Add per-unit obstack

[deliverable/binutils-gdb.git] / gdb / go32-nat.c

diff --git a/gdb/go32-nat.c b/gdb/go32-nat.c
index 81fcfe2c2acbfe6844b3e4c053be07fd219612dc..b3ebd6cf22956c3ff7df27194a441d3edb643ed8 100644 (file)
--- a/gdb/go32-nat.c
+++ b/gdb/go32-nat.c
@@ -1,5 +1,5 @@
 /* Native debugging support for Intel x86 running DJGPP.
-   Copyright (C) 1997-2019 Free Software Foundation, Inc.
+   Copyright (C) 1997-2020 Free Software Foundation, Inc.
    Written by Robert Hoehne.
 
    This file is part of GDB.
@@ -507,7 +507,8 @@ go32_nat_target::wait (ptid_t ptid, struct target_waitstatus *status,
     }
 
   getcwd (child_cwd, sizeof (child_cwd)); /* in case it has changed */
-  chdir (current_directory);
+  if (current_directory != NULL)
+    chdir (current_directory);
 
   if (a_tss.tss_irqn == 0x21)
     {
@@ -1877,13 +1878,13 @@ get_cr3 (void)
   cr3 = _farnspeekl (taskbase + 0x1c) & ~0xfff;
   if (cr3 > 0xfffff)
     {
-#if 0  /* Not fullly supported yet.  */
+#if 0  /* Not fully supported yet.  */
       /* The Page Directory is in UMBs.  In that case, CWSDPMI puts
         the first Page Table right below the Page Directory.  Thus,
         the first Page Table's entry for its own address and the Page
         Directory entry for that Page Table will hold the same
         physical address.  The loop below searches the entire UMB
-        range of addresses for such an occurence.  */
+        range of addresses for such an occurrence.  */
       unsigned long addr, pte_idx;
 
       for (addr = 0xb0000, pte_idx = 0xb0;
@@ -2080,8 +2081,9 @@ go32_info_dos_command (const char *args, int from_tty)
   help_list (info_dos_cmdlist, "info dos ", class_info, gdb_stdout);
 }
 
+void _initialize_go32_nat ();
 void
-_initialize_go32_nat (void)
+_initialize_go32_nat ()
 {
   x86_dr_low.set_control = go32_set_dr7;
   x86_dr_low.set_addr = go32_set_dr;