gdb: fix vfork with multiple threads

[deliverable/binutils-gdb.git] / opcodes / tic30-dis.c

diff --git a/opcodes/tic30-dis.c b/opcodes/tic30-dis.c
index 38e885cc445154e1929b58cc38adb4db75b40e79..a78a0dad218c61d269b9cb9a57c49b1460f9f080 100644 (file)
--- a/opcodes/tic30-dis.c
+++ b/opcodes/tic30-dis.c
@@ -1,5 +1,5 @@
 /* Disassembly routines for TMS320C30 architecture
-   Copyright (C) 1998-2020 Free Software Foundation, Inc.
+   Copyright (C) 1998-2021 Free Software Foundation, Inc.
    Contributed by Steven Haworth (steve@pm.cse.rmit.edu.au)
 
    This file is part of the GNU opcodes library.
@@ -201,7 +201,7 @@ get_register_operand (unsigned char fragment, char *buffer)
     {
       if ((fragment & 0x1F) == current_reg->opcode)
        {
-         strncpy (buffer, current_reg->name, OPERAND_BUFFER_LEN);
+         strncpy (buffer, current_reg->name, OPERAND_BUFFER_LEN - 1);
          buffer[OPERAND_BUFFER_LEN - 1] = 0;
          return 1;
        }
@@ -695,6 +695,9 @@ print_insn_tic30 (bfd_vma pc, disassemble_info *info)
   struct instruction insn = { 0, NULL, NULL };
   bfd_vma bufaddr = pc - info->buffer_vma;
 
+  if (bufaddr + 3 >= info->buffer_length)
+    return -1;
+
   /* Obtain the current instruction word from the buffer.  */
   insn_word = (((unsigned) *(info->buffer + bufaddr) << 24)
               | (*(info->buffer + bufaddr + 1) << 16)