https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86051
Bug ID: 86051 Summary: internal compiler error: in conv_function_val, at fortran/trans-expr.c:3717 Product: gcc Version: 7.3.1 Status: UNCONFIRMED Severity: normal Priority: P3 Component: fortran Assignee: unassigned at gcc dot gnu.org Reporter: daniel.bershatsky at skolkovotech dot ru Target Milestone: --- Unfortunately, I have not succeeded in building short example that brokes compiler. So, in order to reproduce the issue one should get file located in GitHub. https://github.com/oseledets/tt-fort/blob/658ae2d9148148fb4933de2dda2434aee0b94c39/dispmodule.f90 - GNU Fortran (GCC) 7.3.1 20180406 - x86_64 GNU/Linux - GNU Fortran distributed with ArchLinux or Ubuntu 18.04 LTS $ gfortran -v Using built-in specs. COLLECT_GCC=gfortran COLLECT_LTO_WRAPPER=/usr/lib/gcc/x86_64-pc-linux-gnu/7.3.1/lto-wrapper Target: x86_64-pc-linux-gnu Configured with: /build/gcc/src/gcc/configure --prefix=/usr --libdir=/usr/lib --libexecdir=/usr/lib --mandir=/usr/share/man --infodir=/usr/share/info --with-bugurl=https://bugs.archlinux.org/ --enable-languages=c,c++,ada,fortran,go,lto,objc,obj-c++ --enable-shared --enable-threads=posix --enable-libmpx --with-system-zlib --with-isl --enable-__cxa_atexit --disable-libunwind-exceptions --enable-clocale=gnu --disable-libstdcxx-pch --disable-libssp --enable-gnu-unique-object --enable-linker-build-id --enable-lto --enable-plugin --enable-install-libiberty --with-linker-hash-style=gnu --enable-gnu-indirect-function --enable-multilib --disable-werror --enable-checking=release --enable-default-pie --enable-default-ssp Thread model: posix gcc version 7.3.1 20180406 (GCC) - With fortran source located at https://github.com/oseledets/tt-fort/blob/658ae2d9148148fb4933de2dda2434aee0b94c39/dispmodule.f90 $ gfortran -fdefault-integer-8 -ffree-line-length-none -O3 -fPIC -c dispmodule.f90 dispmodule.f90:1248:0: character(widthmax_dint(x, fmt)) :: sa(size(x)) internal compiler error: in conv_function_val, at fortran/trans-expr.c:3717 - Files generated by adding -save-temps $ cat dispmodule.s .file "dispmodule.f90"