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-rw-r--r--gdb/top.c6
1 files changed, 6 insertions, 0 deletions
diff --git a/gdb/top.c b/gdb/top.c
index cb27060..088bcd9 100644
--- a/gdb/top.c
+++ b/gdb/top.c
@@ -1229,7 +1229,9 @@ command_loop ()
char *command;
int stdin_is_tty = ISATTY (stdin);
long time_at_cmd_start;
+#ifdef HAVE_SBRK
long space_at_cmd_start;
+#endif
extern int display_time;
extern int display_space;
@@ -1251,10 +1253,12 @@ command_loop ()
if (display_space)
{
+#ifdef HAVE_SBRK
extern char **environ;
char *lim = (char *) sbrk (0);
space_at_cmd_start = (long) (lim - (char *) &environ);
+#endif
}
execute_command (command, instream == stdin);
@@ -1272,6 +1276,7 @@ command_loop ()
if (display_space)
{
+#ifdef HAVE_SBRK
extern char **environ;
char *lim = (char *) sbrk (0);
long space_now = lim - (char *) &environ;
@@ -1281,6 +1286,7 @@ command_loop ()
space_now,
(space_diff >= 0 ? '+' : '-'),
space_diff);
+#endif
}
}
}