--- gcc-10.1.0/libcpp/mkdeps.c.orig	2020-05-10 20:37:27.263933600 +0300
+++ gcc-10.1.0/libcpp/mkdeps.c	2020-05-10 20:42:00.700896900 +0300
@@ -156,7 +156,6 @@
 	      /* FALLTHROUGH  */
 
 	    case '#':
-	    case ':':
 	      buf[dst++] = '\\';
 	      /* FALLTHROUGH  */