tui: don't overwrite a secondary prompt that was given no input

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

diff --git a/gdb/top.c b/gdb/top.c
index 061b52fbaafcefa0e98014e82e72a5c586d8e0d0..cb3c7618c41bf47015e9ea0778491b415b42b9e5 100644 (file)
--- a/gdb/top.c
+++ b/gdb/top.c
@@ -754,6 +754,21 @@ static char *gdb_readline_wrapper_result;
    return.  */
 static void (*saved_after_char_processing_hook) (void);
 
+
+/* The number of nested readline secondary prompts that are currently
+   active.  */
+
+static int gdb_secondary_prompt_depth = 0;
+
+/* See top.h.  */
+
+int
+gdb_in_secondary_prompt_p (void)
+{
+  return gdb_secondary_prompt_depth > 0;
+}
+
+
 /* This function is called when readline has seen a complete line of
    text.  */
 
@@ -808,6 +823,8 @@ gdb_readline_wrapper_cleanup (void *arg)
 
   gdb_readline_wrapper_result = NULL;
   gdb_readline_wrapper_done = 0;
+  gdb_secondary_prompt_depth--;
+  gdb_assert (gdb_secondary_prompt_depth >= 0);
 
   after_char_processing_hook = saved_after_char_processing_hook;
   saved_after_char_processing_hook = NULL;
@@ -833,6 +850,7 @@ gdb_readline_wrapper (const char *prompt)
 
   cleanup->target_is_async_orig = target_is_async_p ();
 
+  gdb_secondary_prompt_depth++;
   back_to = make_cleanup (gdb_readline_wrapper_cleanup, cleanup);
 
   if (cleanup->target_is_async_orig)