suppress multiple breakpoints-invalid annotations when the ignore count of a breakpoint changes, up until the target actually stops. But, the code is bogus: void annotate_breakpoints_changed (void) { if (annotation_level == 2) { target_terminal_ours (); printf_unfiltered (("\n\032\032breakpoints-invalid\n")); if (ignore_count_changed) ignore_count_changed = 0; /* Avoid multiple break annotations. */ } } The "ignore_count_changed" flag isn't actually guarding the output of the annotation at all. It would have been better written something like: void annotate_breakpoints_changed (void) { if (annotation_level == 2 && !ignore_count_changed) { target_terminal_ours (); printf_unfiltered (("\n\032\032breakpoints-invalid\n")); ignore_count_changed = 0; /* Avoid multiple break annotations. */ } } but, it wasn't. AFAICS, that goes all the way back to the original patch'es submission and check in, at <http://sourceware.org/ml/gdb-patches/1999-q4/msg00106.html>. I looked a tar of HP's wdb from 1999, and even though that contains local changes in the annotate code, this suppression seems borked there too to me. The original patch added a test to supposedly exercise this suppression, but, it actually doesn't. It merely tests that "breakpoints-invalid" is output after "stopped", but doesn't check whether the duplicates supression actually works (IOW, check that only _one_ annotation is seen). I was going to simply delete the tests too, but a following patch will eliminate the duplicates in a different way (which I needed for a different reason), so instead, I'm making the tests actually fail if a duplicate annotation is seen. Worry not, the test doesn't actually fail! The reason is that breakpoint.c does: else if (b->ignore_count > 0) { b->ignore_count--; annotate_ignore_count_change (); bs->stop = 0; /* Increase the hit count even though we don't stop. */ ++(b->hit_count); observer_notify_breakpoint_modified (b); } where the annotate_ignore_count_change call is meant to inform the "breakpoint_modified" annotation observer to ignore the notification. All sounds good. But, the trouble is that nowadays annotate.c only installs the observers if GDB is started with annotations enabled with a command line option (gdb --annotate=2): void _initialize_annotate (void) { if (annotation_level == 2) { observer_attach_breakpoint_deleted (breakpoint_changed); observer_attach_breakpoint_modified (breakpoint_changed); } } and annota1.exp, to enable annotations, starts GDB normally, and afterwards does "set annotate 2", so the observers aren't installed when annota1.exp is run, and therefore changing the ignore count isn't triggering any annotation at all... gdb/ 2013-01-22 Pedro Alves <palves@redhat.com> * annotate.c (ignore_count_changed): Delete. (annotate_breakpoints_changed): Don't clear ignore_count_changed. (annotate_ignore_count_change): Delete. (annotate_stopped): Don't emit a delayed breakpoints-changed annotation. * annotate.h (annotate_ignore_count_change): Delete. * breakpoint.c (bpstat_check_breakpoint_conditions): Don't call annotate_ignore_count_change. gdb/testsuite/ 2013-01-22 Pedro Alves <palves@redhat.com> * gdb.base/annota1.exp (annotate ignore count change): Add expected output for failure case. |
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bfd | ||
binutils | ||
config | ||
cpu | ||
elfcpp | ||
etc | ||
gas | ||
gdb | ||
gold | ||
gprof | ||
include | ||
intl | ||
ld | ||
libdecnumber | ||
libiberty | ||
opcodes | ||
readline | ||
sim | ||
texinfo | ||
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.gitignore | ||
COPYING | ||
COPYING.LIB | ||
COPYING.LIBGLOSS | ||
COPYING.NEWLIB | ||
COPYING3 | ||
COPYING3.LIB | ||
ChangeLog | ||
MAINTAINERS | ||
Makefile.def | ||
Makefile.in | ||
Makefile.tpl | ||
README | ||
README-maintainer-mode | ||
compile | ||
config-ml.in | ||
config.guess | ||
config.rpath | ||
config.sub | ||
configure | ||
configure.ac | ||
depcomp | ||
djunpack.bat | ||
install-sh | ||
libtool.m4 | ||
ltgcc.m4 | ||
ltmain.sh | ||
ltoptions.m4 | ||
ltsugar.m4 | ||
ltversion.m4 | ||
lt~obsolete.m4 | ||
makefile.vms | ||
missing | ||
mkdep | ||
mkinstalldirs | ||
move-if-change | ||
setup.com | ||
src-release | ||
symlink-tree | ||
ylwrap |
README
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.