Binutils with MCST patches
8e6a5953e1
When current function changes after a next/step, GDB shows a message such as: (gdb) s info_fun1 () at /bd/home/philippe/gdb/git/build_smallthing/gdb/testsuite/../../../smallthing/gdb/testsuite/gdb.base/info_qt.c:41 41 info_qt_inc++; (gdb) Valgrind reports a 4K definite leak for each such message (full stacktrace of the leak below). This patch fixes this leak, by transferring the current s->fullname to the unique_xmalloc_ptr fullname given to find_and_open_source. Note that I do not understand why find_and_open_source always tries to re-execute the substitution rules on the provided fullname, as source.c symtab_to_fullname just blindly returns a non NULL s->fullname, counting on forget_cached_source_info to be called if search dir or substitution rules are changed. Similarly, psymtab_to_fullname also just returns a non NULL ps->fullname. ==15309== VALGRIND_GDB_ERROR_BEGIN ==15309== 69,632 bytes in 17 blocks are definitely lost in loss record 3,158 of 3,186 ==15309== at 0x4C2BE2D: malloc (vg_replace_malloc.c:299) ==15309== by 0x5BF0987: realpath@@GLIBC_2.3 (canonicalize.c:78) ==15309== by 0x41F713: gdb_realpath(char const*) (pathstuff.c:72) ==15309== by 0x608833: openp(char const*, enum_flags<openp_flag>, char const*, int, std::unique_ptr<char, gdb::xfree_deleter<char> >*) (source.c:861) ==15309== by 0x608B89: find_and_open_source(char const*, char const*, std::unique_ptr<char, gdb::xfree_deleter<char> >*) (source.c:1049) ==15309== by 0x608D0B: open_source_file(symtab*) (source.c:1074) ==15309== by 0x609101: print_source_lines_base(symtab*, int, int, enum_flags<print_source_lines_flag>) (source.c:1291) ==15309== by 0x614ADF: print_frame_info(frame_info*, int, print_what, int, int) (stack.c:911) ==15309== by 0x614C45: print_stack_frame(frame_info*, int, print_what, int) (stack.c:181) ==15309== by 0x511D5E: print_stop_location (infrun.c:8044) ==15309== by 0x511D5E: print_stop_event(ui_out*) (infrun.c:8061) ==15309== by 0x40DD6D: cli_on_normal_stop(bpstats*, int) (cli-interp.c:145) ==15309== by 0x512409: operator() (functional:2127) ==15309== by 0x512409: notify (observable.h:106) ==15309== by 0x512409: normal_stop() (infrun.c:8334) ==15309== by 0x5156D8: fetch_inferior_event(void*) (infrun.c:3955) ==15309== by 0x4B3EEC: gdb_wait_for_event(int) (event-loop.c:859) ==15309== by 0x4B3FF6: gdb_do_one_event() [clone .part.4] (event-loop.c:322) ==15309== by 0x4B41B4: gdb_do_one_event (common-exceptions.h:219) ==15309== by 0x4B41B4: start_event_loop() (event-loop.c:371) ==15309== by 0x551217: captured_command_loop() (main.c:330) ==15309== by 0x55220C: captured_main (main.c:1177) ==15309== by 0x55220C: gdb_main(captured_main_args*) (main.c:1193) ==15309== by 0x29B4F7: main (gdb.c:32) ==15309== ==15309== VALGRIND_GDB_ERROR_END gdb/ChangeLog 2018-11-04 Philippe Waroquiers <philippe.waroquiers@skynet.be> * source.c (open_source_file): Fix leak by transferring the current s->fullname to the unique_xmalloc_ptr fullname given to find_and_open_source. |
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bfd | ||
binutils | ||
config | ||
contrib | ||
cpu | ||
elfcpp | ||
etc | ||
gas | ||
gdb | ||
gold | ||
gprof | ||
include | ||
intl | ||
ld | ||
libdecnumber | ||
libiberty | ||
opcodes | ||
readline | ||
sim | ||
texinfo | ||
zlib | ||
.cvsignore | ||
.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.