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When running test-case gdb.fortran/array-slices.exp with target board unix/-m32, we run into: ... (gdb) print /x &array4d^M $69 = 0xffffb620^M (gdb) print /x (&array4d) + sizeof (array4d)^M $70 = 0x95c620^M (gdb) FAIL: gdb.fortran/array-slices.exp: repack=on: test 9: check sizes match ... The expressions calculate the start and end of an array, but the calculation of the end expression has an unexpected result (given that it lies before the start of the array). By printing "sizeof (array4d)" as a separate expression: ... (gdb) print /x sizeof (array4d) $1 = 0xc40 ... it becomes clear we expected to get 0xffffb620 + 0xc40 == 0xffffc260 instead. The problem is that using the '&' returns a pointer type: ... (gdb) p &array4d $5 = (PTR TO -> ( integer(kind=4) (-3:3,7:10,-3:3,-10:-7) )) 0xffffbe00 ... which has the consequence that the addition is done as pointer arithmetic. Fix this by using the result of "print /x &array4d" instead of &array4d in the addition. Tested on x86_64-linux. gdb/testsuite/ChangeLog: 2021-01-15 Tom de Vries <tdevries@suse.de> PR testsuite/26997 * gdb.fortran/array-slices.exp (run_test): Avoid pointer arithmetic when adding sizeof.
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.