Re: [PATCH] Skip module_cmi_p and related unsupported module test

[Alexandre Oliva <oliva@adacore.com>]

On Feb 20, 2023, Jason Merrill <jason@redhat.com> wrote:

> This seems like an ugly kludge around that problem, but I don't have
> any clever ideas of a better approach short of rewriting everything.
> So, OK with a comment explaining the rationale above your overridden
> "unsupported".

> Also, your commit subject line needs a subsystem tag, I guess
> "testsuite:" in this case.

*nod*, thanks, I'm checking in the adjusted patch below.


testsuite: Skip module_cmi_p and related unsupported module test

From: Alexandre Oliva <oliva@adacore.com>

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.
---
 gcc/testsuite/g++.dg/modules/modules.exp |   17 +++++++++++++++++
 1 file changed, 17 insertions(+)

diff --git a/gcc/testsuite/g++.dg/modules/modules.exp b/gcc/testsuite/g++.dg/modules/modules.exp
index 61994b059457b..e66b2082f2055 100644
--- a/gcc/testsuite/g++.dg/modules/modules.exp
+++ b/gcc/testsuite/g++.dg/modules/modules.exp
@@ -315,6 +315,17 @@ proc module-check-requirements { tests } {
 # cleanup any detritus from previous run
 cleanup_module_files [find $DEFAULT_REPO *.gcm]
 
+# Override unsupported to set the second element of module_do to "N",
+# 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]
+}
+
 # not grouped tests, sadly tcl doesn't have negated glob
 foreach test [prune [lsort [find $srcdir/$subdir {*.[CH]}]] \
 		  "$srcdir/$subdir/*_?.\[CH\]"] {
@@ -327,6 +338,9 @@ foreach test [prune [lsort [find $srcdir/$subdir {*.[CH]}]] \
 	    set module_cmis {}
 	    verbose "Testing $nshort $std" 1
 	    dg-test $test "$std" $DEFAULT_MODFLAGS
+	    if { [lindex $module_do 1] == "N" } {
+		continue
+	    }
 	    set testcase [string range $test [string length "$srcdir/"] end]
 	    cleanup_module_files [module_cmi_p $testcase $module_cmis]
 	}
@@ -372,6 +386,9 @@ foreach src [lsort [find $srcdir/$subdir {*_a.[CHX}]] {
 			}
 		    }
 		    dg-test -keep-output $test "$std" $DEFAULT_MODFLAGS
+		    if { [lindex $module_do 1] == "N" } {
+			break
+		    }
 		    set testcase [string range $test [string length "$srcdir/"] end]
 		    lappend mod_files [module_cmi_p $testcase $module_cmis]
 		}


-- 
Alexandre Oliva, happy hacker                https://FSFLA.org/blogs/lxo/
   Free Software Activist                       GNU Toolchain Engineer
Disinformation flourishes because many people care deeply about injustice
but very few check the facts.  Ask me about <https://stallmansupport.org>