BASEDIR was added by https://sourceware.org/ml/gdb-patches/2013-10/msg00587.html
in order to handle the different directory layout in serial testing
and parallel testing. BASEDIR is "gdb.base" in serial testing and is
"outputs/gdb.base/TESTNAME" in parallel testing. However, it doesn't
work if the GDBserver is in remote target, like this,
$ make check RUNTESTFLAGS='--target_board=remote-gdbserver-on-localhost foll-vfork.exp foll-exec.exp'
FAIL: gdb.base/foll-exec.exp: continue to first exec catchpoint (the program exited)
FAIL: gdb.base/foll-vfork.exp: exec: vfork and exec child follow, to main bp: continue to bp (the program exited)
FAIL: gdb.base/foll-vfork.exp: exec: vfork child follow, finish after tcatch vfork: finish (the program exited)
FAIL: gdb.base/foll-vfork.exp: exec: vfork relations in info inferiors: continue to bp (the program exited)
these tests fail because the executable can't be found. With target
board native-gdbserver, the program is spawned this way,
spawn ../gdbserver/gdbserver --once :2347 /scratch/yao/gdb/build-git/x86_64/gdb/testsuite/gdb.base/foll-vfork
so BASEDIR is correct. However, with target board
remote-gdbserver-on-localhost, the program is spawned
spawn /usr/bin/ssh -l yao localhost /scratch/yao/gdb/build-git/x86_64/gdb/testsuite/../gdbserver/gdbserver --once :2346 /scratch/yao/gdb/build-git/x86_64/gdb/testsuite/gdb.base/foll-vfork
so BASEDIR (either "gdb.base" or "outputs/gdb.base/TESTNAME") makes no
sense.
I had a fix that pass absolute directory to BASEDIR, but it assumes
that directory structure is the same on build and target, and it
doesn't work in remote host case. The current fix in this patch is
to get the directory from argv[0]. In any case, the program to be
exec'ed is at the same directory with the main program.
Note that these tests do "next N" to let program stop at the desired
line, but it is fragile, because GDB for different targets may skip
function prologue slightly differently, so I replace some of them by
"tbreak on LINE NUMBER and continue".
gdb/testsuite:
2016-02-04 Yao Qi <yao.qi@linaro.org>
* gdb.base/foll-exec-mode.c: Include limits.h.
(main): Add parameters argc and argv. Get directory from
argv[0].
* gdb.base/foll-exec-mode.exp: Don't pass -DBASEDIR in
compilation.
* gdb.base/foll-exec.c: Include limits.h.
(main): Add parameters argc and argv.
Get directory from argv[0].
* gdb.base/foll-exec.exp: Don't pass -DBASEDIR in compilation.
Adjust tests on the number of lines as source code changed.
* gdb.base/foll-vfork-exit.c: Include limits.h.
(main): Add one line of statement before vfork.
* gdb.base/foll-vfork.c: Include limits.h and string.h.
(main): Add parameters argc and argv. Get directory from
argv[0].
* gdb.base/foll-vfork.exp: Don't pass -DBASEDIR in compilation.
(setup_gdb): Set tbreak to skip some source lines.
* gdb.multi/bkpt-multi-exec.c: Include limits.h.
(main): Add parameters argc and argv. Get directory from
argv[0].
* gdb.multi/bkpt-multi-exec.exp: Don't pass -DBASEDIR in
compilation.
* gdb.multi/multi-arch-exec.c: Include limits.h and string.h.
(main): Add parameters argc and argv. Get directory from
argv[0].
* gdb.multi/multi-arch-exec.exp: Don't pass -DBASEDIR in
compilation.
Several of the gdb.multi tests use the "nowarnings" option to suppress
warnings. The warnings in question all come from missing headers,
like e.g.:
src/gdb/testsuite/gdb.multi/multi-arch-exec.c:28:3: warning: incompatible implicit declaration of built-in function 'exit' [enabled by default]
exit (1);
^
There's no point in trying to avoid to include standard headers. In
gdb.base/hangout.c's case, it's even dangerous, as that file calls
printf. In order to compile a call to a variatic function correctly,
a declaration must be visible.
gdb/testsuite/ChangeLog:
2015-12-10 Pedro Alves <palves@redhat.com>
* gdb.multi/base.exp: Don't use nowarnings.
* gdb.multi/bkpt-multi-exec.exp: Don't use nowarnings.
* gdb.multi/hangout.c: Include stdio.h.
* gdb.multi/hello.c: Include stdlib.h.
* gdb.multi/multi-arch-exec.c: Include stdlib.h.
* gdb.multi/multi-arch-exec.exp: Don't use nowarnings.
* gdb.multi/multi-arch.exp: Don't use nowarnings.
I noticed today that multi-arch-exec.exp was failing in parallel mode.
The bug is that multi-arch-exec.c assumes the non-parallel directory
layout.
This patch fixes the problem using the same "BASEDIR" approach used in
other tests.
Tested both ways on x86-64 Fedora 18.
I'm checking this in.
2013-11-13 Tom Tromey <tromey@redhat.com>
* gdb.multi/multi-arch-exec.exp: Define BASEDIR when compiling.
* gdb.multi/multi-arch-exec.c (main): Use BASEDIR.
Two modifications:
1. The addition of 2013 to the copyright year range for every file;
2. The use of a single year range, instead of potentially multiple
year ranges, as approved by the FSF.
