* top.h (lim_at_start): Declare.

[deliverable/binutils-gdb.git] / gdb / event-top.c

diff --git a/gdb/event-top.c b/gdb/event-top.c
index ceef7b9c9ebed9166000fec85c00edb5eb866ad1..5ab324df758839b04c34b8f5284f51d22d2ac172 100644 (file)
--- a/gdb/event-top.c
+++ b/gdb/event-top.c
@@ -492,10 +492,8 @@ command_handler (char *command)
   if (display_space)
     {
 #ifdef HAVE_SBRK
-      extern char **environ;
       char *lim = (char *) sbrk (0);
-
-      space_at_cmd_start = (long) (lim - (char *) &environ);
+      space_at_cmd_start = lim - lim_at_start;
 #endif
     }
 
@@ -538,9 +536,8 @@ command_handler (char *command)
       if (display_space)
        {
 #ifdef HAVE_SBRK
-         extern char **environ;
          char *lim = (char *) sbrk (0);
-         long space_now = lim - (char *) &environ;
+         long space_now = lim - lim_at_start;
          long space_diff = space_now - space_at_cmd_start;
 
          printf_unfiltered ("Space used: %ld (%c%ld for this command)\n",
@@ -577,9 +574,8 @@ command_line_handler_continuation (struct continuation_arg *arg)
   if (display_space)
     {
 #ifdef HAVE_SBRK
-      extern char **environ;
       char *lim = (char *) sbrk (0);
-      long space_now = lim - (char *) &environ;
+      long space_now = lim - lim_at_start;
       long space_diff = space_now - space_at_cmd_start;
 
       printf_unfiltered ("Space used: %ld (%c%ld for this command)\n",