https://savannah.gnu.org/bugs/?30653
https://bugs.gentoo.org/431250

From d1ba0ee36b2bdd91434b5df90f0f4cceda7d6979 Mon Sep 17 00:00:00 2001
From: psmith <psmith>
Date: Mon, 10 Sep 2012 02:36:05 +0000
Subject: [PATCH] Force intermediate targets to be considered if their
 non-intermediate parent needs to be remade.  Fixes Savannah
 bug #30653.

---
 ChangeLog                          |  4 ++++
 remake.c                           |  4 ++++
 tests/scripts/features/parallelism | 17 +++++++++++++++++
 3 files changed, 25 insertions(+)

diff --git a/remake.c b/remake.c
index c0bf709..b1ddd23 100644
--- a/remake.c
+++ b/remake.c
@@ -612,6 +612,10 @@ update_file_1 (struct file *file, unsigned int depth)
                 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);
 
diff --git a/tests/scripts/features/parallelism b/tests/scripts/features/parallelism
index d4250f0..76d24a7 100644
--- a/tests/scripts/features/parallelism
+++ b/tests/scripts/features/parallelism
@@ -214,6 +214,23 @@ rm main.x");
     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
-- 
1.7.12