This patch addresses PR gdb/27133. Before it, the following succession of commands would cause gdb to crash: set logging redirect on set logging debugredirect on set logging on The problem eventually comes down to a use after free. The function cli_interp_base::set_logging is called with a unique_ptr argument that holds a pointer to the redirection file. In the problematic use case, no-one ever took ownership of that pointer (as far as unique_ptr is concerned), so the call to its dtor at the end of the function causes the file object to be deleted. Any later use of the pointer to the redirection file is therefore an error. This patch ensures that the unique_ptr is released when required (so it does not assume ownership anymore). The internal logic of cli_interp_base::set_logging takes care of freeing the ui_file when it is not necessary anymore using the saved_output.file_to_delete field. gdb/ChangeLog: PR gdb/27133 * cli/cli-interp.c (cli_interp_base::set_logging): Ensure the unique_ptr is released when the wrapped pointer is kept for later use. gdb/testsuite/ChangeLog: PR gdb/27133 * gdb.base/ui-redirect.exp: Add test case that ensures that redirecting both logging and debug does not cause gdb to crash. |
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config | ||
contrib | ||
cpu | ||
elfcpp | ||
etc | ||
gas | ||
gdb | ||
gdbserver | ||
gdbsupport | ||
gnulib | ||
gold | ||
gprof | ||
include | ||
intl | ||
ld | ||
libctf | ||
libdecnumber | ||
libiberty | ||
opcodes | ||
readline | ||
sim | ||
texinfo | ||
zlib | ||
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ar-lib | ||
ChangeLog | ||
compile | ||
config-ml.in | ||
config.guess | ||
config.rpath | ||
config.sub | ||
configure | ||
configure.ac | ||
COPYING | ||
COPYING3 | ||
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COPYING.LIB | ||
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depcomp | ||
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libtool.m4 | ||
lt~obsolete.m4 | ||
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missing | ||
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move-if-change | ||
multilib.am | ||
README | ||
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setup.com | ||
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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.