* go32-nat.c (read_memory_region): Make sure the segment limit was

	indeed set, to work around a Windows 2000 bug.

diff --git a/gdb/ChangeLog b/gdb/ChangeLog
index 921fbdd00d02787c6aa75bec233fc36eb9bb97a0..57ad4912b55061fe8299245c970a98e9e6c29ceb 100644 (file)
--- a/gdb/ChangeLog
+++ b/gdb/ChangeLog
@@ -1,3 +1,8 @@
+2001-07-26  Eli Zaretskii  <eliz@is.elta.co.il>
+
+       * go32-nat.c (read_memory_region): Make sure the segment limit was
+       indeed set, to work around a Windows 2000 bug.
+
 2001-07-25  Daniel Jacobowitz  <drow@mvista.com>
 
        * infptrace.c (child_xfer_memory): Add cast to CORE_ADDR.

diff --git a/gdb/go32-nat.c b/gdb/go32-nat.c
index fce7a0f4815a4937266ac37d01ab57b81da639e6..b2828ebaf440227acb49be6557165d1a891310c4 100644 (file)
--- a/gdb/go32-nat.c
+++ b/gdb/go32-nat.c
@@ -1331,7 +1331,10 @@ read_memory_region (unsigned long addr, void *dest, size_t len)
 
          if (__dpmi_set_segment_base_address (sel, addr) != -1
              && __dpmi_set_descriptor_access_rights (sel, access_rights) != -1
-             && __dpmi_set_segment_limit (sel, segment_limit) != -1)
+             && __dpmi_set_segment_limit (sel, segment_limit) != -1
+             /* W2K silently fails to set the segment limit, leaving
+                it at zero; this test avoids the resulting crash.  */
+             && __dpmi_get_segment_limit (sel) >= segment_limit)
            movedata (sel, 0, _my_ds (), (unsigned)dest, len);
          else
            retval = 0;