Re: [PATCH] Fix spurious mi-basics.exp failures

[Daniel Jacobowitz <drow@false.org>]

On Sat, May 06, 2006 at 03:19:32AM +0200, Ulrich Weigand wrote:
> Hello,
> 
> I'm seeing some FAILs in the mi-basics test case.  They're apparently
> caused by the expected output regexps in some of the mi_gdb_test
> statements lacking the 'serial number' the MI output lines start with.
> 
> Most mi_gdb_test statments already contain that number, but the 202,
> 203, and 208 tests don't have it.  Those are exactly the tests that
> fail for me.  Adding the numbers fixes the test.
> 
> Tested on s390-ibm-linux and s390x-ibm-linux.
> OK for mainline?
> 
> 
> ChangeLog:
> 
> 	* gdb.mi/mi-basics.exp: Add missing serial number to 
> 	expected output in some mi_gdb_test statements.
> 	* gdb.mi/mi2-basics.exp: Likewise.

Are you sure you tested these in the same build tree where they were
broken?

I might be misremembering, but when these tests were added, I think I
complained about the regexps: they fail when the srcdir is specified
using a relative path, but succeed with an absolute path, or the other
way round.

203-environment-directory
203^done,source-path="/big/fsf/commit/src/gdb/testsuite/gdb.mi:$cdir:$cwd"
(gdb) 
PASS: gdb.mi/mi-basics.exp: environment-directory empty-string
operation

Then again, my log does seem to match your results... I don't remember
these failing on this machine before.

From my previous system, an old test run passed with the anchors:

202-environment-directory /big/fsf/commit/src/gdb/testsuite/gdb.mi
202^done,source-path="/big/fsf/commit/src/gdb/testsuite/gdb.mi:$cdir:$cwd"
(gdb) 
PASS: gdb.mi/mi-basics.exp: environment-directory arg operation
203-environment-directory
203^done,source-path="/big/fsf/commit/src/gdb/testsuite/gdb.mi:$cdir:$cwd"
(gdb) 
PASS: gdb.mi/mi-basics.exp: environment-directory empty-string operation


From today:
202-environment-directory /space/fsf/commit/src/gdb/testsuite/gdb.mi
202^done,source-path="/space/fsf/commit/src/gdb/testsuite/gdb.mi:$cdir:$cwd"
(gdb)
FAIL: gdb.mi/mi-basics.exp: environment-directory arg operation
203-environment-directory
203^done,source-path="/space/fsf/commit/src/gdb/testsuite/gdb.mi:$cdir:$cwd"
(gdb)
FAIL: gdb.mi/mi-basics.exp: environment-directory empty-string operation


Oh, I bet I know what's happened!  These are the three tests that
failed based on relative srcdirs or something like that.  So when Bob
committed fixes to the MI testsuite which added anchoring to
mi_gdb_test, they probably failed for him both before and after, and
that's how they were missed.

Bob, does that sound reasonable?  If so, the patch is OK, and thanks!


-- 
Daniel Jacobowitz
CodeSourcery