re PR c++/69145 (Bogus 'warning: #pragma implementation for ‘...’ appears after file is included')

	PR c++/69145
	* files.c (cpp_included_before): If IS_ADHOC_LOC (location), lookup
	real location from the line_table.

	* g++.dg/ext/pr69145-1.C: New test.
	* g++.dg/ext/pr69145-2-very-long-filename.cc: New file.
	* g++.dg/ext/pr69145-2.h: New file.

From-SVN: r232150

gcc/testsuite/ChangeLog

+2016-01-08  Jakub Jelinek  <jakub@redhat.com>
+
+	PR c++/69145
+	* g++.dg/ext/pr69145-1.C: New test.
+	* g++.dg/ext/pr69145-2-very-long-filename.cc: New file.
+	* g++.dg/ext/pr69145-2.h: New file.
+
 2016-01-07  Martin Sebor  <msebor@redhat.com>
 
 	PR c/68966

gcc/testsuite/g++.dg/ext/pr69145-1.C

+// PR c++/69145
+// { dg-do compile }
+#pragma implementation "pr69145-2-very-long-filename.cc" // { dg-bogus "appears after file is included" }
+#include "pr69145-2-very-long-filename.cc"

gcc/testsuite/g++.dg/ext/pr69145-2-very-long-filename.cc

+// PR c++/69145
+// { dg-do compile } */
+#include "pr69145-2.h"

gcc/testsuite/g++.dg/ext/pr69145-2.h

+#ifndef PR69145_2_H
+# define PR69145_2_H
+#endif

libcpp/ChangeLog

+2016-01-08  Jakub Jelinek  <jakub@redhat.com>
+
+	PR c++/69145
+	* files.c (cpp_included_before): If IS_ADHOC_LOC (location), lookup
+	real location from the line_table.
+
 2016-01-04  Jakub Jelinek  <jakub@redhat.com>
 
 	Update copyright years.

libcpp/files.c

@@ -1224,11 +1224,13 @@ bool
 cpp_included_before (cpp_reader *pfile, const char *fname,
 		     source_location location)
 {
-  struct cpp_file_hash_entry *entry;
-
-  entry = (struct cpp_file_hash_entry *)
+  struct cpp_file_hash_entry *entry
+    = (struct cpp_file_hash_entry *)
       htab_find_with_hash (pfile->file_hash, fname, htab_hash_string (fname));
 
+  if (IS_ADHOC_LOC (location))
+    location = get_location_from_adhoc_loc (pfile->line_table, location);
+
   while (entry && (entry->start_dir == NULL || entry->u.file->err_no
 		   || entry->location > location))
     entry = entry->next;