8e81706197
Trying to insert a breakpoint using *FUNC'address with an Ada program and then running the program until reaching that breakpoint currently yields the following behavior: (gdb) break *a'address Breakpoint 1 at 0x40240c: file a.adb, line 1. (gdb) run [1] + 27222 suspended (tty output) /[...]/gdb -q simple_main Unsuspending GDB then shows it was suspended trying to report the following error: Starting program: /home/takamaka.a/brobecke/ex/simple/a Error in re-setting breakpoint 1: Unmatched single quote. Error in re-setting breakpoint 1: Unmatched single quote. Error in re-setting breakpoint 1: Unmatched single quote. [Inferior 1 (process 32470) exited normally] The "a'address" is Ada speak for function A's address ("A" by itself means the result of calling A with no arguments). The transcript above shows that we're having problems trying to parse the breakpoint location while re-setting it. As a result, we also fail to stop at the breakpoint. Normally, breakpoint locations are evaluated with the current_language being set to the language of the breakpoint. But, unfortunately for us, what happened in this case is that parse_exp_in_context_1 calls get_selected_block which eventually leads to a call to select_frame because the current_frame hadn't been set yet. select_frame then finds that our language_mode is auto, and therefore changes the current_language to match the language of the frame we just selected. In our case, the language chosen was 'c', which of course is not able to parse an Ada expression, hence the error. This patch prevents this by forcing the language_mode to manual before we call breakpoint_re_set_one. gdb/ChangeLog: * breakpoint.c (breakpoint_re_set): Temporarily force language_mode to language_mode_manual while calling breakpoint_re_set_one. gdb/testsuite/ChangeLog: * gdb.ada/bp_fun_addr: New testcase. Tested on x86_64-linux. |
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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.