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Hacking on sigstep.exp, I found it harder to understand and extend than ideal. - GDB is currently not restarted between the different tests/combinations in the file, and some parts of the tests' setup are done on the top level, and shared between tests. It's not trivial to understand which breakpoints each test procedure expects to be set or not set. And it's not trivial to disable parts of the test if you want quickly try out just a subset of the tests (running the whole file takes a bit). - Because GDB is currently not restarted between tests, if some test triggers a ptrace/kernel bug, the following tests may end up with cascading fails. That makes it hard to add a test to cover a kernel bug that isn't fixed yet, with a xfail/kfail. E.g,. note how with kernels with bug gdb/8744 (stepi over sigreturn syscall exits program) the test program exits, and nothing restarts it afterwards... - The manual test message prefix management gets a bit in the way. Nowadays, we have with_test_prefix which makes it simpler. - 'i' is used as parameter name in the various procedures, meaning 'the command the test', which isn't as obvious as it could. This commit addresses all that. gdb/testsuite/ 2014-10-28 Pedro Alves <palves@redhat.com> * gdb.base/sigstep.exp: Use build_executable instead of prepare_for_testing. (top level): Move code that starts GDB, runs to main and creates a display to ... (restart): ... this new procedure. (top level): Move backtrace from signal handler test to ... (validate_backtrace): ... this new procedure. (advance, advancei): Rename parameter from 'i' to 'cmd'. Use with_test_prefix. Always restart GDB. (skip_to_handler): Rename parameter from 'i' to 'cmd'. Use with_test_prefix. Always restart GDB. No need to delete breakpoints after the test. (test_skip_handler): Remove prefix parameter. (skip_over_handler, breakpoint_to_handler) (breakpoint_to_handler_entry, breakpoint_over_handler): Rename parameter from 'i' to 'cmd'. Use with_test_prefix. Always restart GDB. No need to delete breakpoints after the test. (top level): Use foreach to call the test procedures with different commands.
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.