb_release -rd && gfortran-5 -v && gfortran-6 -v
Description: Debian GNU/Linux testing-updates (sid)
Release: testing-updates
Using built-in specs.
COLLECT_GCC=gfortran-5
COLLECT_LTO_WRAPPER=/usr/lib/gcc/x86_64-linux-gnu/5/lto-wrapper
Target: x86_64-linux-gnu
Configured with: ../src/configure -v --with-pkgversion='Debian 5.3.1-8'
--with-bugurl=file:///usr/share/doc/gcc-5/README.Bugs
--enable-languages=c,ada,c++,java,go,d,fortran,objc,obj-c++ --prefix=/usr
--program-suffix=-5 --enable-shared --enable-linker-build-id
--libexecdir=/usr/lib --without-included-gettext --enable-threads=posix
--libdir=/usr/lib --enable-nls --with-sysroot=/ --enable-clocale=gnu
--enable-libstdcxx-debug --enable-libstdcxx-time=yes
--with-default-libstdcxx-abi=new --enable-gnu-unique-object
--disable-vtable-verify --enable-libmpx --enable-plugin --with-system-zlib
--disable-browser-plugin --enable-java-awt=gtk --enable-gtk-cairo
--with-java-home=/usr/lib/jvm/java-1.5.0-gcj-5-amd64/jre --enable-java-home
--with-jvm-root-dir=/usr/lib/jvm/java-1.5.0-gcj-5-amd64
--with-jvm-jar-dir=/usr/lib/jvm-exports/java-1.5.0-gcj-5-amd64
--with-arch-directory=amd64 --with-ecj-jar=/usr/share/java/eclipse-ecj.jar
--enable-objc-gc --enable-multiarch --with-arch-32=i586 --with-abi=m64
--with-multilib-list=m32,m64,mx32 --enable-multilib --with-tune=generic
--enable-checking=release --build=x86_64-linux-gnu --host=x86_64-linux-gnu
--target=x86_64-linux-gnu
Thread model: posix
gcc version 5.3.1 20160205 (Debian 5.3.1-8)
Using built-in specs.
COLLECT_GCC=gfortran-6
COLLECT_LTO_WRAPPER=/usr/lib/gcc-snapshot/libexec/gcc/x86_64-linux-gnu/6.0.0/lto-wrapper
Target: x86_64-linux-gnu
Configured with: ../src/configure -v --with-pkgversion='Debian 20160125-1'
--with-bugurl=file:///usr/share/doc/gcc-snapshot/README.Bugs
--enable-languages=c,ada,c++,java,go,fortran,objc,obj-c++
--prefix=/usr/lib/gcc-snapshot --enable-shared --enable-linker-build-id
--disable-nls --with-sysroot=/ --enable-clocale=gnu --enable-libstdcxx-debug
--enable-libstdcxx-time=yes --with-default-libstdcxx-abi=new
--enable-gnu-unique-object --disable-vtable-verify --enable-libmpx
--enable-plugin --with-system-zlib --disable-browser-plugin
--enable-java-awt=gtk --enable-gtk-cairo
--with-java-home=/usr/lib/jvm/java-1.5.0-gcj-6-snap-amd64/jre
--enable-java-home --with-jvm-root-dir=/usr/lib/jvm/java-1.5.0-gcj-6-snap-amd64
--with-jvm-jar-dir=/usr/lib/jvm-exports/java-1.5.0-gcj-6-snap-amd64
--with-arch-directory=amd64 --with-ecj-jar=/usr/share/java/eclipse-ecj.jar
--enable-objc-gc --enable-multiarch --with-arch-32=i586 --with-abi=m64
--with-multilib-list=m32,m64,mx32 --enable-multilib --with-tune=generic
--disable-werror --enable-checking=yes --build=x86_64-linux-gnu
--host=x86_64-linux-gnu --target=x86_64-linux-gnu
Thread model: posix
gcc version 6.0.0 20160125 (experimental) [trunk revision 232803] (Debian
20160125-1)
