426f7bbfd4
Before commit 5ef670d81fd "[gdb/testsuite] Add dummy start and end CUs in
dwarf assembly" we had in exec outputs/gdb.dlang/watch-loc/watch-loc a D
compilation unit at offset 0xc7:
...
Compilation Unit @ offset 0xc7:
Length: 0x4c (32-bit)
Version: 4
Abbrev Offset: 0x64
Pointer Size: 8
<0><d2>: Abbrev Number: 2 (DW_TAG_compile_unit)
<d3> DW_AT_language : 19 (D)
...
with a corresponding .debug_aranges entry:
...
Offset into .debug_info: 0xc7
Pointer Size: 4
Segment Size: 0
Address Length
004004a7 0000000b
00000000 00000000
...
After that commit we have a dummy CU at offset 0xc7 and the D compilation unit
at offset 0xd2:
...
Compilation Unit @ offset 0xc7:
Length: 0x7 (32-bit)
Version: 4
Abbrev Offset: 0x64
Pointer Size: 8
Compilation Unit @ offset 0xd2:
Length: 0x4c (32-bit)
Version: 4
Abbrev Offset: 0x65
Pointer Size: 8
<0><dd>: Abbrev Number: 2 (DW_TAG_compile_unit)
<de> DW_AT_language : 19 (D)
...
while the .debug_aranges entry still points to 0xc7.
The problem is that the test-case uses a hack (quoting from
commit 75f06e9dc59):
...
[ Note: this is a non-trivial test-case. The file watch-loc-dw.S contains a
.debug_info section, but not an .debug_aranges section or any actual code.
The file watch-loc.c contains code and a .debug_aranges section, but no other
debug section. So, the intent for the .debug_aranges section in watch-loc.c
is to refer to a compilation unit in the .debug_info section in
watch-loc-dw.S. ]
...
and adding the dummy CU caused that hack to stop working.
Fix this by moving the generation of .debug_aranges from watch-loc.c to
watch-loc.exp, such that we have:
...
Offset into .debug_info: 0xd2
Pointer Size: 4
Segment Size: 0
Address Length
004004a7 0000000b
00000000 00000000
...
Tested on x86_64-linux.
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.