gdb/

	PR 11804
	* defs.h (find_memory_region_ftype): New comment.  New arg modified.
	* fbsd-nat.c (fbsd_find_memory_regions): Add the passed modified value.
	* gcore.c (gcore_create_callback): New function comment.  Add modified
	parameter.  Only write modified regions.  Set SEC_READONLY exactly
	according to MODIFIED.
	(objfile_find_memory_regions): Ignore separate debug info files.  Ass
	the passed modified value to FUNC.
	* gnu-nat.c (gnu_find_memory_regions): Add the passed modified value.
	* linux-tdep.c (linux_find_memory_regions): Try to reads smaps file
	first.  New variables modified and has_anonymous.  Parse the lines of
	smaps file.  Add the passed MODIFIED value to FUNC.
	* procfs.c (find_memory_regions_callback): Add the passed modified
	value.

gdb/testsuite/
	PR 11804
	* gdb.base/gcore-relro.exp: New file.
	* gdb.base/gcore-relro-main.c: New file.
	* gdb.base/gcore-relro-lib.c: New file.

1 files changed, 3 insertions, 2 deletions

diff --git a/gdb/fbsd-nat.c b/gdb/fbsd-nat.c
index b3e4fab..4a8a509 100644
--- a/gdb/fbsd-nat.c
+++ b/gdb/fbsd-nat.c
@@ -131,8 +131,9 @@ fbsd_find_memory_regions (find_memory_region_ftype func, void *obfd)
 			    exec ? 'x' : '-');
 	}
 
-      /* Invoke the callback function to create the corefile segment.  */
-      func (start, size, read, write, exec, obfd);
+      /* Invoke the callback function to create the corefile segment.
+	 Pass MODIFIED as true, we do not know the real modification state.  */
+      func (start, size, read, write, exec, 1, obfd);
     }
 
   do_cleanups (cleanup);