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Joel Brobecker fc413dc467 gdb.base/break.exp: fix last "info break" test failure on Ubuntu 16.04
The last test of this testcase fails when run on Ubuntu 16.04 using
the system compiler (16.04):

    FAIL: gdb.base/break.exp: verify that they were cleared

This is because the testcase expected that a breakpoint on line 47 of break.c...

    printf ("%d\n", factorial (atoi ("6")));  /* set breakpoint 1 here */

... would actually be inserted on an instruction belonging to
that line. However, what actually happens is that system GCC on
that version of Ubuntu ends up inlining everything, including
the call to printf, thus reporting every instruction of generated
for this line of code as belonging to a different function. As
a result, GDB ends up insering the breakpoint on the next line
of code, which is line 49:

    (gdb) break break.c:$l
    Breakpoint 3 at 0x4005c1: file /[...]/gdb.base/break.c, line 49.

This causes a spurious failure in the "info break" test later on,
as it assumed that the breakpoint above is inserted on line 47:

    gdb_test "info break" "$srcfile:$line" "verify that they were cleared"

This patch fixes the issue by saving the actual source location where
the breakpoint was inserted.

gdb/testsuite/ChangeLog:

        * gdb.base/break.exp: Save the location where the breakpoint
        on break.c:47 was actually inserted when debugging the version
        compiled at -O2 and use it in the expected output of the "info
        break" test performed soon after.

tested on x86_64-linux, with two configurations:
  - Ubuntu 16.04 with the system compiler (breakpoint lands on line 49)
  - Ubuntu 16.04 with GCC 7.3.1 (breakpoint lands on line 47)
2018-01-29 23:04:51 -05:00
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gdb gdb.base/break.exp: fix last "info break" test failure on Ubuntu 16.04 2018-01-29 23:04:51 -05:00
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		   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,
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	./configure 
	make

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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
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	CC=gcc ./configure
	make

A similar example using csh:

	setenv CC gcc
	./configure
	make

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the Free Software Foundation, Inc.  See the file COPYING or
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REPORTING BUGS: Again, see gdb/README, binutils/README, etc., for info
on where and how to report problems.