[PATCH] testsuite: Fix up modules.exp [PR108899]

[Jakub Jelinek <jakub@redhat.com>]

Hi!

On Wed, Feb 22, 2023 at 02:33:42PM -0300, Alexandre Oliva via Gcc-patches wrote:
> When a multi-source module is found to be unsupported, we fail
> module_cmi_p and subsequent sources.  Override proc unsupported to
> mark the result in module_do, and test it to skip module_cmp_p and
> subsequent related tests.
> 
> for  gcc/testsuite/ChangeLog
> 
> 	* g++.dg/modules/modules.exp: Override unsupported to update
> 	module_do, and test it after dg-test.

This patch breaks testing with more than one set of options in
target board, like
make check-g++ RUNTESTFLAGS='--target_board=unix\{-m32,-m64\} modules.exp'
yields:
...
		=== g++ Summary for unix/-m32 ===

# of expected passes		7217
# of unexpected failures	1
# of expected failures		18
# of unsupported tests		2
Running target unix/-m64
...
ERROR: tcl error sourcing /home/jakub/src/gcc/gcc/testsuite/g++.dg/modules/modules.exp.
ERROR: tcl error code TCL OPERATION RENAME TARGET_EXISTS
ERROR: can't rename to "saved-unsupported": command already exists
    while executing
"rename unsupported saved-unsupported"
    (file "/home/jakub/src/gcc/gcc/testsuite/g++.dg/modules/modules.exp" line 322)
    invoked from within
"source /home/jakub/src/gcc/gcc/testsuite/g++.dg/modules/modules.exp"
    ("uplevel" body line 1)
    invoked from within
"uplevel #0 source /home/jakub/src/gcc/gcc/testsuite/g++.dg/modules/modules.exp"
    invoked from within
"catch "uplevel #0 source $test_file_name" msg"

In other spots where we in *.exp files rename some routine, we guard that
and the following patch does that for modules.exp too.

Tested with running
make check-g++ RUNTESTFLAGS='--target_board=unix\{-m32,-m64\} modules.exp'
again which now works properly again.

Ok for trunk?

2023-02-23  Jakub Jelinek  <jakub@redhat.com>

	PR testsuite/108899
	* g++.dg/modules/modules.exp: Only override unsupported if it
	exists and saved-unsupported doesn't.

--- gcc/testsuite/g++.dg/modules/modules.exp.jj	2023-02-22 20:50:34.208421799 +0100
+++ gcc/testsuite/g++.dg/modules/modules.exp	2023-02-23 13:07:40.207320104 +0100
@@ -319,11 +319,15 @@ cleanup_module_files [find $DEFAULT_REPO
 # so that, after an unsupported result in dg-test, we can skip rather
 # than fail subsequent related tests.
 set module_do {"compile" "P"}
-rename unsupported saved-unsupported
-proc unsupported { args } {
-    global module_do
-    lset module_do 1 "N"
-    return [saved-unsupported $args]
+if { [info procs unsupported] != [list] \
+      && [info procs saved-unsupported] == [list] } {
+    rename unsupported saved-unsupported
+
+    proc unsupported { args } {
+	global module_do
+	lset module_do 1 "N"
+	return [saved-unsupported $args]
+    }
 }
 
 # not grouped tests, sadly tcl doesn't have negated glob


	Jakub