re PR bootstrap/79567 (Compiler-warning "unknown escape sequence '\x'" about…

re PR bootstrap/79567 (Compiler-warning "unknown escape sequence '\x'" about genmatch-generated C-files on mingw-host)

2017-02-17  Richard Biener  <rguenther@suse.de>

	PR bootstrap/79567
	* genmatch.c (output_line_directive): Handle DIR_SEPARATOR_2.

From-SVN: r245527

gcc/ChangeLog

+2017-02-17  Richard Biener  <rguenther@suse.de>
+
+	PR bootstrap/79567
+	* genmatch.c (output_line_directive): Handle DIR_SEPARATOR_2.
+
 2017-02-17  Marek Polacek  <polacek@redhat.com>
 
 	PR middle-end/79536

gcc/genmatch.c

@@ -192,6 +192,11 @@ output_line_directive (FILE *f, source_location location,
     {
       /* When writing to a dumpfile only dump the filename.  */
       const char *file = strrchr (loc.file, DIR_SEPARATOR);
+#if defined(DIR_SEPARATOR_2)
+      const char *pos2 = strrchr (loc.file, DIR_SEPARATOR_2);
+      if (pos2 && (!file || (pos2 > file)))
+	file = pos2;
+#endif
       if (!file)
 	file = loc.file;
       else