Fix issue with implicit-cache when files are removed on disk. Fixes issue #1938.

3 files changed, 83 insertions, 3 deletions

diff --git a/src/CHANGES.txt b/src/CHANGES.txt
index 4c1bc5b..85d5bda 100644
--- a/src/CHANGES.txt
+++ b/src/CHANGES.txt
@@ -7,6 +7,11 @@
 
 RELEASE 2.1.0.alpha.yyyymmdd - NEW DATE WILL BE INSERTED HERE
 
+  From Allen Weeks:
+
+    - Fix for an issue with implicit-cache with multiple targets
+      when dependencies are removed on disk.
+
   From Evgeny Podjachev:
 
     - Support generation of Microsoft Visual Studio 2008 (9.0) 
diff --git a/src/engine/SCons/Node/__init__.py b/src/engine/SCons/Node/__init__.py
index 0bf490f..2fbe2c6 100644
--- a/src/engine/SCons/Node/__init__.py
+++ b/src/engine/SCons/Node/__init__.py
@@ -628,9 +628,10 @@ class Node(object):
                 if implicit_deps_unchanged or self.is_up_to_date():
                     return
                 # one of this node's sources has changed,
-                # so we must recalculate the implicit deps:
-                self.implicit = []
-                self.implicit_set = set()
+                # so we must recalculate the implicit deps for all targets
+                for tgt in executor.get_all_targets():
+                    tgt.implicit = []
+                    tgt.implicit_set = set()
 
         # Have the executor scan the sources.
         executor.scan_sources(self.builder.source_scanner)
diff --git a/test/implicit-cache/RemoveImplicitDep.py b/test/implicit-cache/RemoveImplicitDep.py
new file mode 100644
index 0000000..6a9b873
--- /dev/null
+++ b/test/implicit-cache/RemoveImplicitDep.py
@@ -0,0 +1,74 @@
+#!/usr/bin/env python
+#
+# __COPYRIGHT__
+#
+# Permission is hereby granted, free of charge, to any person obtaining
+# a copy of this software and associated documentation files (the
+# "Software"), to deal in the Software without restriction, including
+# without limitation the rights to use, copy, modify, merge, publish,
+# distribute, sublicense, and/or sell copies of the Software, and to
+# permit persons to whom the Software is furnished to do so, subject to
+# the following conditions:
+#
+# The above copyright notice and this permission notice shall be included
+# in all copies or substantial portions of the Software.
+#
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY
+# KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE
+# WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+# LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+# OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+# WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+#
+
+__revision__ = "__FILE__ __REVISION__ __DATE__ __DEVELOPER__"
+
+"""
+A weird case with implicit_cache not working with multiple targets
+"""
+
+import TestSCons
+
+_python_ = TestSCons._python_
+
+test = TestSCons.TestSCons()
+
+test.subdir(['src'])
+
+SConstruct_contents = """\
+import SCons.Script
+
+SetOption( 'implicit_cache', 1 )
+
+env = Environment()
+act = Action([Touch('${TARGETS[0]}'),Touch('${TARGETS[1]}')])
+env.Append(BUILDERS = {'BuildMe':Builder(action=act,source_scanner=SCons.Script.SourceFileScanner)} )
+
+env.BuildMe( source='inc.c', target=['a','b'] )
+"""
+
+test.write(['src', 'SConstruct'], SConstruct_contents)
+
+test.write(['src', 'inc.c'], """\
+#include <f1.h>
+#include <f2.h>
+""")
+test.write(['src', 'f1.h'], 'blah' )
+test.write(['src', 'f2.h'], 'blah' )
+        
+expect = test.wrap_stdout("""\
+Touch("a")
+Touch("b")
+""")
+
+test.run(chdir='src', arguments='', stdout=expect)
+
+test.write(['src', 'inc.c'], """\
+#include <f2.h>
+""")
+test.unlink( ['src', 'f1.h'] )
+
+test.run(chdir='src', arguments='', stdout=expect)
+
+test.pass_test()