https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84394
Bug ID: 84394
Summary: compiler error when using modules with derived types
in block data subprograms
Product: gcc
Version: 8.0.1
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: fortran
Assignee: unassigned at gcc dot gnu.org
Reporter: csolomon at lanl dot gov
Target Milestone: ---
Created attachment 43418
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=43418&action=edit
Simplified reproducer of the error.
Configuration info:
gfortran -v
Using built-in specs.
COLLECT_GCC=/opt/local/codes/mcnp/csolomon/gcc-8-20180211-install/bin/gfortran
COLLECT_LTO_WRAPPER=/opt/local/codes/mcnp/csolomon/gcc-8-20180211-install/libexec/gcc/x86_64-pc-linux-gnu/8.0.1/lto-wrapper
Target: x86_64-pc-linux-gnu
Configured with: ../configure --prefix
/opt/local/codes/mcnp/csolomon/gcc-8-20180211-install
Thread model: posix
gcc version 8.0.1 20180211 (experimental) (GCC)
Problem info:
When compiling a block data subprogram that uses a module containing a derived
type the error below is obtained. An error (without as much detail) also
occurs with GCC 7.3.0, but does not occur with GCC 6.4.0. A simplified
reproducer is attached.
gfortran -Wall -Wextra block_data_bug.f90 -o test
in gfc_format_decoder, at fortran/error.c:943
0x597156 gfc_format_decoder
../../gcc/fortran/error.c:943
0x1583bf7 pp_format(pretty_printer*, text_info*)
../../gcc/pretty-print.c:1375
0x1574307 diagnostic_report_diagnostic(diagnostic_context*, diagnostic_info*)
../../gcc/diagnostic.c:984
0x76c2ba gfc_error_opt
../../gcc/fortran/error.c:1308
0x76d7b0 gfc_error(char const*, ...)
../../gcc/fortran/error.c:1337
0x7f911f check_conflict
../../gcc/fortran/symbol.c:485
0x7dbb3a resolve_component
../../gcc/fortran/resolve.c:13642
0x7dc29a resolve_fl_derived0
../../gcc/fortran/resolve.c:14018
0x7dc867 resolve_fl_derived0
../../gcc/fortran/resolve.c:14162
0x7dc867 resolve_fl_derived
../../gcc/fortran/resolve.c:14140
0x7d9127 resolve_symbol
../../gcc/fortran/resolve.c:14514
0x7fa612 do_traverse_symtree
../../gcc/fortran/symbol.c:4157
0x7d3123 resolve_types
../../gcc/fortran/resolve.c:16415
0x7d819c gfc_resolve(gfc_namespace*)
../../gcc/fortran/resolve.c:16529
0x7c5fa6 gfc_parse_file()
../../gcc/fortran/parse.c:6262
0x80c6df gfc_be_parse_file
../../gcc/fortran/f95-lang.c:204
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.
