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Fortran 2003 supports type extension. This patch allows access to inherited members by using their fully qualified name as described in the Fortran standard. In doing so the patch also fixes a bug in GDB when trying to access the members of a base class in a derived class via the derived class' base class member. This patch fixes PR22497 and PR26373 on GDB side. Using the example Fortran program from PR22497 program mvce implicit none type :: my_type integer :: my_int end type my_type type, extends(my_type) :: extended_type end type extended_type type(my_type) :: foo type(extended_type) :: bar foo%my_int = 0 bar%my_int = 1 print*, foo, bar end program mvce and running this with GDB and setting a BP at 17: Before: (gdb) p bar%my_type A syntax error in expression, near `my_type'. (gdb) p bar%my_int There is no member named my_int. (gdb) p bar%my_type%my_int A syntax error in expression, near `my_type%my_int'. (gdb) p bar $1 = ( my_type = ( my_int = 1 ) ) After: (gdb) p bar%my_type $1 = ( my_int = 1 ) (gdb) p bar%my_int $2 = 1 # this line requires DW_TAG_inheritance to work (gdb) p bar%my_type%my_int $3 = 1 (gdb) p bar $4 = ( my_type = ( my_int = 1 ) ) In the above example "p bar%my_int" requires the compiler to emit information about the inheritance relationship between extended_type and my_type which gfortran and flang currently do not de. The respective issue gcc/49475 has been put as kfail. Co-authored-by: Nils-Christian Kempke <nils-christian.kempke@intel.com> Bug: https://sourceware.org/bugzilla/show_bug.cgi?id=26373 https://sourceware.org/bugzilla/show_bug.cgi?id=22497 |
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bfd | ||
binutils | ||
config | ||
contrib | ||
cpu | ||
elfcpp | ||
etc | ||
gas | ||
gdb | ||
gdbserver | ||
gdbsupport | ||
gnulib | ||
gold | ||
gprof | ||
gprofng | ||
include | ||
intl | ||
ld | ||
libbacktrace | ||
libctf | ||
libdecnumber | ||
libiberty | ||
opcodes | ||
readline | ||
sim | ||
texinfo | ||
zlib | ||
.cvsignore | ||
.editorconfig | ||
.gitattributes | ||
.gitignore | ||
ar-lib | ||
ChangeLog | ||
compile | ||
config-ml.in | ||
config.guess | ||
config.rpath | ||
config.sub | ||
configure | ||
configure.ac | ||
COPYING | ||
COPYING3 | ||
COPYING3.LIB | ||
COPYING.LIB | ||
COPYING.LIBGLOSS | ||
COPYING.NEWLIB | ||
depcomp | ||
djunpack.bat | ||
install-sh | ||
libtool.m4 | ||
lt~obsolete.m4 | ||
ltgcc.m4 | ||
ltmain.sh | ||
ltoptions.m4 | ||
ltsugar.m4 | ||
ltversion.m4 | ||
MAINTAINERS | ||
Makefile.def | ||
Makefile.in | ||
Makefile.tpl | ||
makefile.vms | ||
missing | ||
mkdep | ||
mkinstalldirs | ||
move-if-change | ||
multilib.am | ||
README | ||
README-maintainer-mode | ||
setup.com | ||
src-release.sh | ||
symlink-tree | ||
test-driver | ||
ylwrap |
README for GNU development tools This directory contains various GNU compilers, assemblers, linkers, debuggers, etc., plus their support routines, definitions, and documentation. If you are receiving this as part of a GDB release, see the file gdb/README. If with a binutils release, see binutils/README; if with a libg++ release, see libg++/README, etc. That'll give you info about this package -- supported targets, how to use it, how to report bugs, etc. It is now possible to automatically configure and build a variety of tools with one command. To build all of the tools contained herein, run the ``configure'' script here, e.g.: ./configure make To install them (by default in /usr/local/bin, /usr/local/lib, etc), then do: make install (If the configure script can't determine your type of computer, give it the name as an argument, for instance ``./configure sun4''. You can use the script ``config.sub'' to test whether a name is recognized; if it is, config.sub translates it to a triplet specifying CPU, vendor, and OS.) If you have more than one compiler on your system, it is often best to explicitly set CC in the environment before running configure, and to also set CC when running make. For example (assuming sh/bash/ksh): CC=gcc ./configure make A similar example using csh: setenv CC gcc ./configure make Much of the code and documentation enclosed is copyright by the Free Software Foundation, Inc. See the file COPYING or COPYING.LIB in the various directories, for a description of the GNU General Public License terms under which you can copy the files. REPORTING BUGS: Again, see gdb/README, binutils/README, etc., for info on where and how to report problems.