[RFA/testsuite/ada] Do not abort prematurely the test upon build failure

[Joel Brobecker <brobecker at gnat dot com>]

I was triple checking that I fail gracefully if we don't find any
gnatmake program when running our new ada tescase, and that part seems
fine. But, on the contrary, I think we're being perhaps a little too
silent.

Right now, if you don't run the null_record.exp testcase with -v,
the entire test gets skipped without any message (ie no compilation
error message, no pass, no fail).

With -v, we get:
<<
Ada compilation failed: default_target_compile: Can't find gnatmake.
>>

That's because in null_record.exp, I have put:

        if {[gdb_compile_ada <bla bla bla>] != "" } {
 !! ->    return -1
        }

So indeed, when gdb_compile_ada fails, I simply abort the test...
A bit too extreme, maybe? :-).

Anyway, I looked at various tests in the gdb.base and gdb.cp
subdirectory, and found that the common thing to do something
like this:

        gdb_suppress_entire_file "Testcase compile failed, [...]"

Here is the output (not very pretty, but oh well) I get after using
this procedure, instead of returning prematurely:

<<
WARNING: Testcase compile failed, so all tests in this file will automatically fail.

ERROR: (timeout) GDB never initialized after 10 seconds.
WARNING: remote_expect statement without a default case?!
ERROR: couldn't load /home/brobecke/act/gdb-public/gdb/testsuite/gdb.ada/null_record into /home/brobecke/act/gdb-public/gdb/testsuite/../../gdb/gdb (end of file).
FAIL: gdb.ada/null_record.exp: ptype on null record
>>

Note that the logs still do not contain the reason for the failure.
The reason is only printed if I run the testcase with -v.

2004-03-31  Joel Brobecker  <brobecker@gnat.com>

        * gdb.ada/null_record.exp: Do not abort the test prematurely
        if the build of the example program failed. Report a warning
        and automatically fail the tests in that file.

Tested on x86-linux.

OK to apply?

Thanks,
-- 
Joel

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