doc/news.texi                     |  8 ++++++++
 run.go                            | 20 ++++++++++++++++++++
 t/goredo-both-ifcreate-ifchange.t | 15 +++++++++++++++
 usage.go                          |  2 +-

diff --git a/doc/news.texi b/doc/news.texi
index 1471d26fd037dab0cb3f09f55cc145fbf376c946bfa9381efb2e0011a1cb1d47..a7fcb4cf9edaba645b01b437edd4d70bf84dffe42c168f50c91716ad1dd639be 100644
--- a/doc/news.texi
+++ b/doc/news.texi
@@ -1,6 +1,14 @@
 @node News
 @unnumbered News
 
+@anchor{Release 1_20_0}
+@section Release 1.20.0
+@itemize
+@item
+    Print warning message if both ifcreate and ifchange records were
+    discovered after the target is done.
+@end itemize
+
 @anchor{Release 1_19_0}
 @section Release 1.19.0
 @itemize
diff --git a/run.go b/run.go
index 7086704112aa372c9bc1647ea4b57b2aacaa4d31cc792d395f6896a3b5eb5ff1..f5cf3c3d04ad8dcd742c5ad61c15afa5396991a4a03aa09b5b72e415a08e5e7a 100644
--- a/run.go
+++ b/run.go
@@ -731,6 +731,26 @@ 			if err != nil {
 				goto Finish
 			}
 		}
+
+		// Post-commit .rec sanitizing
+		fdDep.Close()
+		if fdDepR, err := os.Open(fdDepPath); err == nil {
+			depInfo, err := depRead(fdDepR)
+			fdDepR.Close()
+			if err != nil {
+				goto Finish
+			}
+			ifchangeSeen := make(map[string]struct{}, len(depInfo.ifchanges))
+			for _, dep := range depInfo.ifchanges {
+				ifchangeSeen[dep["Target"]] = struct{}{}
+			}
+			for _, dep := range depInfo.ifcreates {
+				if _, exists := ifchangeSeen[dep]; exists {
+					tracef(CWarn, "simultaneous ifcreate and ifchange records: %s", tgt)
+				}
+			}
+		}
+
 	Finish:
 		runErr.Err = err
 		errs <- runErr
diff --git a/t/goredo-both-ifcreate-ifchange.t b/t/goredo-both-ifcreate-ifchange.t
new file mode 100755
index 0000000000000000000000000000000000000000..df15e81e014a23c0ca0a5efeca0974c90af8da55ea842076c5d9756b180d7287
--- /dev/null
+++ b/t/goredo-both-ifcreate-ifchange.t
@@ -0,0 +1,15 @@
+#!/bin/sh
+
+testname=`basename "$0"`
+test_description="Check that warning exists when using both ifcreate/ifchange"
+. $SHARNESS_TEST_SRCDIR/sharness.sh
+export REDO_TOP_DIR="`pwd`" REDO_NO_PROGRESS=1
+
+touch src
+echo redo-ifchange src > tgt.do
+echo redo-ifcreate src >> tgt.do
+redo tgt 2>2
+
+test_expect_success "warn exists" 'grep -q "simultaneous ifcreate and ifchange" 2'
+
+test_done
diff --git a/usage.go b/usage.go
index 574731c540a3d0d4cbcc01a7ea2c5a97e6716e6ddeea3c03d7ca9c15fd8eb36b..96768264651756bd1e240d303f4d1abde6440a501417a012968a49d9e545f4c5 100644
--- a/usage.go
+++ b/usage.go
@@ -24,7 +24,7 @@ 	"os"
 )
 
 const (
-	Version  = "1.19.0"
+	Version  = "1.20.0"
 	Warranty = `Copyright (C) 2020-2021 Sergey Matveev
 
 This program is free software: you can redistribute it and/or modify