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[gdb/testsuite] Don't abort testrun for invalid command in test-case 

Say we add a call to foobar at the end of a test-case, and run the
test-suite.  We'll run into a dejagnu error:
...
ERROR: (DejaGnu) proc "foobar" does not exist.
...
and the test-suite run is aborted.

It's reasonable that the test-case is aborted, but it's not reasonable that
the testsuite run is aborted.

Problems in one test-case should not leak into other test-cases, and they
generally don't.  The exception is the "invalid command name" problem due to
an override of ::unknown in dejagnu's framework.exp.

Fix this by reverting dejagnu's ::unknown override for the duration of each
test-case, using the gdb_init/gdb_finish hooks.

Tested on x86_64-linux.

gdb/testsuite/ChangeLog:

2020-06-12  Tom de Vries  <tdevries@suse.de>

	PR testsuite/26110
	* lib/gdb.exp (gdb_init): Revert dejagnu's override of ::unknown.
	(gdb_finish): Reinstall dejagnu's override of ::unknown.
This commit is contained in:
Tom de Vries 2020-06-12 09:13:17 +02:00
parent 453c733fcf
commit 26783bce15
2 changed files with 23 additions and 1 deletions
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6
gdb/testsuite/ChangeLog
View File

@ -1,3 +1,9 @@
2020-06-12 Tom de Vries <tdevries@suse.de>
PR testsuite/26110
* lib/gdb.exp (gdb_init): Revert dejagnu's override of ::unknown.
(gdb_finish): Reinstall dejagnu's override of ::unknown.
2020-06-11 Tom Tromey <tom@tromey.com>
PR gdb/18318:

18
gdb/testsuite/lib/gdb.exp
View File

@ -5193,7 +5193,19 @@ proc gdb_init { test_file_name } {
global gdb_instances
set gdb_instances 0
return [default_gdb_init $test_file_name]
set res [default_gdb_init $test_file_name]
# Dejagnu overrides proc unknown. The dejagnu version may trigger in a
# test-case but abort the entire test run. To fix this, we install a
# local version here, which reverts dejagnu's override, and restore
# dejagnu's version in gdb_finish.
rename ::unknown ::dejagnu_unknown
proc unknown { args } {
# Dejagnu saves the original version in ::tcl_unknown, use it.
return [uplevel 1 ::tcl_unknown $args]
}
return $res
}
proc gdb_finish { } {
@ -5201,6 +5213,10 @@ proc gdb_finish { } {
global gdb_prompt
global cleanfiles
# Restore dejagnu's version of proc unknown.
rename ::unknown ""
rename ::dejagnu_unknown ::unknown
# Exit first, so that the files are no longer in use.
gdb_exit