https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82511
Bug ID: 82511
Summary: ICE Bad IO basetype (12) on attempted read or write of
entire DEC structure
Product: gcc
Version: 8.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: fortran
Assignee: unassigned at gcc dot gnu.org
Reporter: James.A.Paget at aero dot org
Target Milestone: ---
Created attachment 42339
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=42339&action=edit
The program that, when compiled, illustrates the bug.
Minimal code that demonstrates the problem is in attached file bugbug.f.
Command line used to compile:
gfortran -c -Wall -Wextra -fdec-structure -save-temps bugbug.f -o bugbug.o
Output from above command line:
f951.exe: internal compiler error: Bad IO basetype (12)
libbacktrace could not find executable to open
Please submit a full bug report,
with preprocessed source if appropriate.
See <https://gcc.gnu.org/bugs/> for instructions.
Output of gcc -v:
Built by Equation Solution <http://www.Equation.com>.
Using built-in specs.
COLLECT_GCC=gcc
COLLECT_LTO_WRAPPER=c:/mingw8/bin/../libexec/gcc/x86_64-w64-
mingw32/8.0.0/lto-wrapper.exe
Target: x86_64-w64-mingw32
Configured with: ../gcc-8-20171008-mingw/configure --host=x86_64-w64-
mingw32 --build=x86_64-unknown-linux-gnu --target=x86_64-w64-mingw32 --
prefix=/home/gfortran/gcc-home/binary/mingw32/native/x86_64/gcc/8-
20171008 --with-sysroot=/home/gfortran/gcc-
home/binary/mingw32/cross/x86_64/gcc/8-20170709 --with-
gcc --with-gnu-ld --with-gnu-as --with-ld64=no --with-
gmp=/home/gfortran/gcc-home/binary/mingw32/native/x86_64/gmp --with-
mpfr=/home/gfortran/gcc-home/binary/mingw32/native/x86_64/mpfr --with-
mpc=/home/gfortran/gcc-home/binary/mingw32/native/x86_64/mpc --with-
cloog=/home/gfortran/gcc-home/binary/mingw32/native/x86_64/cloog --with-
diagnostics-color=auto-if-env --enable-cloog-backend=isl --enable-
targets=i686-w64-mingw32,x86_64-w64-mingw32 --enable-lto
--enable-languages=c,c++,fortran --enable-threads=win32 --enable-static
--enable-shared=lto-plugin --enable-plugins --enable-ld=yes
--enable-libquadmath
--enable-libquadmath-support --enable-libgomp --disable-checking
--disable-nls --disable-tls --disable-win32-registry
Thread model: win32
gcc version 8.0.0 20171008 (experimental) (GCC)
There are no preprocessor (*.i*) files generated.
System type: PC, Windows 7 Professional 64-bit running 64-bit MinGW.
This bug also occurs in gfortran 7.1.0.
The code is admittedly incorrect (I should be reading into "bucket.c16" instead
of "bucket"), but instead of an ICE I should get a diagnostic with the location
of the error.
