https://savannah.gnu.org/bugs/?30653

2012-09-09  Paul Smith  <psmith@gnu.org>

	* remake.c (update_file_1): Force intermediate files to be
	considered, not pruned, if their non-intermediate parent needs to
	be remade.  Fixes Savannah bug #30653.

Index: remake.c
===================================================================
RCS file: /sources/make/make/remake.c,v
retrieving revision 1.153
retrieving revision 1.154
diff -u -r1.153 -r1.154
--- remake.c	5 Mar 2012 14:10:45 -0000	1.153
+++ remake.c	10 Sep 2012 02:36:05 -0000	1.154
@@ -612,6 +612,10 @@
                 d->file->dontcare = file->dontcare;
               }

+            /* We may have already considered this file, when we didn't know
+               we'd need to update it.  Force update_file() to consider it and
+               not prune it.  */
+            d->file->considered = !considered;

	    dep_status |= update_file (d->file, depth);

Index: tests/scripts/features/parallelism
===================================================================
RCS file: /sources/make/make/tests/scripts/features/parallelism,v
retrieving revision 1.19
retrieving revision 1.20
diff -u -r1.19 -r1.20
--- tests/scripts/features/parallelism	4 Mar 2012 00:24:32 -0000	1.19
+++ tests/scripts/features/parallelism	10 Sep 2012 02:36:05 -0000	1.20
@@ -214,6 +214,23 @@
     rmfiles(qw(foo.y foo.y.in main.bar));
 }

+# Ensure intermediate/secondary files are not pruned incorrectly.
+# See Savannah bug #30653
+
+utouch(-15, 'file2');
+utouch(-10, 'file4');
+utouch(-5,  'file1');
+
+run_make_test(q!
+.INTERMEDIATE: file3
+file4: file3 ; @mv -f $< $@
+file3: file2 ; touch $@
+file2: file1 ; @touch $@
+!,
+              '--no-print-directory -j2', "touch file3");
+
+#rmfiles('file1', 'file2', 'file3', 'file4');
+
 if ($all_tests) {
     # Jobserver FD handling is messed up in some way.
     # Savannah bug #28189