X-Git-Url: http://drtracing.org/?a=blobdiff_plain;f=opcodes%2Fdis-buf.c;h=e4911b9ecda77f51576705375e7fcacb93c7ab2a;hb=7243d0118af6f72e3e72db1eb66941fec4530963;hp=cc0e3ad2fba99c187f6388fc01f74361961bfb7c;hpb=b90efa5b79ac1524ec260f8eb89d1be37e0219a7;p=deliverable%2Fbinutils-gdb.git

diff --git a/opcodes/dis-buf.c b/opcodes/dis-buf.c
index cc0e3ad2fb..e4911b9ecd 100644
--- a/opcodes/dis-buf.c
+++ b/opcodes/dis-buf.c
@@ -1,5 +1,5 @@
 /* Disassemble from a buffer, for GNU.
-   Copyright (C) 1993-2015 Free Software Foundation, Inc.
+   Copyright (C) 1993-2018 Free Software Foundation, Inc.
 
    This file is part of the GNU opcodes library.
 
@@ -32,13 +32,15 @@ buffer_read_memory (bfd_vma memaddr,
 		    struct disassemble_info *info)
 {
   unsigned int opb = info->octets_per_byte;
-  unsigned int end_addr_offset = length / opb;
-  unsigned int max_addr_offset = info->buffer_length / opb; 
-  unsigned int octets = (memaddr - info->buffer_vma) * opb;
+  size_t end_addr_offset = length / opb;
+  size_t max_addr_offset = info->buffer_length / opb;
+  size_t octets = (memaddr - info->buffer_vma) * opb;
 
   if (memaddr < info->buffer_vma
       || memaddr - info->buffer_vma > max_addr_offset
-      || memaddr - info->buffer_vma + end_addr_offset > max_addr_offset)
+      || memaddr - info->buffer_vma + end_addr_offset > max_addr_offset
+      || (info->stop_vma && (memaddr >= info->stop_vma
+			     || memaddr + end_addr_offset > info->stop_vma)))
     /* Out of bounds.  Use EIO because GDB uses it.  */
     return EIO;
   memcpy (myaddr, info->buffer + octets, length);