* mmap.cc (mmap_record::find_empty): Add input parameter check.

2001-11-05 20:58:22 +00:00 · 2001-11-05 20:58:22 +00:00 · 910e57ec84
parent c7dd4f9511
commit 910e57ec84
2 changed files with 6 additions and 0 deletions
--- a/winsup/cygwin/ChangeLog
+++ b/winsup/cygwin/ChangeLog
@ -1,3 +1,7 @@
+2001-11-05  Corinna Vinschen  <corinna@vinschen.de>
+
+	* mmap.cc (mmap_record::find_empty): Add input parameter check.
+
 2001-11-04  Christopher Faylor  <cgf@redhat.com>

 	* dtable.cc (dtable::build_fhandler): Fix debug_printf to avoid SEGV
--- a/winsup/cygwin/mmap.cc
+++ b/winsup/cygwin/mmap.cc
@ -109,6 +109,8 @@ mmap_record::find_empty (DWORD pages)
  DWORD mapped_pages = PAGE_CNT (size_to_map_);
  DWORD start;

+  if (pages > mapped_pages)
+    return (DWORD)-1;
  for (start = 0; start <= mapped_pages - pages; ++start)
    if (!MAP_ISSET (start))
      {